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Updated: Jul 19, 2026

Evaluating the Function of the Foot Core System in the Elderly
Published on: March 11, 2022
Physiological and psychophysical responses in handling maximum acceptable weights under different footwear--floor
Kai Way Li1, Rui-feng Yu, Xiao L Han
1Liberty Mutual Research Institute for Safety, Centre for Safety Research, 71 Frankland Road, Hopkinton, MA 01748, USA. kaiway.li@libertymutual.com
Abstract:
A study on combined manual materials-handling tasks performed on floors under three friction levels was conducted. Eight male subjects participated in the study. The maximum acceptable weight of handling, including lifting, carrying for 3m, lowering, and walking 3m back at twice per minute was determined. The subject then performed the same tasks for 10 min. Heart rate, Vo2, energy efficiency, perceived sense of slip, and rating of perceived exertion for whole body strain were measured. The results showed that the effects of friction level on the maximum acceptable weights of handling, perceived sense of slip, Vo2, and energy efficiency were statistically significant (p
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