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Conducting Maximal and Submaximal Endurance Exercise Testing to Measure Physiological and Biological Responses to Acute Exercise in Humans
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Autonomic function responses to training: Correlation with body composition changes.

Ye Tian1, Chuanye Huang2, Zihong He1

  • 1China Institute of Sport Science, Beijing, China.

Physiology & Behavior
|August 9, 2015
PubMed
Summary
This summary is machine-generated.

Individualized exercise training improved autonomic function and body composition. Changes in heart rate variability (HRV) during exercise predict fat loss, indicating HRV as a marker for training adaptations.

Keywords:
Body compositionHeart rate variabilityPeak oxygen uptake

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Area of Science:

  • Exercise Physiology
  • Autonomic Nervous System Function
  • Body Composition Analysis

Background:

  • The relationship between autonomic function and adiposity remains unclear.
  • Resting heart rate variability (HRV) reflects autonomic nervous system activity.
  • Understanding HRV's role in exercise adaptation is crucial for managing obesity.

Purpose of the Study:

  • To investigate if changes in resting heart rate variability (HRV) can predict body composition changes.
  • To assess the impact of individualized exercise training on HRV and body composition.

Main Methods:

  • 117 sedentary overweight/obese adults participated in a 16-week individualized high-intensity exercise intervention or control group.
  • Resting HRV, body composition, and peak oxygen uptake (VO2peak) were measured at baseline and post-intervention.
  • Intervention group trained at 85-100% of ventilatory threshold (Thvent).

Main Results:

  • Exercise training significantly improved HRV, body composition, and VO2peak compared to the control group.
  • Changes in HRV correlated significantly with improvements in body composition and VO2peak.
  • Greater HRV changes were associated with greater reductions in total and central body fat.

Conclusions:

  • Individualized aerobic-based exercise effectively improves autonomic function and resting HRV.
  • Resting HRV responses to aerobic training serve as a potential indicator of exercise training adaptations.
  • HRV changes can predict improvements in body composition, particularly fat loss.