These findings suggest that AST should be promoted to increase PA levels in children and adolescents and that cycling to/ from school is associated with increased cardiovascular fitness .
BACKGROUND The impact of  active school transport ( AST )  on daily physical activity ( PA ) levels , body composition and cardiovascular fitness remains unclear .
The Walking School Bus and Children's Physical Activity: A Pilot Cluster Randomized Controlled Trial
OBJECTIVE : To evaluate the impact of a “ walking school bus ” program on  children 's rates of active commuting to school and physical activity . METHODS : We conducted a pilot cluster r and omized controlled trial among 4th- grade rs from 8 schools in Houston , Texas ( N = 149 ) . R and om allocation to treatment or control conditions was at the school level . Study staff walked with children to and from school up to 5 days/week . Outcomes were measured the week before ( time 1 ) and during weeks 4 and 5 of the intervention ( time 2 ) . The main outcome was the weekly rate of active commuting , and a secondary outcome was moderate-to-vigorous physical activity . Covariates included sociodemographics , distance from home to school , neighborhood safety , child BMI z score , parent self-efficacy/ outcome expectations , and child self-efficacy for active commuting . A mixed-model repeated measures regression accounted for clustering by school , and stepwise procedures with backward elimination of nonsignificant covariates were used to identify significant predictors . RESULTS : Intervention children increased active commuting ( mean ± SD ) from 23.8 % ± 9.2 % ( time 1 ) to 54 % ± 9.2 % ( time 2 ) , whereas control subjects decreased from 40.2 % ± 8.9 % ( time 1 ) to 32.6 % ± 8.9 % ( time 2 ) ( P < .0001 ) . Intervention children increased their minutes of daily moderate-to-vigorous physical activity from 46.6 ± 4.5 ( time 1 ) to 48.8 ± 4.5 ( time 2 ) , whereas control children decreased from 46.1 ± 4.3 ( time 1 ) to 41.3 ± 4.3 ( time 2 ) ( P = .029 ) . CONCLUSIONS : The program improved children 's active commuting to school and daily moderate-to-vigorous physical activity
These findings suggest that AST should be promoted to increase PA levels in children and adolescents and that cycling to/ from school is associated with increased cardiovascular fitness .
BACKGROUND The impact of  active school transport ( AST )  on daily physical activity ( PA ) levels , body composition and cardiovascular fitness remains unclear .