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I have a degree in Physical Activity Sciences, a degree in Sports Training, and a PhD. in Sports Sciences. I work at the University of Santiago de Chile as a teacher and researcher. My line of work is about in Functional Anatomy and Biomechanics applied to Sport, specifically to the study of endurance running and sprinting, and I complement my academic career as a trainer of middle and long-distance runners.
Governments have restricted public life during the COVID-19 pandemic, inter alia closing sports facilities and gyms. As regular exercise is essential for health, this study examined the effect of pandemic-related confinements on physical activity (PA) levels. A multinational survey was performed in 14 countries. Times spent in moderate-to-vigorous physical activity (MVPA) as well as in vigorous physical activity only (VPA) were assessed using the Nordic Physical Activity Questionnaire (short form). Data were obtained for leisure and occupational PA pre- and during restrictions. Compliance with PA guidelines was calculated based on the recommendations of the World Health Organization (WHO). In total, n = 13,503 respondents (39 ± 15 years, 59% females) were surveyed. Compared to pre-restrictions, overall self-reported PA declined by 41% (MVPA) and 42.2% (VPA). Reductions were higher for occupational vs. leisure time, young and old vs. middle-aged persons, previously more active vs. less active individuals, but similar between men and women. Compared to pre-pandemic, compliance with WHO guidelines decreased from 80.9% (95% CI: 80.3–81.7) to 62.5% (95% CI: 61.6–63.3). Results suggest PA levels have substantially decreased globally during the COVID-19 pandemic. Key stakeholders should consider strategies to mitigate loss in PA in order to preserve health during the pandemic.
Jan Wilke; Lisa Mohr; Adam Tenforde; Pascal Edouard; Chiara Fossati; Marcela González-Gross; Celso Sánchez Ramírez; Fernando Laiño; Benedict Tan; Julian Pillay; Fabio Pigozzi; David Jimenez-Pavon; Bernhard Novak; Johannes Jaunig; Mandy Zhang; Mireille van Poppel; Christoph Heidt; Steffen Willwacher; Gustavo Yuki; Daniel Lieberman; Lutz Vogt; Evert Verhagen; Luiz Hespanhol; Karsten Hollander. A Pandemic within the Pandemic? Physical Activity Levels Substantially Decreased in Countries Affected by COVID-19. International Journal of Environmental Research and Public Health 2021, 18, 2235 .
AMA StyleJan Wilke, Lisa Mohr, Adam Tenforde, Pascal Edouard, Chiara Fossati, Marcela González-Gross, Celso Sánchez Ramírez, Fernando Laiño, Benedict Tan, Julian Pillay, Fabio Pigozzi, David Jimenez-Pavon, Bernhard Novak, Johannes Jaunig, Mandy Zhang, Mireille van Poppel, Christoph Heidt, Steffen Willwacher, Gustavo Yuki, Daniel Lieberman, Lutz Vogt, Evert Verhagen, Luiz Hespanhol, Karsten Hollander. A Pandemic within the Pandemic? Physical Activity Levels Substantially Decreased in Countries Affected by COVID-19. International Journal of Environmental Research and Public Health. 2021; 18 (5):2235.
Chicago/Turabian StyleJan Wilke; Lisa Mohr; Adam Tenforde; Pascal Edouard; Chiara Fossati; Marcela González-Gross; Celso Sánchez Ramírez; Fernando Laiño; Benedict Tan; Julian Pillay; Fabio Pigozzi; David Jimenez-Pavon; Bernhard Novak; Johannes Jaunig; Mandy Zhang; Mireille van Poppel; Christoph Heidt; Steffen Willwacher; Gustavo Yuki; Daniel Lieberman; Lutz Vogt; Evert Verhagen; Luiz Hespanhol; Karsten Hollander. 2021. "A Pandemic within the Pandemic? Physical Activity Levels Substantially Decreased in Countries Affected by COVID-19." International Journal of Environmental Research and Public Health 18, no. 5: 2235.
Confinement measures during the COVID-19 pandemic have caused substantial reductions in global physical activity (PA) levels. In view of the manifold health benefits of PA, the development of interventions counteracting this trend is paramount. Our survey with 15,261 participants (38 ± 15 years, 58.5% females) examined preferences towards digital home exercise programs in 14 countries affected by COVID-19. More than two-thirds of the sample (68.4%, n = 10,433) indicated being interested in home exercise, and most participants were willing to work out at least three times per week (89.3%, n = 9328). Binary logistic regression revealed that female sex, working part-time, younger age, and being registered in a gym were associated with willingness to exercise. Flexibility (71.1%, n = 7377), resistance (68.6%, n = 7116), and endurance training (62.4%, n = 6478) were the most preferred types of exercise. Our results may guide health providers in developing individually tailored PA interventions during the current and future pandemics.
Jan Wilke; Lisa Mohr; Adam Tenforde; Pascal Edouard; Chiara Fossati; Marcela González-Gross; Celso Ramirez; Fernando Laiño; Benedict Tan; Julian Pillay; Fabio Pigozzi; David Jimenez-Pavon; Bernhard Novak; David Url; Mandy Zhang; Mireille Poppel; Christoph Heidt; Steffen Willwacher; Lutz Vogt; Evert Verhagen; Karsten Hollander; Luiz Hespanhol; Gustavo Yuki. Restrictercise! Preferences Regarding Digital Home Training Programs during Confinements Associated with the COVID-19 Pandemic. International Journal of Environmental Research and Public Health 2020, 17, 6515 .
AMA StyleJan Wilke, Lisa Mohr, Adam Tenforde, Pascal Edouard, Chiara Fossati, Marcela González-Gross, Celso Ramirez, Fernando Laiño, Benedict Tan, Julian Pillay, Fabio Pigozzi, David Jimenez-Pavon, Bernhard Novak, David Url, Mandy Zhang, Mireille Poppel, Christoph Heidt, Steffen Willwacher, Lutz Vogt, Evert Verhagen, Karsten Hollander, Luiz Hespanhol, Gustavo Yuki. Restrictercise! Preferences Regarding Digital Home Training Programs during Confinements Associated with the COVID-19 Pandemic. International Journal of Environmental Research and Public Health. 2020; 17 (18):6515.
Chicago/Turabian StyleJan Wilke; Lisa Mohr; Adam Tenforde; Pascal Edouard; Chiara Fossati; Marcela González-Gross; Celso Ramirez; Fernando Laiño; Benedict Tan; Julian Pillay; Fabio Pigozzi; David Jimenez-Pavon; Bernhard Novak; David Url; Mandy Zhang; Mireille Poppel; Christoph Heidt; Steffen Willwacher; Lutz Vogt; Evert Verhagen; Karsten Hollander; Luiz Hespanhol; Gustavo Yuki. 2020. "Restrictercise! Preferences Regarding Digital Home Training Programs during Confinements Associated with the COVID-19 Pandemic." International Journal of Environmental Research and Public Health 17, no. 18: 6515.
The objective of this research is to relate the performance in three vertical jump events with morphological variables of the foot and stature. A total of 177 practitioners of 12 sporting events aged 24.5 ±8.0 years, with 71.01 ±13.00 kg of body mass, 1.71±0.09 m height, and BMI of 24.29±3.24 kg·m-2 were evaluated with an anthropometer in terms of foot length (FL), forefoot width (FW), navicular height (NH), and hindfoot width (HW). These variables were normalized to the height of the subjects. From the footprint record the arch index (AI) was obtained, which indicates the morphology of the medial longitudinal foot arch (MLFA). Performance was evaluated in three vertical jump events: countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ), recording the height reached. FL, FW and HW show a weak positive correlation (r<0.4; p<0.05) with the heights achieved in the three types of jump. The stature is strongly associated with FL, FW and HW (r=0.8; r=0.7 and r=0.6; respectively; p<0.05) and with the height in CMJ, SJ, and DJ (r=0.37; r=0.41 and r=0.32, respectively, p<0.05). The only normalized morphological foot variable that maintained consistency in the correlations analysis was the normalized foot length (NFL) with CMJ (r = 0.2, p<0,05). The subjects whose left foot length was equivalent to 14 % of the stature jumped 27.94 ±6.63 cm, those with 15 % jumped 30.96 ±7.4 cm, and those with 16 % jumped 31.03 ±7.8 cm. FL, FW, HW, and stature are moderately correlated with performance in vertical jump events. However, after discarding the stature of the subjects, only the foot length maintained its relation with performance in CMJ.
Celso Sánchez-Ramírez; Xavier Aguado; Ignacio Hormazábal-Aguayo; Eduardo Alarcón. The Relation of Foot Morphology to Performance in Three Vertical Jumping Tasks. International Journal of Morphology 2020, 38, 545 -551.
AMA StyleCelso Sánchez-Ramírez, Xavier Aguado, Ignacio Hormazábal-Aguayo, Eduardo Alarcón. The Relation of Foot Morphology to Performance in Three Vertical Jumping Tasks. International Journal of Morphology. 2020; 38 (3):545-551.
Chicago/Turabian StyleCelso Sánchez-Ramírez; Xavier Aguado; Ignacio Hormazábal-Aguayo; Eduardo Alarcón. 2020. "The Relation of Foot Morphology to Performance in Three Vertical Jumping Tasks." International Journal of Morphology 38, no. 3: 545-551.
Este artículo presenta una visión propositiva de la bibliografía actual en la técnica de pateo en fútbol. Los objetivos de la investigación son: (i) identificar las variables cinéticas y cinemáticas potenciales utilizadas en los análisis de la técnica y (ii) determinar los valores de variables cinéticas y cinemáticas en relación con la técnica de pateo en fútbol. Se revisaron las siguientes bases de datos; PubMed y Taylor and Francis online, para obtener artículos seleccionados desde 2000-2017. Se utilizó la metodología PRISMA®; se incluyeron artículos con participantes adultos o juveniles sobre la mecánica de pateo en fútbol a través de variables biomecánicas. Los artículos incluidos fueron 29, posteriormente se elaboró un modelo técnico compuesto por cuatro fases: preparación, balanceo, impacto y seguimiento. Una perspectiva biomecánica con base en la técnica podría ofrecer una estrategia prometedora para mejorar, a partir del entrenamiento y análisis de la técnica, el rendimiento en fútbol además de proveer antecedentes para la prevención de lesiones.
Esteban Aedo-Muñoz; Victor Abarca-Reyes; María-José Torres-Moreno; Ricardo Bascuñan-Mosqueira; Ciro José Brito; Bianca Miarka; José Caro-San Juan; Celso Sánchez-Ramírez; Carolina Poblete-Gálvez. Propuesta de modelo técnico de pateo en fútbol: Una revisión sistemática de variables cinemáticas y cinéticas. MHSalud: Revista en Ciencias del Movimiento Humano y Salud 2020, 17, 1 -26.
AMA StyleEsteban Aedo-Muñoz, Victor Abarca-Reyes, María-José Torres-Moreno, Ricardo Bascuñan-Mosqueira, Ciro José Brito, Bianca Miarka, José Caro-San Juan, Celso Sánchez-Ramírez, Carolina Poblete-Gálvez. Propuesta de modelo técnico de pateo en fútbol: Una revisión sistemática de variables cinemáticas y cinéticas. MHSalud: Revista en Ciencias del Movimiento Humano y Salud. 2020; 17 (2):1-26.
Chicago/Turabian StyleEsteban Aedo-Muñoz; Victor Abarca-Reyes; María-José Torres-Moreno; Ricardo Bascuñan-Mosqueira; Ciro José Brito; Bianca Miarka; José Caro-San Juan; Celso Sánchez-Ramírez; Carolina Poblete-Gálvez. 2020. "Propuesta de modelo técnico de pateo en fútbol: Una revisión sistemática de variables cinemáticas y cinéticas." MHSalud: Revista en Ciencias del Movimiento Humano y Salud 17, no. 2: 1-26.
Although the studies of barefoot running have intensified, it is still missing longitudinal work analyzing the effects of barefoot running on the phases of plantar support. The objective of this research was to analyze the modifications undergone by the Total Foot Contact (TFC) phase and its Flat Foot Phase (FFP) in subjects beginning the practice of barefoot running, in its acute and chronic effects. A total of 28 subjects were divided into the Barefoot Group (BFGr) (n = 16) and the Shod Group (SHGr) (n = 12), evaluated before (Baseline) and after running for 20 min at 3.05 m·s-1 (Post 20 min Running), and at the end of a running training protocol with an 8-week long progressive volume (Post-8-week Training). The dynamic plantar support was measured with a baropodoscope. The duration of TFC (ms), the moment at which the FFP occurred, the maximum surface of TFC (MSTFC) (cm2), the FFP surface (SFFP) (cm2), the peak pressure of TFC (PP°TFC) (kg·cm-2), and the peak pressure of FFP (PP°FFP) (kg·cm-2) were recorded. The 3 × 2 ANOVA analysis was made to determine the effects and interactions that the condition produced (Shod/Barefoot), and the time factor (Baseline/Post 20 min Running/Post-8-week Training). The condition factor caused more significant effects than the time factor in all the variables. Duration of TFC in BFGr showed significant differences between the Baseline and Post-8-week Training (p = 0.000) and between Post-20-min Running and Post-8-week Training (p = 0.000), with an increasing trend. In the moment at which the FFP occurred a significant increase (p = 0.029) increase was found in Post-20 min Running (48.5%) compared to the Baseline (42.9%). In MSTFC, BFGr showed in Post-8-week Training values significantly higher than the Baseline (p = 0.000) and than Post-20-min Running (p = 0.000). SHGr presented a significant difference between the Baseline and Post-8-week Training (p = 0.040). SFFP in BFGr modified its values with an increasing trend (p = 0.000). PP°TFC in BFGr showed a significant decrease (p = 0.003) in Post-8-week Training (1.9 kg·cm-2) compared to the Baseline (2.4 kg·cm-2). In PP°FFP significant decreases were recorded in BFGr and between Post-8-week Training and Baseline (p = 0.000), and Post-8-week Training and Post 20 min Running (p = 0.035). The adaptation took place after the 8-week training. The adaptations to running barefoot were characterized by causing an increase of the foot's plantar support in TFC and in FFP, as well as a decrease of the plantar pressure peak in both phases. Also, there is an increased duration of the TFC and FFP, which may be related to an acquired strategy to attenuate the impacts of the ground's reaction forces.
Celso Sánchez-Ramírez; Luis M. Alegre. Plantar support adaptations in healthy subjects after eight weeks of barefoot running training. PeerJ 2020, 8, e8862 .
AMA StyleCelso Sánchez-Ramírez, Luis M. Alegre. Plantar support adaptations in healthy subjects after eight weeks of barefoot running training. PeerJ. 2020; 8 ():e8862.
Chicago/Turabian StyleCelso Sánchez-Ramírez; Luis M. Alegre. 2020. "Plantar support adaptations in healthy subjects after eight weeks of barefoot running training." PeerJ 8, no. : e8862.
Se sabe que hay gran variabilidad en la morfología de las zonas del pie entre sujetos. Esto es más evidente en deportistas, ya que la práctica de deportes somete a los pies a presiones y deformaciones anatómicas mayores que las que se ejercen en actividades de la vida diaria. Por lo anterior, se desprende que el conocimiento de la morfología del pie de la población objetivo es de alto interés para la confección de calzado apropiado a su forma y dimensiones. El objetivo de esta investigación es caracterizar variables morfológicas referidas a las dimensiones del pie de deportistas seleccionados universitarios chilenos. La muestra se conformó de 169 sujetos de ambos sexos de una población de deportistas universitarios de 23,27 años, 71 kilogramos, 1,71 metros de estatura e índice de masa corporal de 24,29. En las mediciones se utilizó un antropómetro y la clasificación del Arco Plantar Longitudinal Medial (APLM) se realizó mediante el Arch Index. Se demostró que la longitud del pie en hombres y mujeres se corresponde con el 15 % de la estatura del sujeto. La variable Ancho Antepie Normalizado (AAN) equivale al 39 % de la Longitud del Pie (LP), no registrándose diferencias entre sexos. El Ancho del Retropié por su parte, fue correspondiente con el 25 % de LP. El Ancho de Retropie (AR) equivale al 63 % del Ancho Antepie (AA). En cuanto al APLM, las mujeres presentan valores de normalidad ubicados entre 0,13 y 0,24 para pie izquierdo y 0,17 y 0,24 para pie derecho. Se aprecia que la prevalencia de pies planos fue mayor en hombres (25 % a 28 %) que en mujeres (4 % a 6 %) y la prevalencia de pies cavos fue mayor en mujeres (47 % a 53 %) respecto a hombres (27 % a 31 %).
Celso Sánchez; Eduardo Alarcón; Hugo Morales. Características Morfofuncionales del Pie de Deportistas Universitarios Chilenos en Diez Disciplinas Deportivas. International Journal of Morphology 2017, 35, 1403 -1408.
AMA StyleCelso Sánchez, Eduardo Alarcón, Hugo Morales. Características Morfofuncionales del Pie de Deportistas Universitarios Chilenos en Diez Disciplinas Deportivas. International Journal of Morphology. 2017; 35 (4):1403-1408.
Chicago/Turabian StyleCelso Sánchez; Eduardo Alarcón; Hugo Morales. 2017. "Características Morfofuncionales del Pie de Deportistas Universitarios Chilenos en Diez Disciplinas Deportivas." International Journal of Morphology 35, no. 4: 1403-1408.
Celso Sánchez Ramírez. Caracterización Morfológica del Arco Plantar Longitudinal Medial del Pie en una Población Chilena. International Journal of Morphology 2017, 35, 85 -91.
AMA StyleCelso Sánchez Ramírez. Caracterización Morfológica del Arco Plantar Longitudinal Medial del Pie en una Población Chilena. International Journal of Morphology. 2017; 35 (1):85-91.
Chicago/Turabian StyleCelso Sánchez Ramírez. 2017. "Caracterización Morfológica del Arco Plantar Longitudinal Medial del Pie en una Población Chilena." International Journal of Morphology 35, no. 1: 85-91.