Document Detail

Lower cardiac vagal tone in non-obese healthy men with unfavorable anthropometric characteristics.
MedLine Citation:
PMID:  20126345     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: to determine if there are differences in cardiac vagal tone values in non-obese healthy, adult men with and without unfavorable anthropometric characteristics.
INTRODUCTION: It is well established that obesity reduces cardiac vagal tone. However, it remains unknown if decreases in cardiac vagal tone can be observed early in non-obese healthy, adult men presenting unfavorable anthropometric characteristics.
METHODS: Among 1688 individuals assessed between 2004 and 2008, we selected 118 non-obese (BMI <30 kg/m(2)), healthy men (no known disease conditions or regular use of relevant medications), aged between 20 and 77 years old (42 +/- 12-years-old). Their evaluation included clinical examination, anthropometric assessment (body height and weight, sum of six skinfolds, waist circumference and somatotype), a 4-second exercise test to estimate cardiac vagal tone and a maximal cardiopulmonary exercise test to exclude individuals with myocardial ischemia. The same physician performed all procedures.
RESULTS: A lower cardiac vagal tone was found for the individuals in the higher quintiles - unfavorable anthropometric characteristics - of BMI (p=0.005), sum of six skinfolds (p=0.037) and waist circumference (p<0.001). In addition, the more endomorphic individuals also presented a lower cardiac vagal tone (p=0.023), while an ectomorphic build was related to higher cardiac vagal tone values as estimated by the 4-second exercise test (r=0.23; p=0.017).
CONCLUSIONS: Non-obese and healthy adult men with unfavorable anthropometric characteristics tend to present lower cardiac vagal tone levels. Early identification of this trend by simple protocols that are non-invasive and risk-free, using select anthropometric characteristics, may be clinically useful in a global strategy to prevent cardiovascular disease.
Plínio S Ramos; Claudio Gil S Araújo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinics (São Paulo, Brazil)     Volume:  65     ISSN:  1980-5322     ISO Abbreviation:  Clinics (Sao Paulo)     Publication Date:  2010  
Date Detail:
Created Date:  2010-02-03     Completed Date:  2010-10-28     Revised Date:  2013-05-31    
Medline Journal Info:
Nlm Unique ID:  101244734     Medline TA:  Clinics (Sao Paulo)     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  45-51     Citation Subset:  IM    
Programa de Pós-Graduação em Educação Física, Universidade Gama Filho - Rio de Janeiro/RJ, Brasil.
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MeSH Terms
Analysis of Variance
Body Height / physiology
Body Size / physiology*
Body Weight / physiology
Exercise Test
Heart / innervation*
Middle Aged
Somatotypes / physiology
Vagus Nerve / physiopathology*
Waist Circumference / physiology
Young Adult

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