Question naires were the more predominant way to evaluate PA .
Most studies showed that PA promotes a protective effect against a higher BF gain .
CONCLUSION It was concluded that PA has a protective effect against BF with differences between the genders and according to the BF marker or measurement assessed ; higher intensity PA leads to a greater effect against BF gain in both genders ; and the maintenance or increase of PA level on BF observed through analysis of change in PA level yielded more consistent findings in the relation between PA and BF
BACKGROUND Physical activity ( PA ) practice has been inversely associated to body  fat ( BF ) and recommended as a way to reduce and prevent obesity .
The objective of this study was to conduct a systematic review on the association of  PA and BF in adolescence .
Adolescent skinfold thickness is a better predictor of high body fatness in adults than is body mass index: the Amsterdam Growth and Health Longitudinal Study.
BACKGROUND Body mass index ( BMI ) during adolescence is predictive of BMI at adult age . However , BMI can not distinguish between lean and fat body mass . Skinfold thickness may be a better predictor of body fatness . OBJECTIVE The objective of this study was to evaluate the relations between BMI and skinfold thickness during adolescence and body fatness during adulthood . DESIGN We included 168 men and 182 women from the Amsterdam Growth and Health Longitudinal Study , a prospect i ve study that conducted 8 measurements of BMI and skinfold thickness between 1976 and 2000 .  BMI and skinfold thickness during adolescence were analyzed in relation to adult body fatness measured at a mean age of 37 y with dual-energy X-ray absorptiometry . RESULTS None of the boys and 1.7 % of the girls were overweight at baseline , whereas the prevalence of high body fatness during adulthood was 29 % in men and 32 % in women . At the ages of 12 - 16 y , skinfold thickness was more strongly associated with adult body fatness than was BMI . Age-specific relative risks for a high level of adult body fatness varied between 2.3 and 4.0 in boys and between 2.1 and 4.3 in girls in the highest versus the lowest tertile of the sum of 4 skinfold thicknesses . For the highest tertile of BMI , the relative risk varied between 0.8 and 2.1 in boys and between 1.3 and 1.8 in girls . CONCLUSION Skinfold thickness during adolescence is a better predictor of high body fatness during adulthood than is BMI during adolescence
Question naires were the more predominant way to evaluate PA .
Most studies showed that PA promotes a protective effect against a higher BF gain .
CONCLUSION It was concluded that PA has a protective effect against BF with differences between the genders and according to the BF marker or measurement assessed ; higher intensity PA leads to a greater effect against BF gain in both genders ; and the maintenance or increase of PA level on BF observed through analysis of change in PA level yielded more consistent findings in the relation between PA and BF
BACKGROUND Physical activity ( PA ) practice has been inversely associated to body  fat ( BF ) and recommended as a way to reduce and prevent obesity .
The objective of this study was to conduct a systematic review on the association of  PA and BF in adolescence .