| Effects of isokinetic training of the knee extensors on high-intensity exercise performance and skeletal muscle buffering. | |
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MedLine Citation:
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PMID: 8055896 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Twenty-three subjects isokinetically trained the right and left quadriceps femoris, three times per week for 16 weeks; one group (n = 13) trained at an angular velocity of 4.19 rad.s-1 and a second group (n = 10), at 1.05 rad.s-1. A control group (n = 10) performed no training. Isometric endurance time at 60% quadriceps maximum voluntary contraction (MVC), mean power output and work done (W) during all-out cycling, and the muscle buffer value (B) and carnosine concentration of biopsy samples from the vastus lateralis, were all assessed before and after training. The two training groups did not differ significantly from each other in their training response to any of these variables (P < 0.05). No significant difference in either 60% MVC endurance time or impulse [(endurance time x force) at 60% MVC] was observed for any group after the 16 week period (P > 0.05). However, the post-training increase (9%) in W during high-intensity cycling was greater in the training group than in the control group (P = 0.04). Neither B nor carnosine concentration showed any significant change following training (P = 0.56 and P = 0.37, respectively). It is concluded that 16 weeks of isokinetic training of the knee extensors enables subjects to do more work during high-intensity cycling. Although the precise adaptations responsible for the improved performance have yet to be identified, they are unlikely to include an increase in B. |
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Authors:
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A F Mannion; P M Jakeman; P L Willan |
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Publication Detail:
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Type: Clinical Trial; Controlled Clinical Trial; Journal Article |
Journal Detail:
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Title: European journal of applied physiology and occupational physiology Volume: 68 ISSN: 0301-5548 ISO Abbreviation: Eur J Appl Physiol Occup Physiol Publication Date: 1994 |
Date Detail:
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Created Date: 1994-09-15 Completed Date: 1994-09-15 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0410266 Medline TA: Eur J Appl Physiol Occup Physiol Country: GERMANY |
Other Details:
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Languages: eng Pagination: 356-61 Citation Subset: IM; S |
Affiliation:
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School of Sport and Exercise Sciences, University of Birmingham, England. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Buffers Carnosine / metabolism Exercise Test Female Humans Hydrogen-Ion Concentration Isometric Contraction Knee / physiology* Male Muscles / metabolism, physiology* Physical Education and Training* Physical Endurance* Physical Exertion* |
| Chemical | |
Reg. No./Substance:
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0/Buffers; 305-84-0/Carnosine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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