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KMID : 1142420170150030343
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PNF and Movement
2017 Volume.15 No. 3 p.343 ~ p.351
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Comparison of Muscle Activity of Thigh and Plantar Pressure according to the Change in Base of Support during Lunge
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Lee Jeon-Hyeong
Lee Myoung-Hee
Kim Gi-Chul
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Abstract
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Purpose: This study aimed to suggest effective lunge exercise methods for various purposes by comparing differences in the muscle activity of thigh and plantar pressure according to changes in base of support during lunge exercises.
Methods: The subjects were 20 college students who agreed to participate in the experiment. They performed three types of lunges-a basic lunge (BL), wide lunge (WL), and narrow lunge (NL). In a static position during each lunge, the muscle activity of the thigh and plantar pressure were measured. Each movement was maintained for 7 seconds, and the muscle activity for the 3 seconds in the middle was measured and analyzed. The plantar pressure was divided into six areas for analysis. The subjects randomly performed the lunges to prevent the influence of an experimental sequence. Each movement was performed three times, and the mean value of the three measurements was analyzed.
Results: The analysis of muscle activities in the thigh during the three lunge movements showed statistically significantly higher muscle activity of biceps femoris in WL and NL than BL. Moreover, the analysis of plantar force showed statistically significant differences between BL and WL and WL and NL on the medial-forefoot and medial-midfoot, as well as between BL and WL and BL and NL on the lateral-midfoot. The analysis of plantar contact pressure exhibited statistically significant differences between BL and NL and WL and NL on the medial-forefoot, as well as a statistically significant difference between WL and NL on the medial-midfoot and lateral-hindfoot.
Conclusion: This study suggests that changing the base of support during lunges can be useful to suit the purposes of various rehabilitation programs.
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KEYWORD
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Lunge, Muscle activity, Plantar pressure
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