What is the role of insufficient cardiorespiratory fitness in weight gain and the risk of being overweight in children aged 6-15 years?

Updated: Feb 20, 2019
  • Author: Steven M Schwarz, MD, FAAP, FACN, AGAF; Chief Editor: Jatinder Bhatia, MBBS, FAAP  more...
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Answer

McGavock et al demonstrated that low cardiorespiratory fitness and reductions in fitness over time are significantly associated with weight gain and the risk of being overweight in children aged 6-15 years. [4] Analysis on a cohort of 902 schoolchildren showed higher waist circumference and disproportionate weight gain over a 12-month follow-up period in those children with low cardiorespiratory fitness. The 12-month risk of overweight classification was 3.5-fold higher in youth with low cardiorespiratory fitness, relative to fit peers. [4] Reductions in cardiorespiratory fitness were significantly and independently associated with increasing BMI. Low levels of cardiorespiratory fitness have also been associated with elevated depressive symptoms in obese adolescents. [5]


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