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Ageing Effects on the Mechanical Energy Cost of Walking

Nagano, Hanatsu, Sparrow, William A and Begg, Rezaul ORCID: 0000-0002-3195-8591 (2013) Ageing Effects on the Mechanical Energy Cost of Walking. In: World Congress on Medical Physics and Biomedical Engineering May 26-31, 2012, Beijing, China. Long, Mian, ed. IFMBE Proceedings, 39 . Springer, Heidelberg, 168-171 .

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The mechanics of human gait have been considered to minimize the mechanical energy costs of transporting the body. With ageing, however, there are adaptations to gait that may be less mechanically efficient than younger adults’ locomotion. The current study compared the mechanical energy efficiency of gait in young and older adults by characterizing the whole body center of mass mechanics. The efficiencies of the inverted-pendulum model during the single support phase and step-to-step transition during double support were investigated. Older adults walked slower than young controls with shorter and wider steps, and consequently their total energetic cost was lower due to the reduced kinetic energy associated with shorter steps and lower walking velocity. There was, however, no evidence of age-related impairments to mechanical energy efficiency. It was concluded that in preferred speed unobstructed walking ageing leads to gait adaptations that encourage greater stability without increasing the mechanical energy cost.

Item Type: Book Section
ISBN: 9783642293047 (print) 9783642293054 (online) 1680-0737
Uncontrolled Keywords: gait, centre of mass, ageing, inverted-pendulum, double support
Subjects: Current > FOR Classification > 1106 Human Movement and Sports Science
Historical > Faculty/School/Research Centre/Department > Institute of Sport, Exercise and Active Living (ISEAL)
Current > Division/Research > College of Sports and Exercise Science
Depositing User: VUIR
Date Deposited: 08 Jan 2014 03:43
Last Modified: 20 Jun 2019 23:00
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Citations in Scopus: 0 - View on Scopus

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