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Luis Roche-Seruendo
Campus Universitario, Universidad San Jorge, Villanueva de Gállego, 50830 Zaragoza, Spain

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Journal article
Published: 10 August 2021 in International Journal of Environmental Research and Public Health
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Background: The lower limb behaves like a spring compressing and decompressing during running, where lower-limb stiffness is one of the most influential factors. This prospective observational study is aimed at examining the relationship between the connective tissue morphology and lower-limb stiffness and investigating whether the barefoot/shod condition influences on such relationship. Methods: 14 male amateur runners (10-km time trial <50′) were included. Data were recorded over one session, where participants ran 2 trials (i.e., barefoot and shod conditions) of 3 minutes at 12 km/h, where running spatiotemporal parameters and vertical (Kvert) and leg stiffness (Kleg) were obtained. Prior to testing trials, thickness and cross-sectional area (CSA) were recorded for Achilles (AT) and patellar tendons (PT) and plantar fascia (PF) with ultrasound. Results: Under barefoot condition, a positive correlation was found between Kleg and AT-thickness and CSA and PF-thickness; and between Kvert and AT-thickness and PF thickness. Under shod condition, a positive correlation was found between Kleg and PT-CSA and PT-thickness, and between Kvert and PT-CSA and PT-thickness. Conclusions: The results reveal a specificity of the relationship between the lower-limb stiffness and the morphology of the connective tissue. Greater tendon shows higher lower-limb stiffness when that tendon is specially demanded by the function.

ACS Style

Alberto Rubio-Peirotén; Felipe García-Pinillos; Diego Jaén-Carrillo; Antonio Cartón-Llorente; Ferrán Abat; Luis Roche-Seruendo. Relationship between Connective Tissue Morphology and Lower-Limb Stiffness in Endurance Runners. A Prospective Study. International Journal of Environmental Research and Public Health 2021, 18, 8453 .

AMA Style

Alberto Rubio-Peirotén, Felipe García-Pinillos, Diego Jaén-Carrillo, Antonio Cartón-Llorente, Ferrán Abat, Luis Roche-Seruendo. Relationship between Connective Tissue Morphology and Lower-Limb Stiffness in Endurance Runners. A Prospective Study. International Journal of Environmental Research and Public Health. 2021; 18 (16):8453.

Chicago/Turabian Style

Alberto Rubio-Peirotén; Felipe García-Pinillos; Diego Jaén-Carrillo; Antonio Cartón-Llorente; Ferrán Abat; Luis Roche-Seruendo. 2021. "Relationship between Connective Tissue Morphology and Lower-Limb Stiffness in Endurance Runners. A Prospective Study." International Journal of Environmental Research and Public Health 18, no. 16: 8453.

Journal article
Published: 26 June 2021 in International Journal of Environmental Research and Public Health
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Background: Musculotendinous reactive strength is a key factor for the utilization of elastic energy in sporting activities such as running. AIM: To evaluate the relationship between musculotendinous reactive strength and lower-limb stiffness during running as well as to identify age-related differences in both variables. Methods: Fifty-nine amateur endurance runners performed three 20-cm drop jumps and a constant 3-min easy run on a motorized treadmill. Reactive strength index and dynamic lower-limb stiffness were calculated with a photoelectric cell system by jumping and running, respectively. Additionally, sit to stand difference in plantar arch height was assessed as a static lower-limb stiffness measure. The cluster analysis allows the comparison between younger and older runners. Results: No significant correlations were found between jumping reactive strength and running lower-limb stiffness. The younger group performed better at drop jumps (p = 0.023, ES = 0.82), whereas higher-but-no-significant results were found for reactive strength index and stiffness-related metrics. Conclusions: Musculotendinous vertical reactiveness may not be transferred to combined vertical and horizontal movements such as running.

ACS Style

Diego Jaén-Carrillo; Antonio Cartón-Llorente; Demetrio Lozano-Jarque; Alberto Rubio-Peirotén; Luis Roche-Seruendo; Felipe García-Pinillos. Relationship between Reactive Strength and Leg Stiffness at Submaximal Velocity: Effects of Age on Distance Runners. International Journal of Environmental Research and Public Health 2021, 18, 6866 .

AMA Style

Diego Jaén-Carrillo, Antonio Cartón-Llorente, Demetrio Lozano-Jarque, Alberto Rubio-Peirotén, Luis Roche-Seruendo, Felipe García-Pinillos. Relationship between Reactive Strength and Leg Stiffness at Submaximal Velocity: Effects of Age on Distance Runners. International Journal of Environmental Research and Public Health. 2021; 18 (13):6866.

Chicago/Turabian Style

Diego Jaén-Carrillo; Antonio Cartón-Llorente; Demetrio Lozano-Jarque; Alberto Rubio-Peirotén; Luis Roche-Seruendo; Felipe García-Pinillos. 2021. "Relationship between Reactive Strength and Leg Stiffness at Submaximal Velocity: Effects of Age on Distance Runners." International Journal of Environmental Research and Public Health 18, no. 13: 6866.

Journal article
Published: 02 March 2021 in International Journal of Environmental Research and Public Health
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This study aimed to determine the influence of arch stiffness on running spatiotemporal parameters at a common speed for a wide range of endurance runners (i.e., 12 km·h−1). In total, 97 runners, 52 men and 45 women, completed a treadmill running protocol at 12 km·h−1. Spatiotemporal parameters were measured using the OptoGait system, and foot structure was assessed by determining arch stiffness. Since between-sex differences were found in anthropometric and foot structure variables, data analysis was conducted separately for men and women, and body mass and height were considered as covariates. For both sexes, a k-means cluster analysis grouped participants according to arch stiffness, by obtaining a group of low-arch stiffness (LAS group) and a group of high-arch stiffness (HAS group), with significant differences in arch stiffness (p < 0.001, for both men and women). No significant differences between LAS and HAS groups were found in running spatiotemporal parameters, regardless of sex (p ≥ 0.05). For both sexes, the partial correlation analysis reported no significant correlations (p ≥ 0.05) between foot structure variables and running spatiotemporal parameters. The results obtained show no differences in spatiotemporal gait characteristics during running at submaximal velocity between runners with low-arch stiffness and those with high-arch stiffness, regardless of sex. These findings may have important implications for clinicians and coaches by adding more evidence to the debate about the use of static foot classification measures when characterizing the foot and its biomechanics during running.

ACS Style

Felipe García-Pinillos; Diego Jaén-Carrillo; Pedro Latorre-Román; Carles Escalona-Marfil; Víctor Soto-Hermoso; Carlos Lago-Fuentes; Silvia Pueyo-Villa; Irma Domínguez-Azpíroz; Luis Roche-Seruendo. Does Arch Stiffness Influence Running Spatiotemporal Parameters? An Analysis of the Relationship between Influencing Factors on Running Performance. International Journal of Environmental Research and Public Health 2021, 18, 2437 .

AMA Style

Felipe García-Pinillos, Diego Jaén-Carrillo, Pedro Latorre-Román, Carles Escalona-Marfil, Víctor Soto-Hermoso, Carlos Lago-Fuentes, Silvia Pueyo-Villa, Irma Domínguez-Azpíroz, Luis Roche-Seruendo. Does Arch Stiffness Influence Running Spatiotemporal Parameters? An Analysis of the Relationship between Influencing Factors on Running Performance. International Journal of Environmental Research and Public Health. 2021; 18 (5):2437.

Chicago/Turabian Style

Felipe García-Pinillos; Diego Jaén-Carrillo; Pedro Latorre-Román; Carles Escalona-Marfil; Víctor Soto-Hermoso; Carlos Lago-Fuentes; Silvia Pueyo-Villa; Irma Domínguez-Azpíroz; Luis Roche-Seruendo. 2021. "Does Arch Stiffness Influence Running Spatiotemporal Parameters? An Analysis of the Relationship between Influencing Factors on Running Performance." International Journal of Environmental Research and Public Health 18, no. 5: 2437.

Journal article
Published: 18 February 2021 in International Journal of Environmental Research and Public Health
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The influence of the morphologic characteristics of connective tissue, which plays an essential role during sports activities, on sporting tasks needs further research given the controversial findings reported in the literature. This study aimed at examining the relationship between lower limb connective tissue morphology and drop jump reactivity and determining the influence of sex and athletic performance level. A total of 30 men and 14 women, runners, executed 6 drop jumps (3 × 20 cm and 30 cm height respectively) and their thickness and cross-sectional area were recorded for Achilles and patellar tendons and plantar fascia. No significant results were found in the relationship between the morphology of the connective tissue and reactivity strength index for both sexes. Significant sex differences were found, while women showed greater values (p < 0.005) for Achilles tendon and plantar fascia; men showed greater values for reactivity strength index and drop jump performance (p < 0.001). The present study shows a limited relationship between connective tissue morphology and drop jump reactivity. Additionally, women showed greater normalized values for Achilles tendon and plantar fascia, and men showed greater reactivity strength index and jumping performance values. No relationships between athletic performance level and connective tissue were found.

ACS Style

Alberto Rubio-Peirotén; Felipe García-Pinillos; Diego Jaén-Carrillo; Antonio Cartón-Llorente; Luis Roche-Seruendo. Is There A Relationship between the Morphology of Connective Tissue and Reactivity during A Drop Jump? Influence of Sex and Athletic Performance Level. International Journal of Environmental Research and Public Health 2021, 18, 1969 .

AMA Style

Alberto Rubio-Peirotén, Felipe García-Pinillos, Diego Jaén-Carrillo, Antonio Cartón-Llorente, Luis Roche-Seruendo. Is There A Relationship between the Morphology of Connective Tissue and Reactivity during A Drop Jump? Influence of Sex and Athletic Performance Level. International Journal of Environmental Research and Public Health. 2021; 18 (4):1969.

Chicago/Turabian Style

Alberto Rubio-Peirotén; Felipe García-Pinillos; Diego Jaén-Carrillo; Antonio Cartón-Llorente; Luis Roche-Seruendo. 2021. "Is There A Relationship between the Morphology of Connective Tissue and Reactivity during A Drop Jump? Influence of Sex and Athletic Performance Level." International Journal of Environmental Research and Public Health 18, no. 4: 1969.

Journal article
Published: 15 January 2021 in Sensors
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Wearable technology has allowed for the real-time assessment of mechanical work employed in several sporting activities. Through novel power metrics, Functional Threshold Power have shown a reliable indicator of training intensities. This study aims to determine the relationship between mean power output (MPO) values obtained during three submaximal running time trials (i.e., 10 min, 20 min, and 30 min) and the functional threshold power (FTP). Twenty-two recreationally trained male endurance runners completed four submaximal running time trials of 10, 20, 30, and 60 min, trying to cover the longest possible distance on a motorized treadmill. Absolute MPO (W), normalized MPO (W/kg) and standard deviation (SD) were calculated for each time trial with a power meter device attached to the shoelaces. All simplified FTP trials analyzed (i.e., FTP10, FTP20, and FTP30) showed a significant association with the calculated FTP (p < 0.001) for both MPO and normalized MPO, whereas stronger correlations were found with longer time trials. Individual correction factors (ICF% = FTP60/FTPn) of ~90% for FTP10, ~94% for FTP20, and ~96% for FTP30 were obtained. The present study procures important practical applications for coaches and athletes as it provides a more accurate estimation of FTP in endurance running through less fatiguing, reproducible tests.

ACS Style

Antonio Cartón-Llorente; Felipe García-Pinillos; Jorge Royo-Borruel; Alberto Rubio-Peirotén; Diego Jaén-Carrillo; Luis Roche-Seruendo. Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor. Sensors 2021, 21, 582 .

AMA Style

Antonio Cartón-Llorente, Felipe García-Pinillos, Jorge Royo-Borruel, Alberto Rubio-Peirotén, Diego Jaén-Carrillo, Luis Roche-Seruendo. Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor. Sensors. 2021; 21 (2):582.

Chicago/Turabian Style

Antonio Cartón-Llorente; Felipe García-Pinillos; Jorge Royo-Borruel; Alberto Rubio-Peirotén; Diego Jaén-Carrillo; Luis Roche-Seruendo. 2021. "Estimating Functional Threshold Power in Endurance Running from Shorter Time Trials Using a 6-Axis Inertial Measurement Sensor." Sensors 21, no. 2: 582.

Journal article
Published: 01 January 2021 in Journal of Strength and Conditioning Research
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García-Pinillos, F, Roche-Seruendo, LE, Marcen-Cinca, N, Marco-Contreras, LA, and Latorre-Román, PA. Absolute reliability and concurrent validity of the Stryd system for the assessment of running stride kinematics at different velocities. J Strength Cond Res 35(1): 78–84, 2021—This study aimed to determine the absolute reliability and to evaluate the concurrent validity of the Stryd system for measuring spatiotemporal variables during running at different velocities (8–20 km·h−1) by comparing data with another widely used device (the OptoGait system). Eighteen trained male endurance runners performed an incremental running test (8–20 km·h−1 with 3-minute stages) on a treadmill. Spatiotemporal parameters (contact time [CT], flight time [FT], step length [SL], and step frequency [SF]) were measured using 2 different devices (Stryd and OptoGait systems). The Stryd system showed a coefficient of variation (CV) <3%, except for FT (3.7–11.6%). The OptoGait achieved CV <4%, except for FT (6.0–30.6%). Pearson correlation analysis showed large correlations for CT and FT, and almost perfect for SL and SF over the entire protocol. The intraclass correlation coefficients partially support those results. Paired t-tests showed that CT was underestimated (p < 0.05, effect size [ES] > 0.7; ∼4–8%), FT overestimated (p < 0.05, ES > 0.7; ∼7–65%), whereas SL and SF were very similar between systems (ES < 0.1, with differences <1%). The Stryd is a practical portable device that is reliable for measuring CT, FT, SL, and SF during running. It provides accurate SL and SF measures but underestimates CT (0.5–8%) and overestimates FT (3–67%) compared with a photocell-based system.

ACS Style

Felipe García-Pinillos; Luis E. Roche-Seruendo; Noel Marcén-Cinca; Luis A. Marco-Contreras; Pedro A. Latorre-Román. Absolute Reliability and Concurrent Validity of the Stryd System for the Assessment of Running Stride Kinematics at Different Velocities. Journal of Strength and Conditioning Research 2021, 35, 78 -84.

AMA Style

Felipe García-Pinillos, Luis E. Roche-Seruendo, Noel Marcén-Cinca, Luis A. Marco-Contreras, Pedro A. Latorre-Román. Absolute Reliability and Concurrent Validity of the Stryd System for the Assessment of Running Stride Kinematics at Different Velocities. Journal of Strength and Conditioning Research. 2021; 35 (1):78-84.

Chicago/Turabian Style

Felipe García-Pinillos; Luis E. Roche-Seruendo; Noel Marcén-Cinca; Luis A. Marco-Contreras; Pedro A. Latorre-Román. 2021. "Absolute Reliability and Concurrent Validity of the Stryd System for the Assessment of Running Stride Kinematics at Different Velocities." Journal of Strength and Conditioning Research 35, no. 1: 78-84.

Review
Published: 13 November 2020 in Sensors
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Mechanical power may act as a key indicator for physiological and mechanical changes during running. In this scoping review, we examine the current evidences about the use of power output (PW) during endurance running and the different commercially available wearable sensors to assess PW. The Boolean phrases endurance OR submaximal NOT sprint AND running OR runner AND power OR power meter, were searched in PubMed, MEDLINE, and SCOPUS. Nineteen studies were finally selected for analysis. The current evidence about critical power and both power-time and power-duration relationships in running allow to provide coaches and practitioners a new promising setting for PW quantification with the use of wearable sensors. Some studies have assessed the validity and reliability of different available wearables for both kinematics parameters and PW when running but running power meters need further research before a definitive conclusion regarding its validity and reliability.

ACS Style

Diego Jaén-Carrillo; Luis Roche-Seruendo; Antonio Cartón-Llorente; Rodrigo Ramírez-Campillo; Felipe García-Pinillos. Mechanical Power in Endurance Running: A Scoping Review on Sensors for Power Output Estimation during Running. Sensors 2020, 20, 6482 .

AMA Style

Diego Jaén-Carrillo, Luis Roche-Seruendo, Antonio Cartón-Llorente, Rodrigo Ramírez-Campillo, Felipe García-Pinillos. Mechanical Power in Endurance Running: A Scoping Review on Sensors for Power Output Estimation during Running. Sensors. 2020; 20 (22):6482.

Chicago/Turabian Style

Diego Jaén-Carrillo; Luis Roche-Seruendo; Antonio Cartón-Llorente; Rodrigo Ramírez-Campillo; Felipe García-Pinillos. 2020. "Mechanical Power in Endurance Running: A Scoping Review on Sensors for Power Output Estimation during Running." Sensors 20, no. 22: 6482.

Journal article
Published: 05 November 2020 in International Journal of Environmental Research and Public Health
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This study determined the strength training (ST) habits of amateur endurance runners in Spain regarding athletic level. A sixteen-item online questionnaire comprised of (i) demographic information, (ii) performance, and (iii) training contents was completed by 1179 athletes. Five group levels were determined according to the personal best times of the athletes in a 10-km trial (LG1: level group 1, 50–55 min; LG2: level group 2, 45–50 min; LG3: level group 3, 40–45 min; LG4: level group 4, 35–40 min; LG5: level group 5, 30–35 min). Most athletes (n = 735, 62.3%) perceived ST as being a key component in their training program. Resistance training (RT) was reported as a ST type used by 63.4% of the athletes, 66.9% reported using bodyweight exercises, 46.8% reported using plyometric training, 65.6% reported using uphill runs, and 17.8% reported using resisted runs. The prevalence of runners who excluded ST from their training programs decreased as the athletic performance level increased (18.2% in lower-level athletes vs. 3.0% in higher-level), while the inclusion of RT, bodyweight exercises, plyometric training, and uphill and resisted runs was more frequent within higher-level groups. Most athletes included ST using low-to-moderate loads and high a number of repetitions/sets comprised of RT, plyometric training, resisted runs, and core, respiratory, and foot muscles training.

ACS Style

Felipe García-Pinillos; Carlos Lago-Fuentes; Diego Jaén-Carrillo; Pascual Bujalance-Moreno; Pedro Ángel Latorre-Román; Luis Enrique Roche-Seruendo; Rodrigo Ramirez-Campillo. Strength Training Habits in Amateur Endurance Runners in Spain: Influence of Athletic Level. International Journal of Environmental Research and Public Health 2020, 17, 8184 .

AMA Style

Felipe García-Pinillos, Carlos Lago-Fuentes, Diego Jaén-Carrillo, Pascual Bujalance-Moreno, Pedro Ángel Latorre-Román, Luis Enrique Roche-Seruendo, Rodrigo Ramirez-Campillo. Strength Training Habits in Amateur Endurance Runners in Spain: Influence of Athletic Level. International Journal of Environmental Research and Public Health. 2020; 17 (21):8184.

Chicago/Turabian Style

Felipe García-Pinillos; Carlos Lago-Fuentes; Diego Jaén-Carrillo; Pascual Bujalance-Moreno; Pedro Ángel Latorre-Román; Luis Enrique Roche-Seruendo; Rodrigo Ramirez-Campillo. 2020. "Strength Training Habits in Amateur Endurance Runners in Spain: Influence of Athletic Level." International Journal of Environmental Research and Public Health 17, no. 21: 8184.

Journal article
Published: 23 October 2020 in JMIR mHealth and uHealth
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Background Markerless systems to capture body motion require no markers to be attached to the body, thereby improving clinical feasibility and testing time. However, the lack of markers might affect the accuracy of measurements. Objective This study aimed to determine the absolute reliability and concurrent validity of the Kinect system with MotionMetrix software for spatiotemporal variables during running at a comfortable velocity, by comparing data between the combination system and two widely used systems—OptoGait and high-speed video analysis at 1000 Hz. Methods In total, 25 runners followed a running protocol on a treadmill at a speed of 12 km/h. The Kinect+MotionMetrix combination measured spatiotemporal parameters during running (ie, contact time, flight time, step frequency, and step length), which were compared to those obtained from two reference systems. Results Regardless of the system, flight time had the highest coefficients of variation (OptoGait: 16.4%; video analysis: 17.3%; Kinect+MotionMetrix: 23.2%). The rest of the coefficients of variation reported were lower than 8.1%. Correlation analysis showed very high correlations (r>0.8; P<.001) and almost perfect associations (intraclass correlation coefficient>0.81) between systems for all the spatiotemporal parameters except contact time, which had lower values. Bland-Altman plots revealed smaller systematic biases and random errors for step frequency and step length and larger systematic biases and random errors for temporal parameters with the Kinect+MotionMetrix system as compared to OptoGait (difference: contact time +3.0%, flight time −7.9%) and high-speed video analysis at 1000 Hz (difference: contact time +4.2%, flight time −11.3%). Accordingly, heteroscedasticity was found between systems for temporal parameters (r2>0.1). Conclusions The results indicate that the Kinect+MotionMetrix combination slightly overestimates contact time and strongly underestimates flight time as compared to the OptoGait system and high-speed video analysis at 1000 Hz. However, it is a valid tool for measuring step frequency and step length when compared to reference systems. Future studies should determine the reliability of this system for determining temporal parameters.

ACS Style

Felipe García-Pinillos; Diego Jaén-Carrillo; Victor Soto Hermoso; Pedro Latorre Román; Pedro Delgado; Cristian Martinez; Antonio Carton; Luis Roche Seruendo. Agreement Between Spatiotemporal Gait Parameters Measured by a Markerless Motion Capture System and Two Reference Systems—a Treadmill-Based Photoelectric Cell and High-Speed Video Analyses: Comparative Study. JMIR mHealth and uHealth 2020, 8, e19498 .

AMA Style

Felipe García-Pinillos, Diego Jaén-Carrillo, Victor Soto Hermoso, Pedro Latorre Román, Pedro Delgado, Cristian Martinez, Antonio Carton, Luis Roche Seruendo. Agreement Between Spatiotemporal Gait Parameters Measured by a Markerless Motion Capture System and Two Reference Systems—a Treadmill-Based Photoelectric Cell and High-Speed Video Analyses: Comparative Study. JMIR mHealth and uHealth. 2020; 8 (10):e19498.

Chicago/Turabian Style

Felipe García-Pinillos; Diego Jaén-Carrillo; Victor Soto Hermoso; Pedro Latorre Román; Pedro Delgado; Cristian Martinez; Antonio Carton; Luis Roche Seruendo. 2020. "Agreement Between Spatiotemporal Gait Parameters Measured by a Markerless Motion Capture System and Two Reference Systems—a Treadmill-Based Photoelectric Cell and High-Speed Video Analyses: Comparative Study." JMIR mHealth and uHealth 8, no. 10: e19498.

Journal article
Published: 10 October 2020 in International Journal of Environmental Research and Public Health
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Background: Low back pain (LBP) is a common recurrent pathology among assembly chain workers. This population tends to spend most of the workday in a static standing posture and handling loads, with balance being essential for correct job performance. LBP is related to poorer postural control, so balance could be affected in this condition. Methods: The purpose of the present study is to analyze the deterioration of static balance generated by work activity in a prolonged standing position. We assess sway with a pressure platform at three moments of the workday (before, during, and after work), comparing the different balance parameters in 22 manufacturing plant workers with (17) and without (5) LBP. Results: In the pre-work capture, an independent t-test showed no significant differences between the pain and non-pain groups’ static balance parameters. Between the pre- and mid-workday captures, a two-way ANOVA with repeated measures showed a significant decrease in the medial-lateral center of pressure displacement with open eyes in workers with LBP. Conclusions: workers with low back pain do not show a greater deterioration in static balance than workers without pain during the workday.

ACS Style

Ana Vanessa Bataller-Cervero; Cristina Cimarras-Otal; Luis Enrique Roche-Seruendo; Andrés Alcázar-Crevillén; José Antonio Villalba-Ruete; César Berzosa. Static Balance Modification during the Workday in Assembly Chain Workers with and without Current Low Back Pain. International Journal of Environmental Research and Public Health 2020, 17, 7385 .

AMA Style

Ana Vanessa Bataller-Cervero, Cristina Cimarras-Otal, Luis Enrique Roche-Seruendo, Andrés Alcázar-Crevillén, José Antonio Villalba-Ruete, César Berzosa. Static Balance Modification during the Workday in Assembly Chain Workers with and without Current Low Back Pain. International Journal of Environmental Research and Public Health. 2020; 17 (20):7385.

Chicago/Turabian Style

Ana Vanessa Bataller-Cervero; Cristina Cimarras-Otal; Luis Enrique Roche-Seruendo; Andrés Alcázar-Crevillén; José Antonio Villalba-Ruete; César Berzosa. 2020. "Static Balance Modification during the Workday in Assembly Chain Workers with and without Current Low Back Pain." International Journal of Environmental Research and Public Health 17, no. 20: 7385.

Journal article
Published: 28 September 2020 in International Journal of Environmental Research and Public Health
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Background: The study of children with unilateral cerebral palsy (UCP) has traditionally focused on motor aspects. The extent to which sensory processing disorders can affect their functional performance and quality of life (QoL) is uncertain. This study aimed to explore the differences in sensory processing between UCP and typical development (TD) children and to analyze the relationship of sensory processing with functional performance and QoL. Methods: Fifty-three children aged from 6 to 15 years (TD = 24; UCP = 26) were recruited. The Child Sensory Profile 2, Pediatric Evaluation of Disability Inventory—Computer Adaptive Test and Kidscreen were used to evaluate sensory processing, functional performance and QoL. Results: UCP children showed sensory processing difficulties (avoidance: p = 0.02; registration: p = 0.00; body position: p = 0.00; oral: p = 0.02; social-emotional: p = 0.01), and scored lower in functional performance (daily activities: p = 0.00; mobility: p = 0.00; social/cognitive: p = 0.04) and in physical well-being (p = 0.00). The highest correlations in UCP group were found between proprioceptive processing and daily activities and mobility (r = −0.39); auditory, visual and tactile information and school environment (r = −0.63; r = −0.51; r = −0.46); behavioral and social-emotional responses and psychological well-being (r = −0.64; r = −0.49). Conclusions: UCP children have greater difficulty in sensory processing than TD children. Difficulties in proprioceptive processing contribute to poorer functional performance. Auditory, visual and tactile processing is associated with participation in the school environment and behavioral and social-emotional responses related to sensory processing are associated with the psychological well-being.

ACS Style

Patricia Jovellar-Isiegas; Inés Resa Collados; Diego Jaén-Carrillo; Luis Enrique Roche-Seruendo; César Cuesta García. Sensory Processing, Functional Performance and Quality of Life in Unilateral Cerebral Palsy Children: A Cross-Sectional Study. International Journal of Environmental Research and Public Health 2020, 17, 7116 .

AMA Style

Patricia Jovellar-Isiegas, Inés Resa Collados, Diego Jaén-Carrillo, Luis Enrique Roche-Seruendo, César Cuesta García. Sensory Processing, Functional Performance and Quality of Life in Unilateral Cerebral Palsy Children: A Cross-Sectional Study. International Journal of Environmental Research and Public Health. 2020; 17 (19):7116.

Chicago/Turabian Style

Patricia Jovellar-Isiegas; Inés Resa Collados; Diego Jaén-Carrillo; Luis Enrique Roche-Seruendo; César Cuesta García. 2020. "Sensory Processing, Functional Performance and Quality of Life in Unilateral Cerebral Palsy Children: A Cross-Sectional Study." International Journal of Environmental Research and Public Health 17, no. 19: 7116.

Preprint content
Published: 20 April 2020
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BACKGROUND Markerless systems to capture body motion require no markers to be attached to the body, thereby improving clinical feasibility and testing time. However, the lack of markers might affect the accuracy of measurements. OBJECTIVE This study aimed to determine the absolute reliability and concurrent validity of the Kinect system with MotionMetrix software for spatiotemporal variables during running at a comfortable velocity, by comparing data between the combination system and two widely used systems—OptoGait and high-speed video analysis at 1000 Hz. METHODS In total, 25 runners followed a running protocol on a treadmill at a speed of 12 km/h. The Kinect+MotionMetrix combination measured spatiotemporal parameters during running (ie, contact time, flight time, step frequency, and step length), which were compared to those obtained from two reference systems. RESULTS Regardless of the system, flight time had the highest coefficients of variation (OptoGait: 16.4%; video analysis: 17.3%; Kinect+MotionMetrix: 23.2%). The rest of the coefficients of variation reported were lower than 8.1%. Correlation analysis showed very high correlations (r>0.8; P<.001) and almost perfect associations (intraclass correlation coefficient>0.81) between systems for all the spatiotemporal parameters except contact time, which had lower values. Bland-Altman plots revealed smaller systematic biases and random errors for step frequency and step length and larger systematic biases and random errors for temporal parameters with the Kinect+MotionMetrix system as compared to OptoGait (difference: contact time +3.0%, flight time −7.9%) and high-speed video analysis at 1000 Hz (difference: contact time +4.2%, flight time −11.3%). Accordingly, heteroscedasticity was found between systems for temporal parameters (r2>0.1). CONCLUSIONS The results indicate that the Kinect+MotionMetrix combination slightly overestimates contact time and strongly underestimates flight time as compared to the OptoGait system and high-speed video analysis at 1000 Hz. However, it is a valid tool for measuring step frequency and step length when compared to reference systems. Future studies should determine the reliability of this system for determining temporal parameters.

ACS Style

Felipe García-Pinillos; Diego Jaén-Carrillo; Victor Soto Hermoso; Pedro Latorre Román; Pedro Delgado; Cristian Martinez; Antonio Carton; Luis Roche Seruendo. Agreement Between Spatiotemporal Gait Parameters Measured by a Markerless Motion Capture System and Two Reference Systems—a Treadmill-Based Photoelectric Cell and High-Speed Video Analyses: Comparative Study (Preprint). 2020, 1 .

AMA Style

Felipe García-Pinillos, Diego Jaén-Carrillo, Victor Soto Hermoso, Pedro Latorre Román, Pedro Delgado, Cristian Martinez, Antonio Carton, Luis Roche Seruendo. Agreement Between Spatiotemporal Gait Parameters Measured by a Markerless Motion Capture System and Two Reference Systems—a Treadmill-Based Photoelectric Cell and High-Speed Video Analyses: Comparative Study (Preprint). . 2020; ():1.

Chicago/Turabian Style

Felipe García-Pinillos; Diego Jaén-Carrillo; Victor Soto Hermoso; Pedro Latorre Román; Pedro Delgado; Cristian Martinez; Antonio Carton; Luis Roche Seruendo. 2020. "Agreement Between Spatiotemporal Gait Parameters Measured by a Markerless Motion Capture System and Two Reference Systems—a Treadmill-Based Photoelectric Cell and High-Speed Video Analyses: Comparative Study (Preprint)." , no. : 1.

Journal article
Published: 24 December 2019 in Gait & Posture
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Describing the response of spatiotemporal gait characteristics, and related variables such as variability and stiffness, to different stressors is important to better understand spring-mass model. This study aimed to examine the effect of fatigue induced by a running protocol on spatiotemporal gait parameters, step variability and vertical (Kvert) and leg stiffness (Kleg) during running on a treadmill. Twenty-two trained male endurance runners performed a 60-min time trial run. An analysis of spatiotemporal parameters (contact time [CT], flight time [FT], step frequency [SF] and step length [SL]), step variability (in terms of coefficient of variation [CV]) and stiffness was conducted in two different conditions: non-fatigued (before the protocol) and fatigued (after the protocol). The pairwise comparisons (i.e., non-fatigued vs. fatigued condition) indicated that temporal parameters (i.e., CT and FT) experienced significant changes (p = 0.001 and <0.001, respectively). Step variability increased in presence of fatigue, with higher CV in CT (p = 0.039), FT (p = 0.005), SF (p = 0.046) and SL (p = 0.027) after the running protocol. The Kleg experienced a reduction in the fatigued condition (p < 0.001) whereas the Kvert remained unchanged (p = 0.602). The results indicate that fatigue induced by a 60-min time trial run causes some adaptations in spatiotemporal gait characteristics and stiffness in trained endurance runners. Specifically, in the presence of fatigue, the athletes showed greater CT and shorter FT, higher step variability and lower leg stiffness.

ACS Style

Felipe García-Pinillos; Antonio Cartón-Llorente; Diego Jaén-Carrillo; Pedro Delgado-Floody; Vanessa Carrasco-Alarcón; Cristian Martínez; Luis E. Roche-Seruendo. Does fatigue alter step characteristics and stiffness during running? Gait & Posture 2019, 76, 259 -263.

AMA Style

Felipe García-Pinillos, Antonio Cartón-Llorente, Diego Jaén-Carrillo, Pedro Delgado-Floody, Vanessa Carrasco-Alarcón, Cristian Martínez, Luis E. Roche-Seruendo. Does fatigue alter step characteristics and stiffness during running? Gait & Posture. 2019; 76 ():259-263.

Chicago/Turabian Style

Felipe García-Pinillos; Antonio Cartón-Llorente; Diego Jaén-Carrillo; Pedro Delgado-Floody; Vanessa Carrasco-Alarcón; Cristian Martínez; Luis E. Roche-Seruendo. 2019. "Does fatigue alter step characteristics and stiffness during running?" Gait & Posture 76, no. : 259-263.

Physiology
Published: 24 September 2019 in PLOS ONE
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This study aimed to evaluate the concurrent validity of two different inertial measurement units for measuring spatiotemporal parameters during running on a treadmill, by comparing data with a high-speed video analysis (VA) at 1,000 Hz. Forty-nine endurance runners performed a running protocol on a treadmill at comfortable velocity (i.e., 3.25 ± 0.36 m.s-1). Those wearable devices (i.e., Stryd™ and RunScribe™ systems) were compared to a high-speed VA, as a reference system for measuring spatiotemporal parameters (i.e. contact time [CT], flight time [FT], step frequency [SF] and step length [SL]) during running at comfortable velocity. The pairwise comparison revealed that the Stryd™ system underestimated CT (5.2%, p < 0.001) and overestimated FT (15.1%, p < 0.001) compared to the VA; whereas the RunScribe™ system underestimated CT (2.3%, p = 0.009). No significant differences were observed in SF and SL between the wearable devices and VA. The intra class correlation coefficient (ICC) revealed an almost perfect association between both systems and high-speed VA (ICC > 0.81). The Bland-Altman plots revealed heteroscedasticity of error (r2 = 0.166) for the CT from the Stryd™ system, whereas no heteroscedasticity of error (r2 < 0.1) was revealed in the rest of parameters. In conclusion, the results obtained suggest that both foot pods are valid tools for measuring spatiotemporal parameters during running on a treadmill at comfortable velocity. If the limits of agreement of both systems are considered in respect to high-speed VA, the RunScribe™ seems to be a more accurate system for measuring temporal parameters and SL than the Stryd™ system.

ACS Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Víctor M. Soto-Hermoso; Juan A. Párraga-Montilla; Antonio Pantoja-Vallejo; Rodrigo Ramírez-Campillo; Luis E. Roche-Seruendo. Agreement between the spatiotemporal gait parameters from two different wearable devices and high-speed video analysis. PLOS ONE 2019, 14, e0222872 .

AMA Style

Felipe García-Pinillos, Pedro Á. Latorre-Román, Víctor M. Soto-Hermoso, Juan A. Párraga-Montilla, Antonio Pantoja-Vallejo, Rodrigo Ramírez-Campillo, Luis E. Roche-Seruendo. Agreement between the spatiotemporal gait parameters from two different wearable devices and high-speed video analysis. PLOS ONE. 2019; 14 (9):e0222872.

Chicago/Turabian Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Víctor M. Soto-Hermoso; Juan A. Párraga-Montilla; Antonio Pantoja-Vallejo; Rodrigo Ramírez-Campillo; Luis E. Roche-Seruendo. 2019. "Agreement between the spatiotemporal gait parameters from two different wearable devices and high-speed video analysis." PLOS ONE 14, no. 9: e0222872.

Short communication
Published: 28 June 2019 in Journal of Biomechanics
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The aim of this study was to determine the level of agreement between spatiotemporal gait characteristics from a photoelectric system with different filter settings and high-speed video analysis during running on a treadmill at comfortable velocity. Forty-nine runners performed a running protocol on a treadmill at comfortable velocity. Two systems were used to determine spatiotemporal parameters (i.e. contact time [CT], flight time [FT], step frequency [SF] and step length [SL]) during running: OptoGait system and high-speed video analysis at 1,000 Hz. The collected data was re-filtered in the OptoGait software by using nine different settings (i.e. 0_0, 1_1, 2_2, 3_3, 3_4, 4_4, 4_5, 5_4 and 5_5), and compared to those obtained through video analysis. The Pearson correlation analysis revealed very large correlations (r>0.9, p0.9) for both SL and SF regardless of the filter setting. However, large variations between filter settings according to the data from video analysis were reported in CT and FT (0_0, 1_1 and 2_2 filter settings obtained an association ICC>0.9, whereas other filters obtained lower ICCs). Bland-Altman plots revealed small bias and error and no presence of heteroscedasticity of error for 1_1 setting. In conclusion, the filter setting for the OptoGait system should be considered to minimize the bias and error of spatiotemporal parameters measurement. For running on a treadmill, the 1_1 filter setting is recommended if gait parameters are to be compared to a high-speed video analysis (1,000 Hz).

ACS Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Rodrigo Ramirez-Campillo; Luis E. Roche-Seruendo. Agreement between spatiotemporal parameters from a photoelectric system with different filter settings and high-speed video analysis during running on a treadmill at comfortable velocity. Journal of Biomechanics 2019, 93, 213 -219.

AMA Style

Felipe García-Pinillos, Pedro Á. Latorre-Román, Rodrigo Ramirez-Campillo, Luis E. Roche-Seruendo. Agreement between spatiotemporal parameters from a photoelectric system with different filter settings and high-speed video analysis during running on a treadmill at comfortable velocity. Journal of Biomechanics. 2019; 93 ():213-219.

Chicago/Turabian Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Rodrigo Ramirez-Campillo; Luis E. Roche-Seruendo. 2019. "Agreement between spatiotemporal parameters from a photoelectric system with different filter settings and high-speed video analysis during running on a treadmill at comfortable velocity." Journal of Biomechanics 93, no. : 213-219.

Journal article
Published: 04 March 2019 in Isokinetics and Exercise Science
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ACS Style

Felipe García-Pinillos; Luis E. Roche-Seruendo; Amador García-Ramos; Rodrigo Ramírez-Campillo; Pedro Á. Latorre-Román. How long is required to undertake step variability analysis during running? A pilot study. Isokinetics and Exercise Science 2019, 27, 63 -67.

AMA Style

Felipe García-Pinillos, Luis E. Roche-Seruendo, Amador García-Ramos, Rodrigo Ramírez-Campillo, Pedro Á. Latorre-Román. How long is required to undertake step variability analysis during running? A pilot study. Isokinetics and Exercise Science. 2019; 27 (1):63-67.

Chicago/Turabian Style

Felipe García-Pinillos; Luis E. Roche-Seruendo; Amador García-Ramos; Rodrigo Ramírez-Campillo; Pedro Á. Latorre-Román. 2019. "How long is required to undertake step variability analysis during running? A pilot study." Isokinetics and Exercise Science 27, no. 1: 63-67.

Journal article
Published: 01 February 2019 in Gait & Posture
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ACS Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Rodrigo Ramírez-Campillo; Juan A. Párraga-Montilla; Luis E. Roche-Seruendo. How does the slope gradient affect spatiotemporal parameters during running? Influence of athletic level and vertical and leg stiffness. Gait & Posture 2019, 68, 72 -77.

AMA Style

Felipe García-Pinillos, Pedro Á. Latorre-Román, Rodrigo Ramírez-Campillo, Juan A. Párraga-Montilla, Luis E. Roche-Seruendo. How does the slope gradient affect spatiotemporal parameters during running? Influence of athletic level and vertical and leg stiffness. Gait & Posture. 2019; 68 ():72-77.

Chicago/Turabian Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Rodrigo Ramírez-Campillo; Juan A. Párraga-Montilla; Luis E. Roche-Seruendo. 2019. "How does the slope gradient affect spatiotemporal parameters during running? Influence of athletic level and vertical and leg stiffness." Gait & Posture 68, no. : 72-77.

Journal article
Published: 02 January 2019 in International Journal of Performance Analysis in Sport
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ACS Style

Felipe García-Pinillos; Rodrigo Ramírez-Campillo; Luis E. Roche-Seruendo; Víctor M. Soto-Hermoso; Pedro Á. Latorre-Román. How do recreational endurance runners warm-up and cool-down? A descriptive study on the use of continuous runs. International Journal of Performance Analysis in Sport 2019, 19, 102 -109.

AMA Style

Felipe García-Pinillos, Rodrigo Ramírez-Campillo, Luis E. Roche-Seruendo, Víctor M. Soto-Hermoso, Pedro Á. Latorre-Román. How do recreational endurance runners warm-up and cool-down? A descriptive study on the use of continuous runs. International Journal of Performance Analysis in Sport. 2019; 19 (1):102-109.

Chicago/Turabian Style

Felipe García-Pinillos; Rodrigo Ramírez-Campillo; Luis E. Roche-Seruendo; Víctor M. Soto-Hermoso; Pedro Á. Latorre-Román. 2019. "How do recreational endurance runners warm-up and cool-down? A descriptive study on the use of continuous runs." International Journal of Performance Analysis in Sport 19, no. 1: 102-109.

Journal article
Published: 30 November 2018 in Gait & Posture
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The force- and power-velocity (F-V and P-V, respectively) relationships have been extensively studied in recent years. However, its use and application in endurance running events is limited. This study aimed to determine if the P-V relationship in endurance runners fits a linear model when running at submaximal velocities, as well as to examine the feasibility of the “two-point method” for estimating power values at different running velocities. Eighteen endurance runners performed, on a motorized treadmill, an incremental running protocol to exhaustion. Power output was obtained at each stage with the Stryd™ power meter. The P-V relationship was determined from a multiple-point method (10, 12, 14, and 17 km·h-1) as well as from three two-point methods based on proximal (10 and 12 km·h-1), intermediate (10 and 14 km·h-1) and distal (10 and 17 km·h-1) velocities. The P-V relationship was highly linear ( r = 0.999). The ANOVAs revealed significant, although generally trivial (effect size < 0.20), differences between measured and estimated power values at all the velocities tested. Very high correlations ( r = 0.92) were observed between measured and estimated power values from the 4 methods, while only the multiple-point method ( r2 = 0.091) and two-point method distal ( r2 = 0.092) did not show heteroscedasticity of the error. The two-point method based on distant velocities (i.e., 10 and 17 km·h-1) is able to provide power output with the same accuracy than the multiple-point method. Therefore, since the two-point method is quicker and less prone to fatigue, we recommend the assessment of power output under only two distant velocities to obtain an accurate estimation of power under a wide range of submaximal running velocities.

ACS Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Luis E. Roche-Seruendo; Amador García-Ramos. Prediction of power output at different running velocities through the two-point method with the Stryd™ power meter. Gait & Posture 2018, 68, 238 -243.

AMA Style

Felipe García-Pinillos, Pedro Á. Latorre-Román, Luis E. Roche-Seruendo, Amador García-Ramos. Prediction of power output at different running velocities through the two-point method with the Stryd™ power meter. Gait & Posture. 2018; 68 ():238-243.

Chicago/Turabian Style

Felipe García-Pinillos; Pedro Á. Latorre-Román; Luis E. Roche-Seruendo; Amador García-Ramos. 2018. "Prediction of power output at different running velocities through the two-point method with the Stryd™ power meter." Gait & Posture 68, no. : 238-243.

Journal article
Published: 12 September 2018 in Journal of Biomechanics
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This study aimed to determine the minimum time required for assessing spatiotemporal variability during continuous running at different submaximal velocities and, thereby, the number of steps required. Nineteen trained endurance runners performed an incremental running protocol, with a 3-min recording period at 10, 12, 14 and 16 km/h. Spatiotemporal parameters (contact and flight times, step length and step frequency) were measured using the OptoGait system and step variability was considered for each parameter, in terms of within-participants standard deviation (SD) and coefficient of variation (CV%). Step variability was considered over six different durations at every velocity tested: 0–10 s, 0–20 s, 0–30 s, 0–60 s, 0–120 s and 0–180 s. The repeated measures ANOVA revealed no significant differences in the magnitude of the four spatiotemporal parameters between the recording intervals at each running velocity tested (p ≥ 0.05, ICC > 0.90). The post-hoc analysis confirmed no significant differences in step variability (SD and CV% of each spatiotemporal parameter at any velocity tested) between measurements. The Bland-Altman limits of agreement method showed that longer recording intervals yield smaller systematic bias, random errors, and narrower limits of agreement, regardless of running velocity. The results suggest that the duration of the recording period required to estimate spatiotemporal variability plays an important role in the accuracy of the measurement, regardless of running velocity (10–16 km/h).

ACS Style

Felipe García-Pinillos; Pedro A. Latorre-Román; Rodrigo Ramírez-Campillo; Juan A. Párraga-Montilla; Luis E. Roche-Seruendo. Minimum time required for assessing step variability during running at submaximal velocities. Journal of Biomechanics 2018, 80, 186 -195.

AMA Style

Felipe García-Pinillos, Pedro A. Latorre-Román, Rodrigo Ramírez-Campillo, Juan A. Párraga-Montilla, Luis E. Roche-Seruendo. Minimum time required for assessing step variability during running at submaximal velocities. Journal of Biomechanics. 2018; 80 ():186-195.

Chicago/Turabian Style

Felipe García-Pinillos; Pedro A. Latorre-Román; Rodrigo Ramírez-Campillo; Juan A. Párraga-Montilla; Luis E. Roche-Seruendo. 2018. "Minimum time required for assessing step variability during running at submaximal velocities." Journal of Biomechanics 80, no. : 186-195.