Key result
Body fatness was an independent predictor of one-minute heart rate recovery in boys but not girls, with combined fitness and fatness modestly predicting recovery variance (R2=3%).
Why the study?
While the prognostic value of delayed heart rate recovery after exercise is well documented, the relationship of aerobic fitness and fatness with heart rate recovery among youth is less clear.
Do aerobic fitness and body fatness predict one minute heart rate recovery after maximal exercise in adolescents?
Cross-Sectional (n=454)
Do aerobic fitness and body fatness predict one minute heart rate recovery after maximal exercise in adolescents?
Effect estimate: R2 3%
In Nigerian adolescents, body fatness is a better predictor of one-minute heart rate recovery than aerobic fitness in boys, though fit and healthy weight youth overall have the most favorable recovery profiles.
Should not yet change adolescent fitness assessment; leaves open sex-specific fatness effects on autonomic recovery.
BACKGROUND: Heart rate recovery is an independent risk factor for adverse cardiovascular events and overall mortality. While the prognostic value of delayed Heart rate recovery following cessation of exercise is well documented, relationship of aerobic fitness and fatness with heart rate recovery among youth is less clear. We hypothesized that a delayed fall in heart rate after a progressive aerobic cardiovascular endurance run (PACER) test might be due in part to the effects of fitness and overall adiposity.METHODS: A total of 454 adolescents (224 boys and 230 girls) ages 12 to 16 years were evaluated for fitness, body fatness, baseline heart rate and one minute recovery heart rate (HRR1) after a PACER test. The participants were further divided into fit-fat groups to assess the influence of both fitness and fatness on HRR1. Regression models assessing the associations of the independent variables with HRR1were conducted.RESULTS: Fatness was the only independent predictor of HRR1 in boys but not girls. Combined fitness and fatness modesty predicted HRR1 (R2=3%). One minute HRR scores varied by fit-fat groups, the fit/Healthy Weight group demonstrated the most favorable HRR1 recovery profiles while the unfit/overweight group showed the most adverse profiles.CONCLUSIONS: Body fatness but not aerobic fitness was a better predictor of HRR1 in boys but not girls. Youth with higher aerobic fitness and Healthy Weight had more favorable HRR1 profiles than their unfit/Overweight peers.
No takes yet. Share an insight, caveat, or question.
Musa et al. (2020) conducted a cross-sectional in Adolescents (n=454). Fitness and body fatness vs. Unfit/overweight peers was evaluated on One minute recovery heart rate (HRR1) after a PACER test (R2 3%). Body fatness was an independent predictor of one-minute heart rate recovery in boys but not girls, with combined fitness and fatness modestly predicting recovery variance (R2=3%).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: