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Sari Julia Sartika
PT PLN BATAM, Jl. Engku Putri No. 3 Batam Center, Batam, Indonesia
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Investigation of Lower Limb Fatigue on Two Standing Posture Sari Julia Sartika; Siti Zawiah Dawal
Jurnal Optimasi Sistem Industri Vol. 11 No. 1 (2012): Published in 1st April 2012
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.35 KB) | DOI: 10.25077/josi.v11.n1.p208-213.2012

Abstract

The purpose of this study was to investigate the different effect from the two standing posture on lower limb fatigue and discomfort. Sixteen subjects (eight females and eight males), aged between 23-29 years, participated in the experiment. They performed a sorting task in front of a grading table by picking and placing objects for 90 minutes in two posture (1) standing and (2) standing using a footrest. Muscle activity was recorded with surface EMG through disposable electrodes. The result shows that standing for ninety minutes developed fatigue in lower limb muscles and back muscles that lead to low back pain. Standing using a footrest result proper posture for prolonged standing period and reduce force at the back. It also results less fatigue and reduce the %MVC of EMG. So, it is recommended to attach a footrest in standing workstation to reduce the fatigue and discomfort.Keywords:fatigue, posture, standing,lower limb, EMG
Investigation of Lower Limb Fatigue on Two Standing Posture Sari Julia Sartika; Siti Zawiah Dawal
Jurnal Optimasi Sistem Industri Vol. 11 No. 1 (2012): Published in April 2012
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v11.n1.p208-213.2012

Abstract

The purpose of this study was to investigate the different effect from the two standing posture on lower limb fatigue and discomfort. Sixteen subjects (eight females and eight males), aged between 23-29 years, participated in the experiment. They performed a sorting task in front of a grading table by picking and placing objects for 90 minutes in two posture (1) standing and (2) standing using a footrest. Muscle activity was recorded with surface EMG through disposable electrodes. The result shows that standing for ninety minutes developed fatigue in lower limb muscles and back muscles that lead to low back pain. Standing using a footrest result proper posture for prolonged standing period and reduce force at the back. It also results less fatigue and reduce the %MVC of EMG. So, it is recommended to attach a footrest in standing workstation to reduce the fatigue and discomfort.
Co-Authors Siti Zawiah Dawal Siti Zawiah Dawal