| Reliability of a combined biomechanical and surface electromyographical analysis system during dynamic barbell squat exercise. | |
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MedLine Citation:
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PMID: 21831000 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Abstract An analysis system for barbell weightlifting exercises is proposed to record reliable performance and neuromuscular responses. The system consists of surface electromyography (sEMG) synchronized with electrogoniometry and a barbell position transducer. The purpose of this study was to establish the reliability of the three components of the system. Nine males (age 28.9 ± 4.8 years, mass 85.7 ± 15.1 kg) performed squat exercise at three loads on three separate trial days. A data acquisition and software system processed maximal knee angle (flexion), mean power for the concentric phase of squat exercise, and normalized root mean square of the vastus lateralis. Inter-trial coefficients of variation for each variable were calculated as 5.3%, 7.8%, and 7.5% respectively. In addition, knee joint motion and barbell displacement were significantly related to each other (bar displacement (m) = 1.39-0.0057 × knee angle (degress), with goodness-of-fit value, r (2) = 0.817), suggesting knee goniometry alone can represent the kinematics of a multi-joint squat exercise. The proven reliability of the three components of this system allows for real-time monitoring of resistance exercise using the preferred training methods of athletes, which could be valuable in the understanding of the neuromuscular response of elite strength training methods. |
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Authors:
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Raphael Brandon; Glyn Howatson; Angus Hunter |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-8-11 |
Journal Detail:
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Title: Journal of sports sciences Volume: - ISSN: 1466-447X ISO Abbreviation: - Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-8-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8405364 Medline TA: J Sports Sci Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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a Strength and Conditioning , English Institute of Sport , Manchester , UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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