However , total PA , sedentary behaviour , and different PA intensities were not associated with body mass index ( BMI ) or waist circumference .
Adiposity levels were lower among preschool children engaged in more ( moderate-to- ) vigorous PA compared with their peers , but no associations  between  PA and BMI or waist circumference were found
Evidence on the association between  physical activity ( PA ) and adiposity in young children is inconclusive .
A systematic review and meta-analyses were conducted to examine associations between accelerometer-derived PA and varying adiposity outcomes  in preschool children .
Differences in Aerobic Fitness and Lifestyle Characteristics in Preschoolers according to their Weight Status and Sports Club Participation
Objective : This study assesses differences in adiposity , aerobic fitness , and lifestyle characteristics in preschoolers according to their weight status and sports club ( SC ) participation . Method : As part of the Ballabeina study , 600 r and omly selected preschoolers ( mean age 5.1 ± 0.6 years ; 50.2 % girls ) were analyzed . Body composition was measured by bioelectrical impedance , aerobic fitness by the 20-meter shuttle run test , and physical activity by accelerometers . Eating habits , media use , and SC participation were assessed by question naires . Results : Overweight children ( Swiss national percentiles ) and children not participating in SC had both lower aerobic fitness and higher % body fat compared to their respective counterparts ( all p ≤ 0.028 ) . In addition , children not participating in SC were less physically active , had more media use , and ate less healthy compared to children participating in SC ( all p ≤ 0.023 ) . Controlling for parental sociocultural determinants attenuated differences in % body fat , in physical activity , and in eating habits . Conclusion : Aerobic fitness differs both according to weight status and SC participation in preschoolers . Furthermore , in view of the many differences in lifestyle behaviors , SC participation at this age could represent a more discriminatory indicator of healthy lifestyle characteristics than weight status
However , total PA , sedentary behaviour , and different PA intensities were not associated with body mass index ( BMI ) or waist circumference .
Adiposity levels were lower among preschool children engaged in more ( moderate-to- ) vigorous PA compared with their peers , but no associations  between  PA and BMI or waist circumference were found
Evidence on the association between  physical activity ( PA ) and adiposity in young children is inconclusive .
A systematic review and meta-analyses were conducted to examine associations between accelerometer-derived PA and varying adiposity outcomes  in preschool children .