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Ergonomics. 2006 Jun 10;49(7):651-60.

The energetics of walking on sand and grass at various speeds.

Author information

1
Department of Sports Management, Cape Peninsula University of Technology, Mowbray Campus, 7700, Cape Town, Republic of South Africa. daviess@cput.ac.za

Abstract

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.

PMID:
16720526
DOI:
10.1080/00140130600558023
[Indexed for MEDLINE]

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