Results Strong evidence was found for an inverse association between MF and total and central adiposity , and CVD and metabolic risk factors .
Strong evidence was also found for a positive association between MF and bone health and self-esteem .
Conclusion The findings of this review highlight the importance of developing MF in youth for a number of health-related benefits
Background Physical fitness during childhood and adolescence has been identified as an important determinant of current and future health status .
While research has traditionally focused on the association between cardio-respiratory fitness and health outcomes , the association between muscular fitness ( MF ) and health status has recently received increased attention .
Objective The aim of this systematic review and meta- analysis was to evaluate the potential physiological and psychological benefits associated with MF among children and adolescents .
The effect of high-intensity progressive resistance training on adiposity in children: a randomized controlled trial
Background : High-intensity progressive resistance training ( PRT ) improves adiposity and metabolic risk in adults , but has not been investigated in children within a r and omized controlled trial ( RCT ) . Objective : We hypothesized that high-intensity PRT ( 8 weeks , twice a week ) would decrease central adiposity in children , as assessed via waist circumference . Methods Design / Setting / Participants : Concealed r and omization stratified by age and gender was used to allocate rural New Zeal and school students to the wait-list control or PRT group . Intervention : Participants were prescribed two sets ( eight repetitions per set ) of 11 exercises targeting all the major muscle groups at high intensity . Primary Outcome : Waist circumference ; secondary outcomes included whole body fat , muscular fitness ( one repetition maximum ) , cardiorespiratory fitness ( peak oxygen consumption during a treadmill test ) , lipids , insulin sensitivity and fasting glucose . Results : Of the 78 children ( 32 girls and 46 boys ; mean age 12.2(1.3 ) years ) , 51 % were either overweight ( 33 % ) or obese ( 18 % ) . High-intensity PRT significantly improved waist circumference ( mean change PRT −0.8 ( 2.2 ) cm vs + 0.5 ( 1.7 ) cm control ; F=7.59 , P=0.008 ) , fat mass ( mean change PRT + 0.2 ( 1.4 ) kg vs + 1.0 ( 1.2 ) kg control ; F=6.00 , P=0.017 ) , percent body fat ( mean change PRT –0.3 (1.8)% vs + 1.2 (2.1)% control ; F=9.04 , P=0.004 ) , body mass index ( mean change PRT −0.01 ( 0.8 ) kg m−2 vs + 0.4 ( 0.7 ) kg m−2 control ; F=6.02 , P=0.017 ) , upper body strength ( mean change PRT+11.6(6.1 ) kg vs + 2.9(3.7 ) kg control ; F=48.6 , P<0.001 ) and lower body strength ( mean change PRT + 42.9(26.6 ) kg vs + 28.5(26.6 ) kg control ; F=4.72 , P=0.034 ) compared to the control group . Waist circumference decreased the most in those with the greatest baseline relative strength ( r=−0.257 , P=0.036 ) , and greatest relative ( r=−0.400 , P=0.001 ) and absolute ( r=0.340 , P=0.006 ) strength gains during the intervention . Conclusion : Isolated high-intensity PRT significantly improves central and whole body adiposity in association with muscle strength in normal-weight and overweight children . The clinical relevance and sustainability of these changes in adiposity should be addressed in future long-term studies
Results Strong evidence was found for an inverse association between MF and total and central adiposity , and CVD and metabolic risk factors .
Strong evidence was also found for a positive association between MF and bone health and self-esteem .
Conclusion The findings of this review highlight the importance of developing MF in youth for a number of health-related benefits
Background Physical fitness during childhood and adolescence has been identified as an important determinant of current and future health status .
While research has traditionally focused on the association between cardio-respiratory fitness and health outcomes , the association between muscular fitness ( MF ) and health status has recently received increased attention .
Objective The aim of this systematic review and meta- analysis was to evaluate the potential physiological and psychological benefits associated with MF among children and adolescents .