Document Detail


The energetics of walking on sand and grass at various speeds.
MedLine Citation:
PMID:  16720526     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study investigated the energetics of walking on sand and grass. Fourteen adult males, participated in the study. Participants had a mean age of 34.6 years old, 72.6 kg in mass and 172.5 cm in stature, who walked at 3, 4, 5, 6 and 7 km per h on sand and grass surfaces. Physiological measures included heart rate, O(2) uptake, CO(2) exhalation, ventilation and relative O(2) uptake using a MetaMax Ergospirometer. Speed was controlled in a methodology similar to the 'Multistage 20-m Shuttle Run Test'. Data were collected during physiological steady rate at each determined speed. A minimum of 2 h rest was enforced between randomized conditions. Results indicate that there was a significant increase (p < 0.01) in all measured physiological indices indicative of energy expenditure when walking on sand compared to grass at 3-7 km per h, with the greatest disparity between the surfaces (ratio = 1.63) in relative O(2) consumption at 5 km per h.
Authors:
S E H Davies; S N Mackinnon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ergonomics     Volume:  49     ISSN:  0014-0139     ISO Abbreviation:  Ergonomics     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-05-24     Completed Date:  2006-09-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373220     Medline TA:  Ergonomics     Country:  England    
Other Details:
Languages:  eng     Pagination:  651-60     Citation Subset:  IM; S    
Affiliation:
Department of Sports Management, Cape Peninsula University of Technology, Mowbray Campus, 7700, Cape Town, Republic of South Africa. daviess@cput.ac.za
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MeSH Terms
Descriptor/Qualifier:
Adult
Energy Metabolism / physiology*
Gait
Heart Rate
Humans
Male
Oxygen Consumption
Poaceae*
Silicon Dioxide*
Walking / physiology*
Chemical
Reg. No./Substance:
7631-86-9/Silicon Dioxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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