Hudson, Sean ORCID: https://orcid.org/0000-0002-5386-8415, Cooke, C. and Lloyd, R. (2017) The reliability of the Extra Load Index as a measure of relative load carriage economy. Ergonomics, 60 (9). pp. 1250-1254.

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Abstract

The aim of this study was to measure the reliability of the extra load index (ELI) as a method for assessing relative load carriage economy. Seventeen volunteers (12 males, 5 females) performed walking trials at 3 km·h−1, 6 km·h−1 and a self-selected speed. Trial conditions were repeated 7 days later to assess test–retest reliability. Trials involved four 4-minute periods of walking, each separated by 5 min of rest. The initial stage was performed unloaded followed in a randomised order by a second unloaded period and walking with backpacks of 7 and 20 kg. Results show ELI values did not differ significantly between trials for any of the speeds (p = 0.46) with either of the additional loads (p = 0.297). The systematic bias, limits of agreement and coefficients of variation were small in all trial conditions. We conclude the ELI appears to be a reliable measure of relative load carriage economy.

Item Type:	Article
Status:	Published
DOI:	10.1080/00140139.2017.1282629
Subjects:	Q Science > Q Science (General) Q Science > QP Physiology T Technology > T Technology (General)
School/Department:	School of Science, Technology and Health
URI:	https://ray.yorksj.ac.uk/id/eprint/12266

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