| Effect of Weighted Vest Suit Worn during Daily Activities on Running Speed, Jumping Power and Agility in Young Men. | |
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MedLine Citation:
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PMID: 22266642 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Previous weighted vest interventions utilizing exercise in addition to hypergravity have been successful in improving postural balance and power production capacity. The purpose of the present study was to investigate if hypergravity alone in daily activities excluding sporting activities is effective in improving neuromuscular performance in young adults. Eight male subjects (age = 32(SD6) years, height = 178(5) cm, body mass = 81(8) kg) wore weighted vests three days/week for three weeks during waking hours excluding sporting activities. Control group comprised nine male subjects (age = 32(6) years, height = 179(5) cm, body mass = 83(9) kg). Performance was assessed with counter movement jump (body mass normalized peak power), figure-of-8 running test (running time) and running velocity test at baseline and at the end of the intervention. At baseline, the groups did not differ from each other (MANOVA P = 0.828). A significant group x time interaction (MANOVA F = 5.1, P = 0.015) was observed for performance variables. ANCOVA indicated that the intervention improved figure-of-8 running time (P = 0.016) (-2.2% vs. 0.5%), while normalized peak power (0.0% vs. 1.6%) and running velocity (1.3% vs. 0.1%) were unaffected (P ≥ 0.095). Wearing weighted vests was effective in slightly improving agility related performance in young men. Since the effect was small applying hypergravity only during exercise probably suffices. It appears that a proper volume and intensity of hypergravity could be in the order of 5 - 10% body weight vest worn during up to 50% of the training sessions for a period of 3 to 4 weeks. |
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Authors:
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Timo Rantalainen; Ilona Ruotsalainen; Mikko Virmavirta |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-20 |
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: 2012 Jan |
Date Detail:
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Created Date: 2012-1-23 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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1Centre for Physical Activity and Nutrition Research, School of Exercise and Nutrition Sciences, Deakin University, Melbourne, 2Department of Mechanical engineering, Lappeenranta University of Technology, Finland, 3Department of Health Sciences, University of Jyväskylä, Finland 4Neuromuscular Research Center, Department of Biology of Physical Activity, University of Jyväskylä, Finland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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