Results Physical activity was associated with numerous health benefits .
The dose-response relations observed in observational studies indicate that the more physical activity , the greater the health benefit .
Results from experimental studies indicate that even modest amounts of physical activity can have health benefits in high-risk youngsters ( e.g. , obese ) .
Vigorous intensity activities may provide even greater benefit .
Aerobic-based activities had the greatest health benefit , other than for bone health , in which case high-impact weight bearing activities were required .
Some of the health benefits can be achieved through an average of 30 minutes per day . [
Level 2 , Grade A ] .
Background The purpose was to : 1 ) perform a systematic review of studies examining the relation between physical activity , fitness , and health in school-aged children and youth , and 2 ) make recommendations based on the findings .
Augmented trochanteric bone mineral density after modified physical education classes: a randomized school-based exercise intervention study in prepubescent and early pubescent children.
BACKGROUND Of the few exercise intervention studies focusing on pediatric population s , none have confined the intervention to the scheduled physical education curriculum . OBJECTIVE To examine the effect of an 8-month school-based jumping program on the change in areal bone mineral density ( aBMD ) , in grams per square centimeter , of healthy third- and fourth- grade children . STUDY DESIGN Ten elementary schools were r and omized to exercise ( n = 63 ) and control groups ( n = 81 ) . Exercise groups did 10 tuck jumps 3 times weekly and incorporated jumping , hopping , and skipping into twice weekly physical education classes . Control groups did regular physical education classes . At baseline and after 8 months of intervention , we measured aBMD and lean and fat mass by dual-energy x-ray absorptiometry ( Hologic QDR-4500 ) . Calcium intake , physical activity , and maturity were estimated by question naire . RESULTS The exercise group showed significantly greater change in femoral trochanteric aBMD ( 4.4 % vs 3.2 % ; P < .05 ) . There were no group differences at other sites . Results were similar after controlling for covariates ( baseline aBMD change in height , change in lean , calcium , physical activity , sex , and ethnicity ) in hierarchical regression . CONCLUSIONS An easily implemented school-based jumping intervention augments aBMD at the trochanteric region in the prepubertal and early pubertal skeleton
Results Physical activity was associated with numerous health benefits .
The dose-response relations observed in observational studies indicate that the more physical activity , the greater the health benefit .
Results from experimental studies indicate that even modest amounts of physical activity can have health benefits in high-risk youngsters ( e.g. , obese ) .
Vigorous intensity activities may provide even greater benefit .
Aerobic-based activities had the greatest health benefit , other than for bone health , in which case high-impact weight bearing activities were required .
Some of the health benefits can be achieved through an average of 30 minutes per day . [
Level 2 , Grade A ] .
Background The purpose was to : 1 ) perform a systematic review of studies examining the relation between physical activity , fitness , and health in school-aged children and youth , and 2 ) make recommendations based on the findings .