| Lower Extremity Biomechanics During a Regular and Counter-Balanced Squat. | |
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MedLine Citation:
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PMID: 22076098 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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If the efficiency of human movement patterns could be improved using exercise, this could lead to more effective musculoskeletal disease/injury prevention and rehabilitation programs. It has been suggested that an efficient squat movement pattern emphasizes the use of the large hip extensors instead of the smaller knee extensors. The purpose of this study was to determine whether a counter-balanced squat (CBS) could produce a more hip-dominant and less knee-dominant squat movement pattern as compared to a regular squat (RS). There were 31 recreationally trained college aged participants (15 male, 16 female) who performed ten squats (5 CBS and 5 RS), while segment kinematics, ground reaction forces and muscle (gluteus maximus, quadriceps, hamstrings) EMG activations were recorded. Peak sagittal plane net joint moments and joint ranges of motion at the hip, knee and ankle joints along with peak and integrated EMG activation levels for all three muscles were compared using ANOVAs (squat type X sex). The results revealed that the CBS increased the hip joint moment and gluteus maximus activation, while it decreased the knee joint moment and quadriceps activation as compared to the RS. Therefore, the CBS produces a more hip dominant and less knee dominant squat movement pattern and could be used in exercise programs aimed at producing more hip dominant movement patterns. |
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Authors:
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Scott K Lynn; Guillermo J Noffal |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-09 |
Journal Detail:
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Title: Journal of strength and conditioning research / National Strength & Conditioning Association Volume: - ISSN: 1533-4287 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9415084 Medline TA: J Strength Cond Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1 California State University, Fullerton. Department of Kinesiology. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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