Document Detail

Effects of moderate and heavy endurance exercise on nocturnal HRV.
MedLine Citation:
PMID:  20419617     Owner:  NLM     Status:  MEDLINE    
This study examined the effects of endurance exercise on nocturnal autonomic modulation. Nocturnal R-R intervals were collected after a rest day, after a moderate endurance exercise and after a marathon run in ten healthy, physically active men. Heart rate variability (HRV) was analyzed as a continuous four-hour period starting 30 min after going to bed for sleep. In relation to average nocturnal heart rate after rest day, increases to 109+/-6% and 130+/-11% of baseline were found after moderate endurance exercise and marathon, respectively. Standard deviation of R-R intervals decreased to 90+/-9% and 64+/-10%, root-mean-square of differences between adjacent R-R intervals to 87+/-10% and 55+/-16%, and high frequency power to 77+/-19% and 34+/-19% of baseline after moderate endurance exercise and marathon, respectively. Also nocturnal low frequency power decreased to 56+/-26% of baseline after the marathon. Changes in nocturnal heart rate and HRV suggest prolonged dose-response effects on autonomic modulation after exercises, which may give useful information on the extent of exercise-induced nocturnal autonomic modulation and disturbance to the homeostasis.
E Hynynen; V Vesterinen; H Rusko; A Nummela
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Publication Detail:
Type:  Journal Article     Date:  2010-04-23
Journal Detail:
Title:  International journal of sports medicine     Volume:  31     ISSN:  1439-3964     ISO Abbreviation:  Int J Sports Med     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-01     Completed Date:  2010-09-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  428-32     Citation Subset:  IM    
KIHU-Research Institute for Olympic Sports, Sports Physiology, Jyväskylä, Finland.
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MeSH Terms
Analysis of Variance
Exercise / physiology*
Heart Rate / physiology*
Homeostasis / physiology
Physical Endurance / physiology*
Running / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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