Abstract：
PURPOSE:To explore the influence of the epicardial fat (EF) tissue on aspects of heart rate recovery (HRR) and cardiorespiratory fitness (V O2peak) in middle-aged men. METHODS:A cross-sectional analysis of EF thickness was performed on 101 overweight or obese men. The men were categorized into low-EF, moderate-EF, and high-EF groups on the basis of ventricular EF thickness, as measured by transthoracic echocardiography. V O2peak was assessed with a graded maximal cycle ergometric test, including measurement of HRR 2 min after test cessation to estimate parasympathetic activity, with assessment of several metabolic parameters. RESULTS:Men in the highest and the middle EF thickness tertile had significantly slower recovery times than subjects in the lowest tertile, respectively (P < 0.05). Subjects with higher EF thickness were more likely to have impaired recovery and to reveal lower cardiorespiratory fitness than low-EF group subjects. There was a significant partial correlation, adjusted by age and body weight, between EF thickness and V O2peak (r = -0.25, P = 0.014). In the hierarchical multiple linear regression analyses, EF thickness was the strongest predicting variable associated with V O2peak in these population (beta = -1.182, P = 0.001). CONCLUSIONS:Higher EF thickness in men is associated with lower HRR at 1 and 2 min, a representation of autonomic dysfunction and poor cardiorespiratory fitness. These data suggest that moderately obese men with thicker EF tissue demonstrate reduced cardiorespiratory fitness and a differing parasympathetic response to exercise testing, as compared with men with lower EF levels.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Kim MK,Tanaka K,Kim MJ,Matsuo T,Tomita T,Ohkubo H,Maeda S,Ajisaka Rdoi
10.1249/MSS.0b013e3181b8b1f0subject
Has Abstractpub_date
2010-03-01 00:00:00pages
463-9issue
3eissn
0195-9131issn
1530-0315journal_volume
42pub_type
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