AI Article Synopsis

  • Adolescent obesity negatively impacts heart and lung function, and this study investigates two exercise methods, moderate-intensity continuous training (MICT) and high-intensity interval training (HIIT), to see which is more beneficial.
  • 44 obese adolescent boys participated, dividing into HIIT and MICT groups for an 8-week training program, measuring outcomes such as VO (peak oxygen consumption), vascular elasticity, and heart rate variability.
  • Results showed both exercise types improved VO equally, but HIIT produced significantly better outcomes for endothelial function and vago-sympathetic balance compared to MICT.

Article Abstract

Adolescent obesity can impair cardiopulmonary function, vascular elasticity, endothelial function, and vago-sympathetic balance. While moderate-intensity continuous training (MICT) benefits cardiovascular health in obese adolescents, the effects of high-intensity interval training (HIIT) are less understood. We hypothesize that HIIT may be more effective than MICT in improving VOpeak, vascular elasticity, endothelial function, and vago-sympathetic balance in obese adolescent boys. Forty four participants were randomly assigned to the HIIT (10 × 1-min at 85%-95% peak HR, intersperse with 2-min active recovery at 60%-70% peak HR) or MICT (35 min at 65%-75% peak HR) for an 8-week program. The primary outcome measured was the change in VO with secondary outcomes including brachial-ankle pulse wave velocity (baPWV), flow-mediated dilation (FMD), and heart rate variability (HRV). Forty four adolescent boys with obesity (age, 14 ± 1 years old, body mass index, 31.6 ± 1.3 kg/m) were enrolled and 43 (97.73%) completed the 8-week exercise. No significant difference of VO was found between the HIIT and MICT group (p = 0.243). There was no significant difference of baPWV between the groups (p = 0.789). Change in FMD% was significantly higher in the HIIT group compared to the MICT group (p < 0.001). The Change in HRV-high frequency (HRV-HF; p = 0.009) and HRV-low frequency/high frequency (HRV-LF/HF; p = 0.035) was significantly higher in the HIIT group compared to the MICT group. Among adolescent boys with obesity, 8-week HIIT and MICT had similar effects on improving VO. HIIT may be superior to MICT to improve endothelial function and vago-sympathetic balance.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11621380PMC
http://dx.doi.org/10.1002/ejsc.12207DOI Listing

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