Vol 8, No 2 (2017) > Industrial Engineering >

The Effectiveness of an Elementary School Chair Design to Ensure Ease of Mobility

Lu'Lu' Purwaningrum, Ping Yeap Loh, Satoshi Muraki



The aim of this study
was to evaluate the effectiveness of Indonesian elementary school chair
modification and to determine the proper holding position when transporting
chairs during class activities for children aged 6-8 years old. Participants included 14 healthy, right-handed
Indonesian and Japanese children. The effectiveness of the modification was
examined by comparing the original chair (OR) and modified chairs (MD), first in the lower (LHP) and second in the
higher (HHP) holding positions using three measurements, namely task time, using an electromyography  (EMG)
technique while carrying a chair, and measuring success rates for proper
lifting and turning a chair methods. The use of the chair (MD and LHP) significantly reduced task time and significantly
decreased the activity of the middle fiber of the deltoid muscle. However,
for lifting and turning a chair onto a desk, these strategies did not eliminate
the influence of excessive chair weight and discouraged easy task completion.

Keywords: Chair transport; Elementary school children; Proper holding position; School chair modification

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