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Regular physical activity and healthy diet have a significant positive impact on children’s health. Lack of physical activity increases the risk of various diseases, while obesity has become an alarming health problem worldwide. The aim of this study is to investigate the patterns of physical activity and diet among 11–14-year-old school children in Serbia. The sample included 623 primary school children, of whom 333 were boys (53.45%) and 290 were girls (46.55%). The children were also divided according to their age/grade: fifth grade/11 years (24.40% (n = 152; M = 84, F = 68)), sixth grade/12 years (25.68% (n = 160; M = 91, F = 69)), seventh grade/13 years (26.81% (n = 167; M = 83, F = 84)) and eighth grade/14 years (23.11% (n = 144; M = 75, F = 69)). Children’s lifestyle was assessed using two subscales of questionnaires based on the Health-Promoting Lifestyle Profile model II. The Mann–Whitney U test showed no statistically significant difference between boys and girls in the variables Nutrition (p = 0.81) and Physical Activity (p = 0.91). The Kruskal–Wallis test was applied and showed no statistically significant differences between children of different ages, regardless of gender, in the variable Nutrition (p = 0.63). However, differences were evident in the variable Physical Activity (p< 0.001), with the highest mean scores recorded in 12- and 13-year-old children and the lowest in 14-year-old children. Additionally, no statistically significant differences were found among boys as a function of age in the variables Nutrition (p = 0.55) and Physical Activity (p = 0.15), nor among girls in the variable Nutrition (p = 0.43), but in the variable Physical Activity (p = 0.01). In general, it can be concluded that the older primary school children have relatively satisfactory dietary and physical activity habits, but that these behaviors decrease with age, especially the level of physical activity. There is a need for better and more effective education of children about the benefits and importance of proper nutrition and regular physical activity.
Biljana Cvetković; Milan Cvetković; Tanja Petrušič; Višnja Đorđić; Saša Bubanj; Boris Popović; Slobodan Andrašić; Svetlana Buišić; Špela Bogataj. Nutrition and Physical Activity Behavior in 11–14-Year-Old Schoolchildren in Serbia. Children 2021, 8, 625 .
AMA StyleBiljana Cvetković, Milan Cvetković, Tanja Petrušič, Višnja Đorđić, Saša Bubanj, Boris Popović, Slobodan Andrašić, Svetlana Buišić, Špela Bogataj. Nutrition and Physical Activity Behavior in 11–14-Year-Old Schoolchildren in Serbia. Children. 2021; 8 (8):625.
Chicago/Turabian StyleBiljana Cvetković; Milan Cvetković; Tanja Petrušič; Višnja Đorđić; Saša Bubanj; Boris Popović; Slobodan Andrašić; Svetlana Buišić; Špela Bogataj. 2021. "Nutrition and Physical Activity Behavior in 11–14-Year-Old Schoolchildren in Serbia." Children 8, no. 8: 625.
The present study is aimed at determining the effects of intensity-modified recreational volleyball training on health markers and physical fitness in healthy middle-aged men. Thirty-four healthy untrained men aged 25–55 years were randomized to either a modified recreational volleyball group (MRV, n = 17 ) or a recreational volleyball group (RV, n = 17 ). Both groups performed volleyball training twice a week over 12 weeks, with participants in MRV playing a modified game with higher intensity due to shorter breaks between rallies. The small to moderate improvements of both groups were observed in SBP (MRV g av = − 0.50 [-0.67, -0.33] vs. RV g av = − 0.37 [-0.55, -0.20]) to a similar extent ( p = 0.12 ). However, only the MRV significantly improved ( p < 0.001 ) the mean body weight ( g av = − 0.35 [-0.52, -0.18]) and BMI ( g av = − 0.39 [-0.56, -0.22]) to a moderate extent and the YYIR1 performance ( g av = 2.45 [2.22, 2.69]) to a large extent. Even though both groups significantly improved the rest HR, the mean change of rest HR was significantly greater in MRV as compared to the RV ( p < 0.001 , ŋ p 2 = 0.47 ). The study revealed that an intensity-modified type of recreational volleyball, involving shorter breaks between rallies, improves cardiorespiratory fitness and health markers for men aged 25–55 years.
Goran Vasić; Nebojša Trajković; Draženka Mačak; Tine Sattler; Peter Krustrup; Nikola Starčević; Goran Sporiš; Špela Bogataj. Intensity-Modified Recreational Volleyball Training Improves Health Markers and Physical Fitness in 25–55-Year-Old Men. BioMed Research International 2021, 2021, 1 -9.
AMA StyleGoran Vasić, Nebojša Trajković, Draženka Mačak, Tine Sattler, Peter Krustrup, Nikola Starčević, Goran Sporiš, Špela Bogataj. Intensity-Modified Recreational Volleyball Training Improves Health Markers and Physical Fitness in 25–55-Year-Old Men. BioMed Research International. 2021; 2021 ():1-9.
Chicago/Turabian StyleGoran Vasić; Nebojša Trajković; Draženka Mačak; Tine Sattler; Peter Krustrup; Nikola Starčević; Goran Sporiš; Špela Bogataj. 2021. "Intensity-Modified Recreational Volleyball Training Improves Health Markers and Physical Fitness in 25–55-Year-Old Men." BioMed Research International 2021, no. : 1-9.
The aim of this systematic review is to investigate the effects of the use of a medium cut-off membrane (MCO) and dietary fiber on the concentration of protein-bound uremic toxins (PBUTs) and inflammatory markers in hemodialysis (HD) patients. Of 11,397 papers originally found, eight met the criteria of randomized controlled trial design. No study examined the effects of MCO membranes on PBUTs. Three studies examined the reduction in inflammatory markers with MCO membranes compared to high-flux HD membranes and showed no significant differences. Five studies of dietary fiber supplementation showed an inconclusive positive effect on PBUT levels and a significant positive effect on the reduction in inflammatory markers (interleukin-6 reduction: standardized difference in means −1.18; 95% confidence interval −1.45 to −0.9 for dietary fiber supplementation vs. control; p < 0.001). To date, no study has combined the use of an MCO membrane and fiber supplementation to reduce PBUT levels and inflammation with online hemodiafiltration as a comparator. A rationale and protocol for an interventional trial using a combination of MCO membrane dialysis and fiber supplementation to lower inflammatory markers and PBUT concentrations are presented.
Tjaša Herič; Tjaša Vivoda; Špela Bogataj; Jernej Pajek. Medium Cut-Off Dialysis Membrane and Dietary Fiber Effects on Inflammation and Protein-Bound Uremic Toxins: A Systematic Review and Protocol for an Interventional Study. Toxins 2021, 13, 244 .
AMA StyleTjaša Herič, Tjaša Vivoda, Špela Bogataj, Jernej Pajek. Medium Cut-Off Dialysis Membrane and Dietary Fiber Effects on Inflammation and Protein-Bound Uremic Toxins: A Systematic Review and Protocol for an Interventional Study. Toxins. 2021; 13 (4):244.
Chicago/Turabian StyleTjaša Herič; Tjaša Vivoda; Špela Bogataj; Jernej Pajek. 2021. "Medium Cut-Off Dialysis Membrane and Dietary Fiber Effects on Inflammation and Protein-Bound Uremic Toxins: A Systematic Review and Protocol for an Interventional Study." Toxins 13, no. 4: 244.
Hemodialysis (HD) patients have lower functional abilities compared to healthy people, and this is associated with lower physical activity in everyday life. This may affect their quality of life, but research on this topic is limited. Therefore, the present study aimed to determine the relationship between habitual physical activity and quality of life in HD patients and healthy controls. Ninety-three HD patients and 140 controls participated in the study. Quality of life was assessed using a 36-item medical outcomes study short-form health survey (SF-36). Human Activity Profile (HAP) was used to assess habitual physical activity. The adjusted activity score (AAS) from HAP, age, gender, fat tissue index (FTI), lean tissue index (LTI), and Davies comorbidity score were analyzed as possible predictors of the Physical Component Summary (PCS) of the SF-36. Three sequential linear models were used to model PCS. In Model 1, PCS was regressed by gender and age; in Model 2 the LTI, FTI, and Davies comorbidity scores were added. Model 3 also included AAS. After controlling for age and gender (ModelHD 1: p = 0.056), LTI, FTI, and Davies comorbidity score effects (ModelHD 2: p = 0.181), the AAS accounted for 32% of the variation in PCS of HD patients (ModelHD 3: p < 0.001). Consequently, the PCS of HD patients would increase by 0.431 points if the AAS increased by one point. However, in healthy controls, AAS had a lower impact than in the HD sample (B = 0.359 vs. 0.431), while the corresponding effects of age and gender (ModelH 1: p < 0.001), LTI, FTI, and Davies comorbidity score (ModelH 2: p < 0.001) were adjusted for. The proportion of variation in PCS attributed to AAS was 14.9% (ModelH 3: p < 0.001). The current study results showed that physical activity in everyday life as measured by the HAP questionnaire is associated to a higher degree with the quality of life of HD patients than in healthy subjects. Routine physical activity programs are therefore highly justified, and the nephrology community should play a leading role in this effort.
Tjaša Filipčič; Špela Bogataj; Jernej Pajek; Maja Pajek. Physical Activity and Quality of Life in Hemodialysis Patients and Healthy Controls: A Cross-Sectional Study. International Journal of Environmental Research and Public Health 2021, 18, 1978 .
AMA StyleTjaša Filipčič, Špela Bogataj, Jernej Pajek, Maja Pajek. Physical Activity and Quality of Life in Hemodialysis Patients and Healthy Controls: A Cross-Sectional Study. International Journal of Environmental Research and Public Health. 2021; 18 (4):1978.
Chicago/Turabian StyleTjaša Filipčič; Špela Bogataj; Jernej Pajek; Maja Pajek. 2021. "Physical Activity and Quality of Life in Hemodialysis Patients and Healthy Controls: A Cross-Sectional Study." International Journal of Environmental Research and Public Health 18, no. 4: 1978.
Regular exercise during school hours is encouraged since childhood obesity has reached epidemic proportions. Moreover, a great majority of adolescents do not meet the recommendations for moderate-to-vigorous physical activity. The present study aimed to determine the effects of school-based high-intensity interval training (HIIT) and nutrition intervention on body composition and physical fitness in overweight adolescent girls. Forty-eight girls were included in the study, of whom 24 (age = 15.5 ± 0.7 years) were randomized to a experimental group (EXP) (HIIT and nutrition intervention school-based program) and 24 (age = 15.7 ± 0.6 years) to a control group (CON) that maintained their usual physical education activities. HIIT consisted of 10 stations of own bodyweight exercise and was done three times per week for eight weeks. Moreover, the EXP participated in the nutrition program led by a nutritionist two times a week. Apart from body composition assessment, participants performed countermovement jump (CMJ), medicine ball throw, hand-grip test, and Yo-Yo Intermittent Recovery Level 1 Test (YYIRT1). A significant effect of group (EXP vs. CON) x time (pre vs. post) interaction was observed for weight [F(1,44) = 7.733; p = 0.008], body mass index [F(1,44) = 5.764; p = 0.020], body fat (in kg) [F(1,44) = 17.850; p < 0.001], and body fat (in %) [F(1,44) = 18.821; p < 0.001]. Moreover, a significant interaction was observed for the medicine ball throw [F(1,44) = 27.016; p < 0.001] and YYIRT1 [F(1,44) = 5.439; p = 0.024]. A significant main effect for time was found for hand grip [F(1,44) = 9.300; p = 0.004] and CMJ [F(1,44) = 12.866; p = 0.001].The present study has demonstrated that just eight weeks school-based HIIT and nutrition intervention, including three sessions a week, can improve body composition and muscular and physical aerobic performance in overweighted adolescent girls.
Špela Bogataj; Nebojša Trajković; Cristina Cadenas-Sanchez; Vedrana Sember. Effects of School-Based Exercise and Nutrition Intervention on Body Composition and Physical Fitness in Overweight Adolescent Girls. Nutrients 2021, 13, 238 .
AMA StyleŠpela Bogataj, Nebojša Trajković, Cristina Cadenas-Sanchez, Vedrana Sember. Effects of School-Based Exercise and Nutrition Intervention on Body Composition and Physical Fitness in Overweight Adolescent Girls. Nutrients. 2021; 13 (1):238.
Chicago/Turabian StyleŠpela Bogataj; Nebojša Trajković; Cristina Cadenas-Sanchez; Vedrana Sember. 2021. "Effects of School-Based Exercise and Nutrition Intervention on Body Composition and Physical Fitness in Overweight Adolescent Girls." Nutrients 13, no. 1: 238.
This study investigated the effects of the Teaching Games for Understanding (TGfU) model implemented in physical education classes on volleyball skills and enjoyment in secondary school students. A total of 54 students (18 girls) from two classes participated in this study, of whom 28 (age = 15.5 ± 0.7 years) were randomized to a TGfU model (EXP) group and 26 (age = 15.7 ± 0.6 years) to a control group (CON) that maintained their usual physical-education activities. Four tests for volleyball skills were conducted: service, overhead, and forearm passing and setting. Additionally, the sport enjoyment questionnaire was used the first and the last week of intervention. Results from repeated measures analysis of variance (ANOVA) showed a significant interaction for overhead passing (F 1, 58 = 5.273, p = 0.025, Partial ƞ2 = 0.083) and forearm passing (F 1, 58 = 4.641, p = 0.035, Partial ƞ2 = 0.074). When examining the impact of TGfU program on service accuracy, there was a significant main effect for time (p < 0.01) with both groups improving their result after the six-weeks intervention (EXP-ES = 0.32, % change = 9.1% vs. CON-ES = 0.57, % change = 14.4%). There were no significant time or group x time effects for setting (p ˃ 0.05). The EXP group showed significantly better results for enjoyment compared to the CON group (p ≤ 0.05). The findings show the effectiveness of the TGfU model of short duration (12 lessons) in an educational context to improve volleyball skills. We also highlight the importance of enjoyment during these classes compared to traditional physical education classes.
Maja Batez; Tanja Petrušič; Špela Bogataj; Nebojša Trajković. Effects of Teaching Program Based on Teaching Games for Understanding Model on Volleyball Skills and Enjoyment in Secondary School Students. Sustainability 2021, 13, 606 .
AMA StyleMaja Batez, Tanja Petrušič, Špela Bogataj, Nebojša Trajković. Effects of Teaching Program Based on Teaching Games for Understanding Model on Volleyball Skills and Enjoyment in Secondary School Students. Sustainability. 2021; 13 (2):606.
Chicago/Turabian StyleMaja Batez; Tanja Petrušič; Špela Bogataj; Nebojša Trajković. 2021. "Effects of Teaching Program Based on Teaching Games for Understanding Model on Volleyball Skills and Enjoyment in Secondary School Students." Sustainability 13, no. 2: 606.
Background Exercise has various positive effects on hemodialysis patients. However, there is no clear evidence which type of exercise yields better results. This study aimed to determine the effects of guided functional training added to the intradialytic cycling on dialysis adequacy and biochemical parameters in hemodialysis patients. Additionally, we aimed to investigate if patients could transfer functional exercise to an unsupervised home environment and retain gained improvements. Methods Randomization was done to a functional training intervention group (INT) (n = 20) or intradialytic cycling control group (CON) (n = 20). The INT attended a pre-dialysis functional training in the first 8 weeks. In the second 8 weeks, they performed functional exercises at unsupervised home environment on non-dialysis days. During the whole study, both groups participated in the intradialytic cycling program. Results Both groups demonstrated a significant increase in dialysis adequacy (Kt/V) in the eight (0.15, 95% CI 0.06 to 0.24; p = 0.003 for INT and 0.21, 95% CI 0.11 to 0.3; p < 0.001 for CON) and the 16th study week (0.13, 95% CI 0.03 to 0.24; p = 0.017 for INT and 0.13, 95% CI 0.03 to 0.22; p = 0.013 for CON) compared to their baseline values with no significant between-group differences. At week eight, the total cholesterol was significantly lowered in the INT (− 0.34 mmol/L, 95% CI − 0.6 to − 0.07; p = 0.016) and remained lower at week 16 (− 0.32 mmol/L, 95% CI − 0.64 to − 0.01; p = 0.049) with no significant changes in the CON. Low-density lipoprotein levels in the INT were significantly reduced after 8 weeks (− 0.35 mmol/L, 95% CI − 0.64 to − 0.06; p = 0.022) and remained reduced after 16 weeks (− 0.28 mmol/L, 95% CI − 0.52 to − 0.03; p = 0.030). There were no significant differences found for albumin, high-density lipoprotein cholesterol, triglycerides, C-reactive protein, and hemoglobin in both groups. Conclusions We demonstrated that functional training added to intradialytic cycling improved lipid profile and dialysis adequacy. Additionally, the effects of the unsupervised, home-based program were preserved during the second study phase. This study supports the assumption that combined training is more effective compared to solely intradialytic exercise. Trial registration ClinicalTrials.Gov, NCT03334123. Registered 07 November 2017.
Špela Bogataj; Jernej Pajek; Jadranka Buturović Ponikvar; Maja Pajek. Functional training added to intradialytic cycling lowers low-density lipoprotein cholesterol and improves dialysis adequacy: a randomized controlled trial. BMC Nephrology 2020, 21, 1 -10.
AMA StyleŠpela Bogataj, Jernej Pajek, Jadranka Buturović Ponikvar, Maja Pajek. Functional training added to intradialytic cycling lowers low-density lipoprotein cholesterol and improves dialysis adequacy: a randomized controlled trial. BMC Nephrology. 2020; 21 (1):1-10.
Chicago/Turabian StyleŠpela Bogataj; Jernej Pajek; Jadranka Buturović Ponikvar; Maja Pajek. 2020. "Functional training added to intradialytic cycling lowers low-density lipoprotein cholesterol and improves dialysis adequacy: a randomized controlled trial." BMC Nephrology 21, no. 1: 1-10.
This study aimed to determine the effects of an after-school volleyball program on aggression and physical fitness in 14–16 years old students. One hundred and seven participants were randomized to a small-sided volleyball (SSV) training group or a control group (CON). The SSV group completed 8 months of small-sided volleyball training twice a week after school in addition to the regular physical education classes. Yo-Yo Intermittent Recovery Level 1 test (YYIRT1), medicine ball throw (MED), vertical jump (VJ), and Buss and Perry’s aggression questionnaire were evaluated before and after 8 months of training. Results revealed a significant interaction effect (group × time) in total sample for physical aggression [F(1, 105) = 17.688; p < 0.001], verbal aggression [F(1, 105) = 4.973; p = 0.028], anger [F(1, 105) = 7.662; p = 0.007], medicine ball throw [F(1, 105) = 36.143; p < 0.001], and YYIRT1 [F(1, 105) = 12.508; p = 0.001]. After-school small-sided volleyball for adolescents was accompanied by a significant decrease in aggression compared to physical education classes only. Additionally, adolescents from SSV group showed better results in physical fitness compared to the control group. Our findings significantly contribute to the understanding of possible mechanisms for reducing adolescents’ aggression, which include enjoyment, motivation, and self-control through sport intervention.
Nebojša Trajković; Maja Pajek; Goran Sporiš; Lidija Petrinović; Špela Bogataj. Reducing Aggression and Improving Physical Fitness in Adolescents Through an After-School Volleyball Program. Frontiers in Psychology 2020, 11, 2081 .
AMA StyleNebojša Trajković, Maja Pajek, Goran Sporiš, Lidija Petrinović, Špela Bogataj. Reducing Aggression and Improving Physical Fitness in Adolescents Through an After-School Volleyball Program. Frontiers in Psychology. 2020; 11 ():2081.
Chicago/Turabian StyleNebojša Trajković; Maja Pajek; Goran Sporiš; Lidija Petrinović; Špela Bogataj. 2020. "Reducing Aggression and Improving Physical Fitness in Adolescents Through an After-School Volleyball Program." Frontiers in Psychology 11, no. : 2081.
Research in preschool children that investigates the impact of different exercise interventions on physical fitness is limited. This pre–post study was aimed at determining if participation in a nine-month structured multisport program (MSG; n = 38) could enhance physical fitness components compared to a formal exercise program (control group (CG); n = 36) among preschool children. Physical fitness was assessed using standardized tests (the standing long jump, sit and reach, 20 m sprint, sit-ups for 30 s, bent-arm hang, medicine ball throw (MBT), grip strength, 4x10 m shuttle run, and 20 m shuttle run tests). The structured multisport program involved fundamental/gross and fine motor skills and ball game-based exercises twice a week. The control group was free of any programmed exercise except for the obligatory program in kindergartens. A mixed ANOVA demonstrated significant group-by-time interaction effects for the 4x10m shuttle run, standing long jump, sit-ups, bent-arm hang, grip strength, and sit and reach tests (p < 0.05). There was no significant group-by-time interaction effect for the 20 m sprint test (p = 0.794) or for the 20 m shuttle run test (p = 0.549). Moreover, the MSG and CG performance in the MBT and 20 m shuttle run tests improved to a similar extent from pre- to post-test. Our results indicate that compared to the formal plan, the structured multisport program led to a sustained improvement in physical fitness in healthy 5-to-6-year old children.
Boris Popović; Milan Cvetković; Draženka Mačak; Tijana Šćepanović; Nebojša Čokorilo; Aleksandra Belić; Nebojša Trajković; Slobodan Andrašić; Špela Bogataj. Nine Months of a Structured Multisport Program Improve Physical Fitness in Preschool Children: A Quasi-Experimental Study. International Journal of Environmental Research and Public Health 2020, 17, 4935 .
AMA StyleBoris Popović, Milan Cvetković, Draženka Mačak, Tijana Šćepanović, Nebojša Čokorilo, Aleksandra Belić, Nebojša Trajković, Slobodan Andrašić, Špela Bogataj. Nine Months of a Structured Multisport Program Improve Physical Fitness in Preschool Children: A Quasi-Experimental Study. International Journal of Environmental Research and Public Health. 2020; 17 (14):4935.
Chicago/Turabian StyleBoris Popović; Milan Cvetković; Draženka Mačak; Tijana Šćepanović; Nebojša Čokorilo; Aleksandra Belić; Nebojša Trajković; Slobodan Andrašić; Špela Bogataj. 2020. "Nine Months of a Structured Multisport Program Improve Physical Fitness in Preschool Children: A Quasi-Experimental Study." International Journal of Environmental Research and Public Health 17, no. 14: 4935.
Spela Bogataj; Jernej Pajek; Jadranka Buturovic Ponikvar; Maja Pajek. Addition Of A Kinesiologist-guided Functional Exercise To Intradialytic Cycling Program: A Randomized Controlled Trial. Medicine & Science in Sports & Exercise 2020, 52, 292 -292.
AMA StyleSpela Bogataj, Jernej Pajek, Jadranka Buturovic Ponikvar, Maja Pajek. Addition Of A Kinesiologist-guided Functional Exercise To Intradialytic Cycling Program: A Randomized Controlled Trial. Medicine & Science in Sports & Exercise. 2020; 52 (7S):292-292.
Chicago/Turabian StyleSpela Bogataj; Jernej Pajek; Jadranka Buturovic Ponikvar; Maja Pajek. 2020. "Addition Of A Kinesiologist-guided Functional Exercise To Intradialytic Cycling Program: A Randomized Controlled Trial." Medicine & Science in Sports & Exercise 52, no. 7S: 292-292.
This study aimed to examine the reliability, validity, and usefulness of the smartphone-based application, My Jump 2, against Optojump in recreationally active adults. Participants (18 women, 28.9 ± 5.6 years, and 26 men, 30.1 ± 10.6 years) completed squat jumps (SJ), counter-movement jumps (CMJ), and CMJ with arm swing (CMJAS) on Optojump and were simultaneously recorded using My Jump 2. To evaluate concurrent validity, jump height, calculated from flight time attained from each device, was compared for each jump type. Test-retest reliability was determined by replicating data analysis of My Jump 2 recordings on two occasions separated by two weeks. High test-retest reliability (Intraclass correlation coefficient (ICC) > 0.93) was observed for all measures in both male and female athletes. Very large correlations were observed between the My Jump 2 app and Optojump for SJ (r = 0.95, p = 0.001), CMJ (r = 0.98, p = 0.001), and CMJAS (r = 0.98, p = 0.001) in male athletes. Similar results were obtained for female recreational athletes for all jumps (r > 0.94, p = 0.001). The study results suggest that My Jump 2 is a valid, reliable, and useful tool for measuring vertical jump in recreationally active adults. Therefore, due to its simplicity and practicality, it can be used by practitioners, coaches, and recreationally-active adults to measure vertical jump performance with a simple test as SJ, CMJ, and CMJAS.
Špela Bogataj; Maja Pajek; Slobodan Andrašić; Nebojša Trajković. Concurrent Validity and Reliability of My Jump 2 App for Measuring Vertical Jump Height in Recreationally Active Adults. Applied Sciences 2020, 10, 3805 .
AMA StyleŠpela Bogataj, Maja Pajek, Slobodan Andrašić, Nebojša Trajković. Concurrent Validity and Reliability of My Jump 2 App for Measuring Vertical Jump Height in Recreationally Active Adults. Applied Sciences. 2020; 10 (11):3805.
Chicago/Turabian StyleŠpela Bogataj; Maja Pajek; Slobodan Andrašić; Nebojša Trajković. 2020. "Concurrent Validity and Reliability of My Jump 2 App for Measuring Vertical Jump Height in Recreationally Active Adults." Applied Sciences 10, no. 11: 3805.
The ability to differentiate the elite from nonelite athletes is not clearly defined. We investigated level differences in speed, change of direction speed (CODS), and reactive agility in a group of trained adolescent soccer players. A total of 75 adolescent male soccer players (aged 14–19 years) were recruited. The players were grouped based on the level of play to elite, sub-elite, and amateur players. Players were tested for 5-, 10- and 20-m sprints, CODS, and reactive agility tests (RAT). Elite players had faster reaction movement time during RAT with live opponent stimuli (p ≤ 0.01) compared to sub-elite and amateur players. Moreover, elite players showed a faster time during light stimuli (p ≤ 0.01) but only compared to amateur players. The times for 5-m and 10-m sprint groups did not differ (p > 0.05). The results demonstrated that the skilled players (elite and sub-elite) performed better in reactive agility tests, speed, and COD speed compared to amateur players. Additionally, we can conclude that total and reaction time in the agility test with live opponent stimuli can be a significant factor that differentiates between adolescent soccer players considering their level.
Nebojša Trajković; Goran Sporiš; Tomislav Krističević; Dejan M. Madić; Špela Bogataj. The Importance of Reactive Agility Tests in Differentiating Adolescent Soccer Players. International Journal of Environmental Research and Public Health 2020, 17, 3839 .
AMA StyleNebojša Trajković, Goran Sporiš, Tomislav Krističević, Dejan M. Madić, Špela Bogataj. The Importance of Reactive Agility Tests in Differentiating Adolescent Soccer Players. International Journal of Environmental Research and Public Health. 2020; 17 (11):3839.
Chicago/Turabian StyleNebojša Trajković; Goran Sporiš; Tomislav Krističević; Dejan M. Madić; Špela Bogataj. 2020. "The Importance of Reactive Agility Tests in Differentiating Adolescent Soccer Players." International Journal of Environmental Research and Public Health 17, no. 11: 3839.
There is a persistent need in sport science for developing a measuring tool that is affordable, portable, and easy to use. We aimed to examine the concurrent validity and test–retest reliability of the My Jump 2 app compared to a validated OptoJump instrument for measuring jump performance during the squat jump (SJ), countermovement jump (CMJ), and CMJ free arms (CMJAM) in primary school children. A total of 48 participants (11–14 years age), volunteered to participate in this research. The jumps were recorded with a validated OptoJump photoelectric cell system and a concurrent device (iPhone X through My Jump 2 app) at the same time. The participants repeated the testing procedure after two weeks to assess the reliability of the measurements (ICC). Systematic bias between sessions and tools was evaluated using the paired samples t-test and Bland and Altman analysis. High test–retest reliability (ICC > 0.89) was observed for all measures’ in-between conditions. Very large correlations in the total sample were observed between the My Jump 2 app and OptoJump for SJ (r = 0.97, p = 0.001), CMJ (r = 0.97, p = 0.001), and CMJAM (r = 0.99, p = 0.001). Bland and Altman’s plot depicting limits of agreement for the total sample between the OptoJump and My Jump 2 show that the majority of data points are within the 95% CIs. The results of this study suggest that My Jump 2 is a valid, reliable, and useful tool for measuring jump performance in primary school children.
Špela Bogataj; Maja Pajek; Vedran Hadžić; Slobodan Andrašić; Johnny Padulo; Nebojša Trajković. Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children. International Journal of Environmental Research and Public Health 2020, 17, 3708 .
AMA StyleŠpela Bogataj, Maja Pajek, Vedran Hadžić, Slobodan Andrašić, Johnny Padulo, Nebojša Trajković. Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children. International Journal of Environmental Research and Public Health. 2020; 17 (10):3708.
Chicago/Turabian StyleŠpela Bogataj; Maja Pajek; Vedran Hadžić; Slobodan Andrašić; Johnny Padulo; Nebojša Trajković. 2020. "Validity, Reliability, and Usefulness of My Jump 2 App for Measuring Vertical Jump in Primary School Children." International Journal of Environmental Research and Public Health 17, no. 10: 3708.
The purpose of this study was to define if Outcomes Expectations for Exercise (OEE) and Decisional Balance (DB) scales predict adherence to guided exercise programs and associate with the improvement in physical performance in the dialysis population. Participants (n = 40; age 63.6 ± 12.5 years) completed OEE and DB questionnaires before randomization to the experimental group (n = 20) and control group (n = 20) of a two-phased exercise program—the experimental group received eight weeks of supervised functional exercise and exercise counseling (1st phase) before commencing eight weeks of home-based exercise on non-dialysis days (2nd phase). Both groups performed intradialytic cycling on dialysis days during both study phases. Patients with above-median OEE and DB scores (>3.15 and >1.3, respectively) expressed significantly better adherence to intradialytic cycling (89% vs. 76%, 89% vs. 77%, respectively, p < 0.05). Experimental group patients with an above-median OEE (but not DB) score had significantly better adherence to supervised and home-based functional exercise (93% vs. 81% and 85% vs. 60%, respectively, p < 0.05). Baseline DB score predicted the final result in the hand-grip test and 6-min walk test. Low OEE and, to a lesser degree, low DB questionnaire scores associate with inferior adherence to dialysis bundled and home-based exercise programs and may help define patient subsets in need of intensified motivational input by exercise caregivers.
Špela Bogataj; Maja Pajek; Jadranka Buturović Ponikvar; Jernej Pajek. Outcome Expectations for Exercise and Decisional Balance Questionnaires Predict Adherence and Efficacy of Exercise Programs in Dialysis Patients. International Journal of Environmental Research and Public Health 2020, 17, 3175 .
AMA StyleŠpela Bogataj, Maja Pajek, Jadranka Buturović Ponikvar, Jernej Pajek. Outcome Expectations for Exercise and Decisional Balance Questionnaires Predict Adherence and Efficacy of Exercise Programs in Dialysis Patients. International Journal of Environmental Research and Public Health. 2020; 17 (9):3175.
Chicago/Turabian StyleŠpela Bogataj; Maja Pajek; Jadranka Buturović Ponikvar; Jernej Pajek. 2020. "Outcome Expectations for Exercise and Decisional Balance Questionnaires Predict Adherence and Efficacy of Exercise Programs in Dialysis Patients." International Journal of Environmental Research and Public Health 17, no. 9: 3175.
The present study aimed to investigate whether recreational volleyball organized as small-sided games could improve fitness and health profiles of middle-aged men after 10 weeks of training. Twenty-four healthy men aged 35–55 were randomized in a small-sided recreational volleyball group (RV = 12; age: 44.7 ± 6.34 years; body mass index: 25.85 ± 1.74) and control group (CON = 12; age: 42.9 ± 8.72 years; body mass index: 25.62 ± 1.48). The RV group carried out a volleyball training program, whereas the CON group continued their daily life activities during this period. The participants in the RV group performed 2/3 training sessions of 90 min per week. Results from a repeated measure ANOVA indicated a significant group × time interaction for low-density lipoprotein (LDL) cholesterol (F = 6.776, p = 0.016, partial ƞ2 = 0.235) and for resting heart rate (F = 11.647, p = 0.002, partial ƞ2 = 0.346) in favor of the RV group. No significant changes were observed for body weight, body mass index, and diastolic blood pressure. Results for physical fitness indicated a significant interaction for Yo-Yo intermittent recovery test–level 2 (F = 11.648, p = 0.003, partial ƞ2 = 0.380), with no significant changes in both groups for handgrip strength. Recreational small-sided volleyball can be an effective training modality to stimulate a decrease in LDL cholesterol and resting HR with small improvements in cardiovascular fitness. Recreational volleyball played only two times per week shows positive cardiovascular fitness and health-related adaptations, which may contribute to the reduction of the risk of developing lifestyle diseases.
Nebojša Trajković; Goran Sporiš; Tomislav Krističević; Špela Bogataj. Effects of Small-Sided Recreational Volleyball on Health Markers and Physical Fitness in Middle-Aged Men. International Journal of Environmental Research and Public Health 2020, 17, 3021 .
AMA StyleNebojša Trajković, Goran Sporiš, Tomislav Krističević, Špela Bogataj. Effects of Small-Sided Recreational Volleyball on Health Markers and Physical Fitness in Middle-Aged Men. International Journal of Environmental Research and Public Health. 2020; 17 (9):3021.
Chicago/Turabian StyleNebojša Trajković; Goran Sporiš; Tomislav Krističević; Špela Bogataj. 2020. "Effects of Small-Sided Recreational Volleyball on Health Markers and Physical Fitness in Middle-Aged Men." International Journal of Environmental Research and Public Health 17, no. 9: 3021.
Studies dealing with the effectiveness of the Fédération Internationale de Football Association (FIFA) 11+ prevention program to improve performance outcomes in children aged < 14 years are limited. This study aimed to point out the effects of the application of short-term FIFA 11+ warm-up program on physical performance in young football players. Participants were 36 youth male football players, divided into a FIFA 11+ (n = 19; mean (SD) age: 11.15 (0.79) y) and a control group (CG: n = 17; age: 10.87 (0.8) y) and trained for 4 weeks. Before and after the training period, standing long jump performance, agility, repeated sprint ability, sit and reach, and “30–15” intermittent fitness tests were assessed. A mixed ANOVA showed significant differences between the groups in the standing long jump test (FIFA 11+: 5.6% vs. CG: −1.9%) in favor of FIFA 11+ over CG. Additionally, the FIFA 11+ performance of the Illinois agility test was significantly better compared to the CG performance (FIFA 11+: −1.9% vs. CG: 0.03%). The main findings of this study suggest that just 4 weeks of implementation of the FIFA 11+ improves physical performance compared with traditional warm-up routines in young soccer players.
Nebojša Trajković; Marko Gušić; Slavko Molnar; Draženka Mačak; Dejan M. Madić; Špela Bogataj. Short-Term FIFA 11+ Improves Agility and Jump Performance in Young Soccer Players. International Journal of Environmental Research and Public Health 2020, 17, 2017 .
AMA StyleNebojša Trajković, Marko Gušić, Slavko Molnar, Draženka Mačak, Dejan M. Madić, Špela Bogataj. Short-Term FIFA 11+ Improves Agility and Jump Performance in Young Soccer Players. International Journal of Environmental Research and Public Health. 2020; 17 (6):2017.
Chicago/Turabian StyleNebojša Trajković; Marko Gušić; Slavko Molnar; Draženka Mačak; Dejan M. Madić; Špela Bogataj. 2020. "Short-Term FIFA 11+ Improves Agility and Jump Performance in Young Soccer Players." International Journal of Environmental Research and Public Health 17, no. 6: 2017.
Although neuromuscular training (NMT) emphasizes injury prevention training, there is little information about its effects on performance in young athletes. This study aimed to investigate the effects of eight-weeks NMT on motor competence and physical performance in 10- to 12-year-old female volleyball players. Sixty-six participants (mean ± SD; 11.05 ± 0.72 years) were randomized into either the NMT group (NTG; n = 32) or control group (CON; n = 34). Sprint on 10-m, modified T-test, plank, vertical jump, and medicine ball throw tests were used to assess the physical performance. The Körperkoordinationstest für Kinder (KTK) was used to assess the subjects’ motor competence. The NMT was performed twice a week during the first 30 min of each regularly scheduled 90-minute volleyball training. Participants in the CON group attended only their regular volleyball training. A significant group x time interaction was found for Motor Quotient KTK (MQKTK) (p < 0.001), KTK lateral jumps (p < 0.001), and KTK shifting platforms (p < 0.01). There was a significant interaction for modified T-test results (p < 0.001) and vertical jump (p = 0.04). No change was observed in both groups for plank performance (p > 0.05). The NMT promoted significant gains in motor competence and physical performance in youth female volleyball players.
Nebojša Trajković; Špela Bogataj. Effects of Neuromuscular Training on Motor Competence and Physical Performance in Young Female Volleyball Players. International Journal of Environmental Research and Public Health 2020, 17, 1755 .
AMA StyleNebojša Trajković, Špela Bogataj. Effects of Neuromuscular Training on Motor Competence and Physical Performance in Young Female Volleyball Players. International Journal of Environmental Research and Public Health. 2020; 17 (5):1755.
Chicago/Turabian StyleNebojša Trajković; Špela Bogataj. 2020. "Effects of Neuromuscular Training on Motor Competence and Physical Performance in Young Female Volleyball Players." International Journal of Environmental Research and Public Health 17, no. 5: 1755.
There is a lack of agreement on the efficacy of different exercise interventions in hemodialysis patients. We analyzed which exercise type is the most beneficial in terms of functional fitness and inflammation. A literature search of seven databases yielded 33 studies that met the inclusion criteria. Compared with an inactive control, the intervention group showed moderate effects (ES = 0.74; 95% CI 0.35 to 1.14; p < 0.001; and ES = 0.70; 95% CI 0.39 to 1.01; p < 0.001; respectively) on functional capacity (six-minute walk test) and oxygen consumption. Small nonsignificant effects were observed for aerobic (ES = −0.36; 95% CI −0.85 to 0.13; p = 0.154) and resistance (ES = −0.44; 95% CI −1.07 to 0.19; p = 0.169) training types, whereas moderate effects were found for combined (ES = −0.69; 95% CI −1.47 to 0.10; p = 0.088) training type based on a 10-repetition sit-to-stand test. Further, large and small effects were observed for aerobic (ES = −1.21; 95% CI −1.94 to −0.49; p = 0.001) and resistance training (ES = −0.54; 95% CI −0.90 to −0.17; p = 0.004) types on C-reactive protein. Overall, the results showed the numerically largest effect sizes for combined types compared to solely aerobic or resistance training types, with the differences between training types not reaching statistical significance. There was a significant modifying impact of age, training frequency, and session duration on performance and inflammatory outcomes.
Špela Bogataj; Maja Pajek; Jernej Pajek; Jadranka Buturović Ponikvar; Armin H. Paravlic. Exercise-Based Interventions in Hemodialysis Patients: A Systematic Review with a Meta-Analysis of Randomized Controlled Trials. Journal of Clinical Medicine 2019, 9, 43 .
AMA StyleŠpela Bogataj, Maja Pajek, Jernej Pajek, Jadranka Buturović Ponikvar, Armin H. Paravlic. Exercise-Based Interventions in Hemodialysis Patients: A Systematic Review with a Meta-Analysis of Randomized Controlled Trials. Journal of Clinical Medicine. 2019; 9 (1):43.
Chicago/Turabian StyleŠpela Bogataj; Maja Pajek; Jernej Pajek; Jadranka Buturović Ponikvar; Armin H. Paravlic. 2019. "Exercise-Based Interventions in Hemodialysis Patients: A Systematic Review with a Meta-Analysis of Randomized Controlled Trials." Journal of Clinical Medicine 9, no. 1: 43.