A Comparison of Economy and Sagittal Plate Trunk Movement Among Back-, Back/Front- and Head-Loading

Sean Hudson, Carlton Cooke, Simeon Davies, Sacha West, Raeeq Gamieldien, Chris Low, Ray Lloyd

Research output: Contribution to journalArticle

Abstract

It has been suggested that freedom of movement in the trunk could influence load carriage economy. This study aimed to compare the economy and sagittal plane trunk movements associated with three load carriage methods that constrain posture differently. Eighteen females walked at 3 km.h−1 with loads of 0, 3, 6, 9, 12, 15 and 20 kg carried on the back, back/front and head. Load carriage economy was assessed using the Extra Load Index (ELI). Change in sagittal plane trunk forward lean and trunk angle excursion from unloaded to loaded walking were assessed. Results show no difference in economy between methods (p = .483), despite differences in the change in trunk forward lean (p = .001) and trunk angle excursion (p = .021) from unloaded to loaded walking. We conclude that economy is not different among the three methods of load carriage, despite significant differences in sagittal plane trunk movements. Practitioner summary: This article shows, based on mean data, that there is no difference in economy among back, back/front and head-loading, despite differences in trunk movement. It is possible a combination of factors align to influence individual economy, rather than a single set of factors, applicable to all individuals for each method.

LanguageEnglish
Number of pages7
JournalErgonomics
Early online date14 May 2018
DOIs
Publication statusE-pub ahead of print - 14 May 2018
Externally publishedYes

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Head
economy
Walking
Posture
freedom of movement

Cite this

Hudson, Sean ; Cooke, Carlton ; Davies, Simeon ; West, Sacha ; Gamieldien, Raeeq ; Low, Chris ; Lloyd, Ray. / A Comparison of Economy and Sagittal Plate Trunk Movement Among Back-, Back/Front- and Head-Loading. In: Ergonomics. 2018.
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A Comparison of Economy and Sagittal Plate Trunk Movement Among Back-, Back/Front- and Head-Loading. / Hudson, Sean; Cooke, Carlton; Davies, Simeon; West, Sacha; Gamieldien, Raeeq; Low, Chris; Lloyd, Ray.

In: Ergonomics, 14.05.2018.

Research output: Contribution to journalArticle

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