| Effect of 6 d of exercise training on responses to maximal and sub-maximal exercise in middle-aged men. | |
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MedLine Citation:
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PMID: 3386505 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Nine sedentary men (53 +/- 3 yr) were studied before and after 6 d of endurance exercise training to determine the effects on maximal oxygen uptake (VO2max), and on the heart rate, blood pressure, and metabolic responses to a standard bout of steady-state sub-maximal exercise. The subjects exercised approximately 1 h.d-1 at about 68% of VO2max. The 6-d protocol elicited no improvement in VO2max (2.50 +/- 0.14 before vs 2.58 +/- 0.15 l.min-1 after training). Heart rates were significantly lower by 5 to 8 b.min-1, systolic blood pressures were reduced by 16 to 19 mm Hg, and blood lactate concentrations were 25 to 35% less at the same exercise intensities (60, 70, and 80% of VO2max) after 6 d of exercise. Rate pressure product was about 15% lower at the same exercise intensity after 6 d of training (P less than 0.05). The respiratory exchange ratio during submaximal exercise was 0.02 to 0.04 units lower (P less than 0.05; P less than 0.01) after 6 d of exercise, indicating a shift in substrate utilization favoring fat oxidation. These findings suggest that short-term endurance training can induce heart rate, blood pressure, and metabolic adaptations to sub-maximal exercise before there is a significant increase in VO2max in sedentary, middle-aged men who are capable of vigorous exercise. |
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Authors:
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M A Rogers; C Yamamoto; J M Hagberg; W H Martin; A A Ehsani; J O Holloszy |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 20 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 1988 Jun |
Date Detail:
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Created Date: 1988-08-08 Completed Date: 1988-08-08 Revised Date: 2008-11-21 |
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: 260-4 Citation Subset: IM; S |
Affiliation:
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Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Pressure Heart Rate Humans Lactates / blood Male Middle Aged Oxygen Consumption* Physical Exertion* |
| Grant Support | |
ID/Acronym/Agency:
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AG00078/AG/NIA NIH HHS; AG05562/AG/NIA NIH HHS; HL07456/HL/NHLBI NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Lactates |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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