| Acute Responses to High-Intensity Intermittent Exercise in CHD Patients. | |
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MedLine Citation:
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PMID: 20543746 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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PURPOSE: : Although the acute physiological responses to continuous exercise have been well documented in CHD patients, no previous study has examined the responses to high-intensity intermittent exercise in these patients. The purpose of this study was to compare the physiological responses to a high-intensity interval exercise (HIIE) protocol versus a moderate-intensity continuous exercise (MICE) protocol of similar energy expenditure in CHD patients. METHODS: : Twenty patients with stable CHD (19 males and 1 female, 62 ± 11 yr) were assigned in random order to a single session of HIIE corresponding to 15-s intervals at 100% of peak power output (PPO) and 15-s passive recovery intervals and, 2 wk later, to an isocaloric MICE corresponding to 70% of PPO. RESULTS: : Both protocols were equivalent in terms of energy expenditure. The HIIE protocol resulted in lower mean ventilation (P < 0.001) for a small difference in metabolic demand. All participants preferred the HIIE mainly because the perceived exertion measured by the Borg scale was lower (P < 0.05). No elevation of serum concentration of troponin T was found in all participants at baseline and at 20 min and 24 h after the exercise sessions, thus excluding the presence of any exercise-induced myocardial injury in our patients. CONCLUSIONS: : When considering physiological responses, safety, and perceived exertion, the HIIE protocol seemed to be well tolerated and more efficient in this group of stable CHD patients. |
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Authors:
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Thibaut Guiraud; Anil Nigam; Martin Juneau; Philippe Meyer; Mathieu Gayda; Laurent Bosquet |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 43 ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 211-7 Citation Subset: IM; S |
Affiliation:
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1Montreal Heart Institute, Cardiovascular Prevention Centre (Centre ÉPIC), University de Montreal, Montreal, CANADA; 2Department of Kinesiology, University de Montreal, Montreal, CANADA; and 3Faculty of Sports Sciences, University of Poitiers, Poitiers, FRANCE. |
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