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The change of EMG during lifting a object from floor according to foot position

The purpose of this study is to represent a basic data about the comparison between EMG of lumbar and leg by the change of foot position.

Ten women in their twenties volunteered for this study. They took a measurement change between EMG of lumbar and leg with 'pick up a object' according to the change in foot position. Foot position degree was 0 and 45 degree. We measured 3 times for each person and the order of foot position was random. The EMG measure instrument(TeleMyo DTS telementry system; Noraxon, USA) was used in the study.

The muscle activation of TA(tibialis anterior), VL(vastus lateralis), MG(medial gastrocnemius), IC(iliocostalis) were increased in 45 degree and there were significant difference in TA, VL, IC of right side between o and 45 degree but only VL of left side has a significant difference between o and 45 degree (p<0.05).

These finding suggest that muscle activation during pick up a object differs depending on foot angle. We believe that these difference should be considered when physical therapist educate the proper posture to patient

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Correspondence to Lee Han Suk.

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This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.

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Suk, L.H., Hoo, K.J. The change of EMG during lifting a object from floor according to foot position. J Foot Ankle Res 7 (Suppl 1), A118 (2014).

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