| The effect of weighted vest walking on metabolic responses and ground reaction forces. | |
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MedLine Citation:
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PMID: 16679992 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: This study examined how oxygen consumption, relative exercise intensity, vertical ground reaction forces (VGRF), and loading rate (LR) were affected while using a weighted vest (WV) during treadmill walking. METHODS: A sample of 10 (aged 23.4 +/- 1.7 yr) subjects performed a standardized walking test (4-min stages at 0.89, 1.12, 1.34, 1.56, and 1.79 m x s(-1)) on a treadmill under four weighted vest conditions (0, 10, 15, and 20% of body mass (BM)). Dependent variables included oxygen consumption (VO2), relative exercise intensity, first (F1) and second (F2) peaks of the VGRF curve, and LR. RESULTS: Repeated-measures ANOVA revealed significant vest versus speed interaction for V O2 and relative exercise intensity. Follow-up contrasts showed significant vest effect differences between 0% BM and all other WV conditions, and between 10 and 20% BM at all speeds for V O2. Follow-up analysis of relative exercise intensity demonstrated no significant vest effect difference at slower speeds, but significant differences at higher speeds. A significant main effect for WV condition was found for F1, F2, and LR. Follow-up testing revealed F1 and F2 at 0% BM were significantly different than at 10, 15, and 20% BM. F1 and F2 at 10% BM were significantly different than 20% BM, whereas F1 at 15% BM was significantly different than at 20% BM. LR at 0% BM was significantly different than at 15 and 20% BM. CONCLUSION: Using a weighted vest can increase the metabolic costs, relative exercise intensity, and loading of the skeletal system during walking. |
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Authors:
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Michael L Puthoff; Benjamin J Darter; David H Nielsen; H John Yack |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 38 ISSN: 0195-9131 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2006 Apr |
Date Detail:
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Created Date: 2006-05-08 Completed Date: 2006-06-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 746-52 Citation Subset: IM; S |
Affiliation:
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University of Iowa, Iowa City, IA, USA. puthoffmichaell@sau.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Analysis of Variance Clothing* Female Heart Rate / physiology Humans Leg / physiology Male Muscle, Skeletal / metabolism* Oxygen Consumption / physiology Walking / physiology* Weight-Bearing / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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