METHODS The results of recent systematic review s are discussed and supplemented with relevant literature not included in these review s. PubMed was search ed for the years 2006 - 2011 for additional topics not sufficiently covered by the review s. RESULTS PA was associated with lower blood pressure and a healthier lipid blood profile in children .
The association was stronger when a composite risk factor score was analysed , and the associations between physical fitness and cardiovascular disease ( CVD ) risk factors were even stronger .
Muscle strength and endurance exercise each had an effect on blood lipids and insulin sensitivity even if the effect was smaller for muscle strength than for aerobic exercise .
New evidence suggests possible effects of PA  on C-reactive protein .
CONCLUSION There is accumulating evidence that PA can have beneficial effects on the risk factors of CVD in children .
BACKGROUND A number of recent systematic review s have result ed in changes in international recommendations for children 's participation in physical activity ( PA ) for health .
The World Health Authority ( WHO ) has recently released new recommendations .
The WHO still recommends 60 min of moderate to vigorous physical activity ( MVPA ) , but also emphasises that these minutes should be on top of everyday physical activities .
Everyday physical activities total around 30 min of MVPA in the quintile of the least active children , which means that the new recommendations constitute more activity in total compared with earlier recommendations .
OBJECTIVE To summarise evidence justifying new PA recommendation for cardiovascular health in children .
Lifestyle-only intervention attenuates the inflammatory state associated with obesity: a randomized controlled study in adolescents.
OBJECTIVES The primary goals were to underst and the relationship among the inflammatory factors , C-reactive protein ( CRP ) , interleukin-6 ( IL-6 ) , and fibrinogen , and indices of obesity in normoglycemic , insulin-resistant adolescents and to investigate the impact of a lifestyle-only intervention on these nontraditional risk factors for cardiovascular disease ( CVD ) . STUDY DESIGN R and omized controlled lifestyle-only intervention study in adolescents . Of the 21 adolescents studied , 15 obese subjects ( body mass index [ BMI ] = 37.6 + /- 3.3 kg/m 2 ) were r and omized to either a lifestyle intervention program or usual care .  The lean controls were studied only at baseline . Analysis of variance ( ANOVA ) for repeated measures was used to study intervention effect and t test , one-way ANOVA , and discriminant function analysis for baseline comparisons . RESULTS The intervention group maintained weight , whereas the control group gained weight ( P = .02 ) . A redistribution of body composition and a decrease in insulin resistance were observed . Elevated circulating concentrations of CRP , fibrinogen , and IL-6 were significantly reduced ( all P < or=.02 ) in response to intervention , but not in controls . CONCLUSIONS Modest lifestyle-only change in previously sedentary obese adolescents redistributes the parameters of body composition in the absence of weight loss and reverses , at least in part , the inflammatory state in association with an improvement of insulin resistance
METHODS The results of recent systematic review s are discussed and supplemented with relevant literature not included in these review s. PubMed was search ed for the years 2006 - 2011 for additional topics not sufficiently covered by the review s. RESULTS PA was associated with lower blood pressure and a healthier lipid blood profile in children .
The association was stronger when a composite risk factor score was analysed , and the associations between physical fitness and cardiovascular disease ( CVD ) risk factors were even stronger .
Muscle strength and endurance exercise each had an effect on blood lipids and insulin sensitivity even if the effect was smaller for muscle strength than for aerobic exercise .
New evidence suggests possible effects of PA  on C-reactive protein .
CONCLUSION There is accumulating evidence that PA can have beneficial effects on the risk factors of CVD in children .
BACKGROUND A number of recent systematic review s have result ed in changes in international recommendations for children 's participation in physical activity ( PA ) for health .
The World Health Authority ( WHO ) has recently released new recommendations .
The WHO still recommends 60 min of moderate to vigorous physical activity ( MVPA ) , but also emphasises that these minutes should be on top of everyday physical activities .
Everyday physical activities total around 30 min of MVPA in the quintile of the least active children , which means that the new recommendations constitute more activity in total compared with earlier recommendations .
OBJECTIVE To summarise evidence justifying new PA recommendation for cardiovascular health in children .