Maximal oxygen uptake and concentric isokinetic muscle strength in pubertal football trained and untrained boys of the same biological age

Mandroukas, Athanasios; Heller, Jan

doi:10.14712/23366052.2019.3

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…The objective determination of this association supported the notion that engaging children in specific sport activities, such as football, track and field, swimming, and basketball, increases their levels of cardiorespiratory fitness. These findings broadly support the results of other studies [ 22 , 23 , 24 , 25 ]. Furthermore, higher training frequency had an additive effect.…”

Section: Discussionsupporting

confidence: 93%

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Predicting VO2max in Children and Adolescents Aged between 6 and 17 Using Physiological Characteristics and Participation in Sport Activities: A Cross-Sectional Study Comparing Different Regression Models Stratified by Gender

et al. 2022

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Background: The aim of this study is to use different regression models to capture the association between cardiorespiratory fitness VO2max (measured in mL/kg/min) and somatometric characteristics and sports activities and making better predictions. Methods: multiple linear regression (MLR), quantile regression (QR), ridge regression (RR), support vector regression (SVR) with three different kernels, artificial neural networks (ANNs), and boosted regression trees (RTs) were compared to explain and predict VO2max and to choose the best performance model. The sample consisted of 4908 children (2314 males and 2594 females) aged between 6 and 17. Cardiorespiratory fitness was assessed by the 20 m maximal multistage shuttle run test and maximal oxygen uptake (VO2max) was calculated. Welch t-tests, Mann–Whitney-U tests, X2 tests, and ANOVA tests were performed. The performance measures were root mean square error (RMSE), mean absolute error (MAE), and coefficient of determination (R2). All analyses were stratified by gender. Results: A comparison of the statistical indices for both the predicted and actual data indicated that in boys, the MLR model outperformed all other models in all indices, followed by the linear SVR model. In girls, the MLR model performed better than the other models in R2 but was outperformed by SVR-RBF in terms of RMSE and MAE. The overweight and obesity categories in both sexes (p < 0.001) and maternal prepregnancy obesity in girls had a significant negative effect on VO2max. Age, weekly football training, track and field, basketball, and swimming had different positive effects based on gender. Conclusion: The MLR model showed remarkable performance against all other models and was competitive with the SVR models. In addition, this study’s data showed that changes in cardiorespiratory fitness were dependent, to a different extent based on gender, on BMI category, weight, height, age, and participation in some organized sports activities. Predictors that are not considered modifiable, such as gender, can be used to guide targeted interventions and policies.

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Section: Discussionsupporting

confidence: 93%

“…Many studies have indicated that physical activity is relatively well-correlated with aerobic capacity [ 17 , 18 , 19 , 20 ]. Moreover, only a few studies have taken into account the relationship between different sports activities and VO 2 max [ 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Predicting VO2max in Children and Adolescents Aged between 6 and 17 Using Physiological Characteristics and Participation in Sport Activities: A Cross-Sectional Study Comparing Different Regression Models Stratified by Gender

et al. 2022

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“…Seven cases were on the left side, and 13 were on the right--side. 3 There were 11 males and 9 females. The average age was 25.3 years, the height was 166.4±5.0cm, the weight was 64.7±4.8kg, and the disease course was 28.6±18.3 months.…”

Section: Research Objectmentioning

confidence: 99%

Isokinetic Muscle Strength Testing and Technology of Training in Sports Medicine

2022

Rev Bras Med Esporte

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Introduction Current research in sports medicine on muscles adjacent to joints in patients with joint instability focuses on functional instability. However, few studies on muscle strength in the muscles adjacent to the joints in typical patients. Objective This study tests the changes in isokinetic muscle strength in flexion-extension muscle groups in common subjects’ knees and elbows. Methods Randomly selected ordinary citizens to perform isokinetic muscle strength testing with grip strength, explosive pedaling force, and elbow and knee joint movement speeds of 60°/s. Results The single work of the normal knee flexors and extensors decreases with test speed at different movement speeds. Conclusion The grip strength test and isokinetic pedaling test can be used as simple muscle strength tests for fitness monitoring. Evidence Level II; Therapeutic Studies - Investigating the result.

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Predictive approach of health indicators from the physical activity habits of active youth

Moreno-Gonzalez,

Manzano-Carrasco,

Felipe

et al. 2024

Sci Rep

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The aim of this study is to analyse the relationship between sport modalities practiced, physical fitness, body composition, and healthy habits in an active young population, using a statistical model for prediction. A total of 2255 (1528 boys and 727 girls) children and adolescents aged 6–17 years old who were involved in extracurricular sports from rural areas of Spain participated. Physical fitness was assessed through validated field test and, body composition was determinated using bioelectrical impedance analysis. Adherence to the Mediterranean diet was assessed by KIDMED questionnaire. The general sport variable was significant in VO2max when comparing the invasion and combat modalities to the reference level (court/net). The sex and age variables revealed significant differences in all physical fitness and body composition parameters. Health parameters, such as hours of additional practice, adherence to the Mediterranean diet, and previous experience, showed significant differences. The study concludes that the sport modality variables of training, sex, age, and maturational period have an impact on body composition and fitness parameters in this population. Therefore, by focusing on factors associated with lower values in health indicators, we can prevent health problems during adulthood, such as cardiorespiratory deficits.

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Maximal oxygen uptake and concentric isokinetic muscle strength in pubertal football trained and untrained boys of the same biological age

Cited by 3 publications

References 23 publications

Predicting VO2max in Children and Adolescents Aged between 6 and 17 Using Physiological Characteristics and Participation in Sport Activities: A Cross-Sectional Study Comparing Different Regression Models Stratified by Gender

Predicting VO2max in Children and Adolescents Aged between 6 and 17 Using Physiological Characteristics and Participation in Sport Activities: A Cross-Sectional Study Comparing Different Regression Models Stratified by Gender

Isokinetic Muscle Strength Testing and Technology of Training in Sports Medicine

Predictive approach of health indicators from the physical activity habits of active youth

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