| A Comparison of Ballistic and Non-Ballistic Lower-Body Resistance Exercise and the Methods Used to Identify Their Positive Lifting Phases. | |
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MedLine Citation:
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PMID: 22085898 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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This study compared differences between ballistic jump squat (B) and non-ballistic back squat (NB) force, velocity, power and relative acceleration duration, and the affect that the method used to identify the positive lifting phase had on these parameters. Ground reaction force (GRF) and barbell kinematics were recorded from 30 resistance trained men during B and NB performance with 45% 1RM. Force, velocity and power was averaged over positive lifting phases identified using the traditional peak barbell displacement (PD) and positive impulse (PI) method. No significant differences were found between B and NB mean force, and mean power, but B mean velocity was 14% greater than the NB equivalent. Positive impulse mean force was 24% greater than PD mean force, and B relative acceleration duration was 8.6% greater than the NB equivalent when PD was used to identify the end of the positive lifting phase. These results challenge common perceptions of B superiority for power development. |
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Authors:
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Jason Lake; Mike Lauder; Neal Smith; Kathleen Shorter |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-14 |
Journal Detail:
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Title: Journal of applied biomechanics Volume: - ISSN: 1065-8483 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9315240 Medline TA: J Appl Biomech Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Sport and Exercise Science, University of Chichester, College Lane, Chichester, West Sussex. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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