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Related Concept Videos

Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
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The Use of Thermal Infra-Red Imaging to Detect Delayed Onset Muscle Soreness
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Relationship between post-exercise heart rate variability and skinfold thickness.

Michael R Esco1, Henry N Williford

  • 1Human Performance Laboratory, Auburn University at Montgomery, P.O. Box 244023, Montgomery, AL 36124-4023 USA.

Springerplus
|September 7, 2013
PubMed
Summary

Greater sum of skinfold thickness (SF) in men is linked to a slower recovery of heart rate variability (HRV) after maximal exercise. This association persists independently of body mass index (BMI) and maximal oxygen consumption (VO2max).

Keywords:
Autonomic nervous systemBody compositionCardiovascularExerciseFitness

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Area of Science:

  • Exercise Physiology
  • Cardiovascular Health
  • Body Composition Analysis

Background:

  • Heart rate variability (HRV) reflects autonomic nervous system function and recovery post-exercise.
  • Body composition, particularly fat distribution indicated by skinfold thickness (SF), may influence physiological responses to exercise.
  • Understanding factors affecting post-exercise HRV recovery is crucial for assessing fitness and recovery.

Purpose of the Study:

  • To investigate if skinfold thickness (SF) groupings correlate with differences in post-exercise heart rate variability (HRV).
  • To determine the influence of SF, body mass index (BMI), and maximal oxygen consumption (VO2max) on post-exercise HRV variation.
  • To examine the relationship between SF and the recovery kinetics of HRV following maximal exertion.

Main Methods:

  • Fifty-four men underwent maximal exercise testing to determine VO2max.
  • Measurements included SF and BMI; HRV was assessed pre-exercise and at 0-5 and 25-30 minutes post-exercise.
  • Frequency domain analysis of HRV (HF power, LF:HF ratio) was performed, with participants grouped by SF relative to the sample mean.

Main Results:

  • Groupings based on SF showed significant differences in pre-exercise and late post-exercise HRV (HF and LF:HF ratios).
  • Higher SF was associated with a delayed return of HRV to baseline levels post-exercise, independent of VO2max and BMI.
  • SF emerged as the sole significant predictor of post-exercise HRV parameters.

Conclusions:

  • Increased sum of skinfold thickness (SF) is associated with a blunted or delayed recovery of heart rate variability (HRV) after maximal exercise.
  • The relationship between SF and post-exercise HRV is independent of cardiorespiratory fitness (VO2max) and overall weight status (BMI).
  • Skinfold thickness may serve as a relevant indicator for assessing autonomic recovery capacity following strenuous physical activity.