Document Detail

Low-dose exercise training does not influence cardiac autonomic control in healthy sedentary men aged 55-75 years.
MedLine Citation:
PMID:  17175612     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to evaluate the effects of a realistic, feasible, and commonly used fitness training programme on cardiac autonomic control in 14 sedentary men aged 62.0 +/- 6.1 years (mean +/- s). All participants performed a one-year fitness training programme in which training intensity and frequency were specifically chosen to be compliant for the majority of the participants (2-3 sessions per week at moderate intensity). At the same time, a reference group consisting of 15 sedentary age-matched men (age 64.2 +/- 6.5 years) did not change their habitual physical activity. Measurements were performed before and after the training intervention. Cardiac autonomic control was inferred from resting values (supine and standing) of heart rate variability (HRV) computed in the frequency domain over 10-min intervals. Endurance capacity was evaluated during a maximal incremental bicycle ergometer test. In spite of an increase in peak oxygen consumption (VO2peak) by 6.4% after training, heart rate in the training group remained unchanged at rest and at the same metabolic demand. No changes in resting parameters of HRV were shown for either groups or positions. Results from this study provide no evidence of a clinically meaningful increase in the vagal modulation to the sinus node at rest after one year of low-volume and moderate-intensity fitness training in men aged 55-75 years.
Bart Verheyden; Bert O Eijnde; Frank Beckers; Luc Vanhees; André E Aubert
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of sports sciences     Volume:  24     ISSN:  0264-0414     ISO Abbreviation:  J Sports Sci     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-12-18     Completed Date:  2007-02-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8405364     Medline TA:  J Sports Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1137-47     Citation Subset:  IM    
Laboratory of Experimental Cardiology, Department of Cardiovascular Diseases, KU Leuven, Leuven, Belgium.
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MeSH Terms
Aging / physiology
Analysis of Variance
Autonomic Nervous System / physiology*
Case-Control Studies
Chi-Square Distribution
Exercise / physiology*
Heart Conduction System / physiology*
Heart Rate / physiology
Linear Models
Middle Aged
Oxygen Consumption / physiology

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

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