The purpose of this study is to verify the effect of one-leg standing exercise in narrow ground for apply to foot arches increase and ankle joint injury prevention and rehabilitation exercises. Compare the muscles activity of the peroneus brevis(PB), peroneus longus(PL), tibialis anterior(TA), and a...
The purpose of this study is to verify the effect of one-leg standing exercise in narrow ground for apply to foot arches increase and ankle joint injury prevention and rehabilitation exercises. Compare the muscles activity of the peroneus brevis(PB), peroneus longus(PL), tibialis anterior(TA), and abductor hallucis(AH) in the normal one-leg stance(OLS) and narrow one-leg stance(N-OLS) with the support surface narrowed by the hallux, the first metatarsophalangeal joint, and the medial half of the calcaneus bone. N-OLS is one of the ways to destabilize the base of support, which is the exercise that sets the support surface narrowly inward. It is the exercise in situation similar to the injury mechanism of the ankle inversion sprains and the weight intensively applied to the medial longitudinal arch. Forty-five healthy high school students with no surgical experience in lower extremities and no vestibular organ or visual disturbance were selected as subjects, and two dropouts occurred and 43 data were finally collected. The muscular activity of PB, PL, TA and AH was first measured in OLS using surface electromyogram equipment. And at the end of a flat, hard mat about 3cm high, the activity of the same four muscles was measured and standardized by the %RVC method in the N-OLS, supported only by the hallux, the first metatarsophalangeal joint, and the medial half of the calcaneus of the dominant leg. Paired t-test was conducted to verify the significant difference between the two groups, and the significance level of hypothesis verification was set to p<.05. The results of this study are as follows. 1. Comparing the activity of PB showed significantly higher muscle activity in N-OLS groups than in OLS groups (p<.001). 2. Comparing the activity of PL showed significantly higher muscle activity in N-OLS groups than in OLS groups (p<.001). 3. Comparing the activity of TA showed significantly higher muscle activity in N-OLS groups than in OLS groups (p<.01). 4. Comparing the activity of AH resulted in significantly higher muscle activity in the N-OLS group than in the OLS group (p<.01). Conclusion the N-OLS showed significantly higher activity in both PB, PL, TA and AH than in OLS. Therefore, the N-OLS is effective as an exercise for increasing the arch of the foot through the simultaneous activation of AH, TA, and PL when compared with the OLS. It is also effective for improve balance ability through exercise on the base surface where left and right instability is further increased by providing a narrow ground within one foot. In addition, it is thought that it will be more effective in the ankle stability exercise through the strengthening of PB and PL and the proprioceptive sensory stimulation of the ankle joint under conditions similar to the mechanism of injury of the ankle sprain.
The purpose of this study is to verify the effect of one-leg standing exercise in narrow ground for apply to foot arches increase and ankle joint injury prevention and rehabilitation exercises. Compare the muscles activity of the peroneus brevis(PB), peroneus longus(PL), tibialis anterior(TA), and abductor hallucis(AH) in the normal one-leg stance(OLS) and narrow one-leg stance(N-OLS) with the support surface narrowed by the hallux, the first metatarsophalangeal joint, and the medial half of the calcaneus bone. N-OLS is one of the ways to destabilize the base of support, which is the exercise that sets the support surface narrowly inward. It is the exercise in situation similar to the injury mechanism of the ankle inversion sprains and the weight intensively applied to the medial longitudinal arch. Forty-five healthy high school students with no surgical experience in lower extremities and no vestibular organ or visual disturbance were selected as subjects, and two dropouts occurred and 43 data were finally collected. The muscular activity of PB, PL, TA and AH was first measured in OLS using surface electromyogram equipment. And at the end of a flat, hard mat about 3cm high, the activity of the same four muscles was measured and standardized by the %RVC method in the N-OLS, supported only by the hallux, the first metatarsophalangeal joint, and the medial half of the calcaneus of the dominant leg. Paired t-test was conducted to verify the significant difference between the two groups, and the significance level of hypothesis verification was set to p<.05. The results of this study are as follows. 1. Comparing the activity of PB showed significantly higher muscle activity in N-OLS groups than in OLS groups (p<.001). 2. Comparing the activity of PL showed significantly higher muscle activity in N-OLS groups than in OLS groups (p<.001). 3. Comparing the activity of TA showed significantly higher muscle activity in N-OLS groups than in OLS groups (p<.01). 4. Comparing the activity of AH resulted in significantly higher muscle activity in the N-OLS group than in the OLS group (p<.01). Conclusion the N-OLS showed significantly higher activity in both PB, PL, TA and AH than in OLS. Therefore, the N-OLS is effective as an exercise for increasing the arch of the foot through the simultaneous activation of AH, TA, and PL when compared with the OLS. It is also effective for improve balance ability through exercise on the base surface where left and right instability is further increased by providing a narrow ground within one foot. In addition, it is thought that it will be more effective in the ankle stability exercise through the strengthening of PB and PL and the proprioceptive sensory stimulation of the ankle joint under conditions similar to the mechanism of injury of the ankle sprain.
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