Controlled experimental protocols for metabolic cost assessment of speed-changing locomotion are quite complex to design and manage. The use of the 'equivalent slope', i.e. the gradient locomotion at constant speed metabolically equivalent to a level progression in acceleration, has proved valuable in the estimation of the metabolic cost of speed-changing gaits. However, its use with steep slopes requires extrapolation of the experimental cost versus gradient function for constant running speed, resulting in less-reliable estimates. The present study extended the model to also work with deceleration, and revised the predictive equation to enable it to be applied to much higher levels of speed change. Shuttle running at different distances (from 5+5 to 20+20 m) was then investigated using the novel approach and software, and the predictions in terms of metabolic cost and efficiency compare well with the experimental data.

Update and extension of the 'equivalent slope' of speed-changing level locomotion in humans : a computational model for shuttle running / A.E. Minetti, G. Pavei. - In: JOURNAL OF EXPERIMENTAL BIOLOGY. - ISSN 1477-9145. - 221:15(2018 Aug), pp. jeb182303.1-jeb182303.9. [10.1242/jeb.182303]

Update and extension of the 'equivalent slope' of speed-changing level locomotion in humans : a computational model for shuttle running

A.E. Minetti
;
G. Pavei
2018

Abstract

Controlled experimental protocols for metabolic cost assessment of speed-changing locomotion are quite complex to design and manage. The use of the 'equivalent slope', i.e. the gradient locomotion at constant speed metabolically equivalent to a level progression in acceleration, has proved valuable in the estimation of the metabolic cost of speed-changing gaits. However, its use with steep slopes requires extrapolation of the experimental cost versus gradient function for constant running speed, resulting in less-reliable estimates. The present study extended the model to also work with deceleration, and revised the predictive equation to enable it to be applied to much higher levels of speed change. Shuttle running at different distances (from 5+5 to 20+20 m) was then investigated using the novel approach and software, and the predictions in terms of metabolic cost and efficiency compare well with the experimental data.
Acceleration; Cost of transport; Deceleration; Running; Unsteady
Settore BIO/09 - Fisiologia
Settore M-EDF/02 - Metodi e Didattiche delle Attivita' Sportive
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/590382
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