Relationship between exercise capacity and heart rate variability: Supine and in response to an orthostatic stressor

Abstract The study investigated whether supine-measured HRV indicators, and/or HRV indicators measured during orthostatic stress are related to conventional measures of exercise and performance ability such as VO2max . Only two significant correlations ( p < 0.05) out of 30 tests were found betwe...

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Bibliographic Details
Published in:Autonomic neuroscience 2009-12, Vol.151 (2), p.186-188
Main Authors: Grant, Catharina C, Clark, Jimmy R, van Rensburg, Dina C. Janse, Viljoen, Margaretha
Format: Article
Language:English
Subjects:
Adolescent
Adult
Advanced Basic Science
Autonomic Nervous System - physiology
Biological and medical sciences
Blood Vessels - innervation
Blood Vessels - physiology
Brain - physiology
Exercise Test
Exercise Tolerance - physiology
Fundamental and applied biological sciences. Psychology
Heart - innervation
Heart - physiology
Heart Rate - physiology
Heart rate variability
Humans
Male
Medical Education
Orthostatic Intolerance - physiopathology
Oxygen Consumption - physiology
Peripheral nervous system. Autonomic nervous system. Neuromuscular transmission. Ganglionic transmission. Electric organ
Physical Exertion - physiology
Physical Fitness - physiology
Posture - physiology
Stress, Physiological - physiology
Stressor
Supine
Supine Position - physiology
Vertebrates: nervous system and sense organs
VO 2max
Young Adult
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Summary:Abstract The study investigated whether supine-measured HRV indicators, and/or HRV indicators measured during orthostatic stress are related to conventional measures of exercise and performance ability such as VO2max . Only two significant correlations ( p < 0.05) out of 30 tests were found between supine-determined HRV indicators and conventional measures. In contrast, fifteen of the 30 relationships calculated during orthostatic stress were significant. Relationships were at best low to moderate (0.2 < |corr| < 0.4). As expected, the relationships obtained during orthostatic stress were reversed from that obtained in the supine position. In summary, although HRV indicators are related to cardiovascular fitness, correlations between VO2max and these parameters are found only under very specific conditions. HRV parameters explain very little of the variance in VO2max . In addition, estimating the exercise capacity from HRV indicators requires experience and extreme caution.
ISSN:1566-0702
1872-7484
DOI:10.1016/j.autneu.2009.08.015