Document Detail


The effect of aerobic training and cardiac autonomic regulation in young adults.
MedLine Citation:
PMID:  19299682     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: We tested the effect of aerobic exercise on autonomic regulation of the heart in healthy young adults.
METHODS: Healthy, sedentary young adults (n = 149; age = 30.4 +/- 7.53 years) were randomized to receive 12 weeks of either aerobic conditioning or strength training. Primary outcomes were heart rate and RR interval variability (RRV) measured before and after training and after 4 weeks of sedentary deconditioning. RRV, a noninvasive index of cardiac autonomic regulation, reflects variability in the intervals between consecutive R waves of the electrocardiogram.
RESULTS: Aerobic conditioning but not strength training led to a significant increase in aerobic capacity (3.11 mL/kg/min), a decrease in heart rate (-3.49 beats per minute), and an increase in high-frequency RRV (0.25 natural log msec2), each of which returned to pretraining levels after deconditioning. Significant 3-way interactions, however, revealed autonomic effects only in men.
CONCLUSIONS: In sedentary, healthy young adults, aerobic conditioning but not strength training enhances autonomic control of the heart, but post hoc analyses suggested that gender plays a significant role in this exercise-related cardioprotection.
Authors:
Richard P Sloan; Peter A Shapiro; Ronald E DeMeersman; Emilia Bagiella; Elizabeth N Brondolo; Paula S McKinley; Iordan Slavov; Yixin Fang; Michael M Myers
Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2009-03-19
Journal Detail:
Title:  American journal of public health     Volume:  99     ISSN:  1541-0048     ISO Abbreviation:  Am J Public Health     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-13     Completed Date:  2009-05-06     Revised Date:  2013-06-02    
Medline Journal Info:
Nlm Unique ID:  1254074     Medline TA:  Am J Public Health     Country:  United States    
Other Details:
Languages:  eng     Pagination:  921-8     Citation Subset:  AIM; IM    
Affiliation:
Division of Behavioral Medicine, Department of Psychiatry, Columbia University, 1150 St Nicholas Ave, Suite 121, New York, NY 10032, USA. rps7@columbia.edu
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Age Factors
Autonomic Nervous System / physiology*
Exercise / physiology*
Exercise Test
Exercise Tolerance / physiology*
Female
Heart Rate
Humans
Isometric Contraction / physiology*
Male
Middle Aged
Muscle Strength / physiology*
Oxygen Consumption
Regression Analysis
Young Adult
Grant Support
ID/Acronym/Agency:
K02 MH01491/MH/NIMH NIH HHS; M01-RR00645/RR/NCRR NIH HHS; R01 HL61287/HL/NHLBI NIH HHS
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