Overall , total PA was favourably associated with physical , psychological/social , and cognitive health indicators .
Relationships were more consistent and robust for higher ( e.g. , MVPA ) versus lower ( e.g. , LPA ) intensity PA .
All patterns of activity ( sporadic , bouts , continuous ) provided benefit .
LPA was favourably associated with cardiometabolic biomarkers ; data were scarce for other outcomes .
These findings continue to support the importance of at least 60 min/day of MVPA for disease prevention and health promotion in children and youth , but also highlight the potential benefits of LPA and total PA .
Moderate-to-vigorous physical activity ( MVPA ) is essential for disease prevention and health promotion .
Emerging evidence suggests other intensities of physical activity ( PA ) , including light-intensity activity ( LPA ) , may also be important , but there has been no rigorous evaluation of the evidence .
The purpose of this systematic review was to examine the relationships between objective ly measured PA ( total and all intensities ) and health indicators in school-aged children and youth .
Online data bases were search ed for peer- review ed studies that met the a priori inclusion criteria : population ( apparently healthy , aged 5 - 17 years ) , intervention/exposure/comparator ( volumes , duration s , frequencies , intensities , and patterns of objective ly measured PA ) , and outcome ( body composition , cardiometabolic biomarkers , physical fitness , behavioural conduct/pro-social behaviour , cognition/academic achievement , quality of life/well-being , harms , bone health , motor skill development , psychological distress , self-esteem ) .
Thin adolescents: Who are they? What do they do? Socio-demographic and use-of-time characteristics.
OBJECTIVES Examine : ( 1 ) the anthropometric , socio-demographic and use-of-time characteristics of thin adolescents , and ( 2 ) compare these characteristics to other weight status categories . METHODS Data were from the 2007 National Children 's Nutrition and Physical Activity Survey which collected data on a r and om sample of 2200 9 to 16 year old Australians from February to August 2007 . Seven socio-demographic variables , anthropometric data ( height and weight were measured ) and nine use-of-time variables were used , and compared across the weight status categories .  Physical activity  was measured using pedometers and the Multimedia Activity Recall for Children and Adults . RESULTS 5.3 % of adolescents were classified as thin , a percentage which did not significantly vary by age , sex , indigenous status , household income , education level or family structure . Relative to other adolescents , thin adolescents were shorter and lighter . Thin adolescents were less active than their normal weight peers , but walked further and accumulated significantly less screen and TV time than obese adolescents . CONCLUSION Thin adolescents were found in similar proportions across all socio-demographic b and s. Thin adolescents recorded similar physical activity levels to their normal weight peers , but were more active than obese adolescents . The findings from the study support in part the theory of thinness related developmental delay
Overall , total PA was favourably associated with physical , psychological/social , and cognitive health indicators .
Relationships were more consistent and robust for higher ( e.g. , MVPA ) versus lower ( e.g. , LPA ) intensity PA .
All patterns of activity ( sporadic , bouts , continuous ) provided benefit .
LPA was favourably associated with cardiometabolic biomarkers ; data were scarce for other outcomes .
These findings continue to support the importance of at least 60 min/day of MVPA for disease prevention and health promotion in children and youth , but also highlight the potential benefits of LPA and total PA .
Moderate-to-vigorous physical activity ( MVPA ) is essential for disease prevention and health promotion .
Emerging evidence suggests other intensities of physical activity ( PA ) , including light-intensity activity ( LPA ) , may also be important , but there has been no rigorous evaluation of the evidence .
The purpose of this systematic review was to examine the relationships between objective ly measured PA ( total and all intensities ) and health indicators in school-aged children and youth .
Online data bases were search ed for peer- review ed studies that met the a priori inclusion criteria : population ( apparently healthy , aged 5 - 17 years ) , intervention/exposure/comparator ( volumes , duration s , frequencies , intensities , and patterns of objective ly measured PA ) , and outcome ( body composition , cardiometabolic biomarkers , physical fitness , behavioural conduct/pro-social behaviour , cognition/academic achievement , quality of life/well-being , harms , bone health , motor skill development , psychological distress , self-esteem ) .