Source:http://linkedlifedata.com/resource/pubmed/id/20885201
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
10
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pubmed:dateCreated |
2010-10-4
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pubmed:abstractText |
Training at low intensities with moderate vascular occlusion results in increased muscle hypertrophy, strength, and endurance. Elastic knee wraps, applied to the proximal portion of the target muscle, might elicit a stimulus similar to the KAATSU Master Apparatus. The purpose of this study was to test the hypothesis that intermittently occluding the leg extensors with elastic knee wraps would increase whole-blood lactate (WBL) over control (CON). Twelve healthy men and women participated in this study (age 21.2 ± 0.35 years, height 168.9 ± 2.60 cm, and body mass 71.2 ± 4.16 kg). One repetition maximum (1RM) testing for the leg extensors was performed on a leg extension machine for the first trial, followed by occlusion (OCC) and CON trials. Four sets of leg extension exercise (30-15-15-15) were completed with 150-second rest between sets at 30% 1RM. Whole-blood lactate, heart rate (HR), and ratings of perceived exertion (RPEs) were measured after every set of exercise and 3 minutes postexercise. Data were analyzed using repeated-measures analysis of variance with statistical significance set at p ? 0.05. Whole-blood lactate increased in response to exercise (p = 0.01) but was not different between groups (OCC 6.28 ± 0.66 vs. CON 5.35 ± 0.36 mmol·L, p = 0.051). Heart rate (OCC 128.86 ± 4.37 vs. CON 119.72 ± 4.10 b·min?¹) was higher with OCC from sets 2-4 (p ? 0.03), with no difference 3 minutes postexercise (p = 0.29). Rating of perceived exertion was higher with OCC after every set (OCC 15.10 ± 0.31 vs. CON 12.16 ± 0.50, p = 0.01). In conclusion, no differences exist for WBL between groups, although there was a trend for higher levels with OCC. The current protocol for practical occlusion did not significantly increase metabolic stress more than normal low-intensity exercise. This study does not support the use of knee wraps as a mode of blood-flow restriction.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
1533-4287
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pubmed:author | |
pubmed:issnType |
Electronic
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pubmed:volume |
24
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
2831-4
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pubmed:meshHeading |
pubmed-meshheading:20885201-Exercise,
pubmed-meshheading:20885201-Female,
pubmed-meshheading:20885201-Heart Rate,
pubmed-meshheading:20885201-Humans,
pubmed-meshheading:20885201-Knee,
pubmed-meshheading:20885201-Lactic Acid,
pubmed-meshheading:20885201-Male,
pubmed-meshheading:20885201-Muscle, Skeletal,
pubmed-meshheading:20885201-Physical Exertion,
pubmed-meshheading:20885201-Regional Blood Flow,
pubmed-meshheading:20885201-Stockings, Compression,
pubmed-meshheading:20885201-Young Adult
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pubmed:year |
2010
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pubmed:articleTitle |
The acute response of practical occlusion in the knee extensors.
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pubmed:affiliation |
Department of Health, Human Performance, and Recreation, Southeast Missouri State University, Cape Girardeau, Missouri, USA. jploenneke1s@semo.edu
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pubmed:publicationType |
Journal Article,
Clinical Trial
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