Background Xinjiang is an economically underdeveloped area in China, but the obesity rate
of children and adolescents is increasing year by year. Physical fitness and body mass …

Background Physical fitness is strongly associated with health. Despite the extent of the
nutritional transition from food scarcity to diets high in fats and refined carbohydrates that …

Previous studies in team sports have not reported evidence regarding the relative age effect
(RAE) in relation to the talent identification (TI) process in volleyball, which is organized and …

(1) Introduction: Regular physical activity (PA) is an important part of a healthy lifestyle for
children and adolescents. The aim of this study was to assess the impact of an increase in …

Background Bipedal hopping has the potential to detect subtle multiple sclerosis (MS)-
related impairments, especially among patients who “pass” typical movement tests. In this …

Reduced heart rate variability (HRV) is associated with overweight and obesity in adults.
However, little is known about this relationship in early childhood. We investigated the …

Objective To assess the association between body mass index (BMI) and physical fitness
index (PFI) among children and adolescents in Xinjiang Uyghur Autonomous Region …

Background To explore the cross‐sectional relationship between the body mass index (BMI)
and physical fitness index (PFI) of Chinese college students. Methods In total, 30 497 (male …

Objectives To assess the association between comprehensive physical fitness and high
blood pressure (HBP) among Chinese children and adolescents. Design National cross …

Introduction: To examine the geographical variation in change in the levels of physical
fitness from 2005 to 2014 among Chinese children and adolescents. Methods: A total of …