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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
12
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pubmed:dateCreated |
1990-6-5
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pubmed:abstractText |
Recent investigations have argued for the metabolic efficiency of headloading as a mode of load-carriage, and have included proposals of an energetic 'free-ride' for loads under 20% bodymass. Our own energy-cost analyses on laboratory-habituated African women occupational headloaders is used to evaluate the free-ride hypothesis, but more especially to throw new light on the kinematics of foot-floor contact patterns. Under headloading there is a tendency for the impact-receiving mechanisms of the foot to be less effective. However, a delayed heel-rise later in the step increases stability of support by reducing the duration of forefoot-only contact. Plantar thrust under headloading has a relatively longer duration, which may have force-velocity implications for the propulsive musculature.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
|
pubmed:issn |
0014-0139
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
32
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1539-50
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:2634557-Adult,
pubmed-meshheading:2634557-Agriculture,
pubmed-meshheading:2634557-Energy Metabolism,
pubmed-meshheading:2634557-Ethnic Groups,
pubmed-meshheading:2634557-Female,
pubmed-meshheading:2634557-Humans,
pubmed-meshheading:2634557-Locomotion,
pubmed-meshheading:2634557-Physical Exertion,
pubmed-meshheading:2634557-Posture,
pubmed-meshheading:2634557-South Africa
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pubmed:year |
1989
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pubmed:articleTitle |
Metabolic and kinematic responses of African women headload carriers under controlled conditions of load and speed.
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pubmed:publicationType |
Journal Article
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