| Exercise training-induced changes in heart rate recovery in obese men with metabolic syndrome. | |
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MedLine Citation:
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PMID: 19450157 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Heart rate recovery (HRR) as a function of vagal reactivation, which is an independent risk predictor for cardiovascular disease and mortality, is strongly associated with metabolic syndrome. METHODS: Middle-aged obese men (metabolic syndrome, n = 20; non-metabolic syndrome, n = 22) classified on the basis of Adult Treatment Panel III criteria were investigated in this study. Postexercise HRR and the HRR decay constant following a symptom-limited bicycle exercise test were evaluated before and after a 12-week exercise training program (60-70% of maximal heart rate; 60 minutes per day; 3 days per week). RESULTS: Although the peak HR remained unchanged, HR at anaerobic threshold significantly decreased for both groups after exercise training; HR at rest was significantly decreased in the metabolic syndrome group after training (P < 0.05). HRR significantly improved in the metabolic syndrome group (-26.1 +/- 3.6 beats/minute vs. -33.5 +/- 3.8 beats/minute, at 1 minute; -39.9 +/- 4.9 beats/minute vs. -49.5 +/- 4.9 beats/minute, at 2 minute, P < 0.05) with no change for the non-metabolic syndrome group (P > 0.05). HRR decay constant values showed significant improvement in the metabolic syndrome group (0.31 +/- 0.02%/second vs. 0.35 +/- 0.02%/second, P = 0.038) after exercise training but not the non-metabolic syndrome group (P > 0.05). CONCLUSIONS: This study demonstrated that moderate-intensity physical training without caloric restrictions improves HRR in obese men with metabolic syndrome, possibly due to a reduction in the resting HR. Therefore, weight loss-induced exercise training would help in improving the resting HR, and the responsiveness of the autonomic nervous system in obese men with metabolic syndrome. |
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Authors:
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Maeng-Kyu Kim; Kiyoji Tanaka; Mi-Ji Kim; Tomoaki Matsuo; Ryuichi Ajisaka |
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Publication Detail:
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Type: Controlled Clinical Trial; Journal Article |
Journal Detail:
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Title: Metabolic syndrome and related disorders Volume: 7 ISSN: 1557-8518 ISO Abbreviation: Metab Syndr Relat Disord Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2009-10-05 Completed Date: 2009-12-17 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101150318 Medline TA: Metab Syndr Relat Disord Country: United States |
Other Details:
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Languages: eng Pagination: 469-76 Citation Subset: IM |
Affiliation:
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Department of Sports Medicine for Health and Disease, Graduate School of Comprehensive Human Science, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan. kimmk@stat.taiiku.tsukuba.ac.jp |
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| MeSH Terms | |
Descriptor/Qualifier:
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Anaerobic Threshold Autonomic Nervous System / physiopathology Exercise Test Exercise Therapy* Heart Rate* Humans Male Metabolic Syndrome X / complications, physiopathology, therapy* Middle Aged Obesity / complications, physiopathology, therapy* Recovery of Function Time Factors Treatment Outcome |
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