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발 안정성 훈련이 동적 균형과 하체 근 활성도에 미치는 급성 적응 효과

Effects of foot stability training on dynamic balance and lower extremity muscle activation in acute adjustments

초록/요약

The purpose of this study is to analyze the effects on dynamic balance ability and lower extremity muscle activation through foot stability training performed by healthy adult men and women, and thereby to provide basic data about safe and effective training for foot and ankle stability before lower body exercise. Test subjects were 18 healthy adult males and females (9 males, 9 females) who had neither been diagnosed with musculoskeletal disorders in the past 6 months nor had vestibular organs or visual impairments. After performing foot stability training, the immediate effects of the dominant leg were observed along with dynamic balance ability. Muscle activation of rectus femoris, vastus medialis, vastus lateralis, gluteus medius, and abductor hallucis was identified through split squat motion. In addition, gender differences in effectiveness after intervention were also identified. The foot stability training consisted of a sequential training program that activates the foot intrinsic and extrinsic muscles of foot. The y-balance test was performed to measure the dynamic balance ability. The maximum distance of extended positions in three directions anterior, postero-medial, and postero-lateral were measured. The distance of each direction and the composite reach distance were then normalized. Lower extremity muscle activation was normalized to %MVIC value converted from the percentage of MVIC value. Paired T-test was performed to compare the dynamic balance and muscle activation of all 18 subjects. Two-way repeated measures ANOVA was performed to analyze the interactions between the male and female groups. The significance level of the hypothesis test was set to P<0.05. The results of this study are as follows. 1. Lower extremity muscle activation significantly increased in rectus femoris, vastus medialis, vastus lateralis, and abductor hallucis (P<0.05). 2. There was no gender difference in muscle activation. 3. Dynamic balance ability significantly increased in three directions anterior, postero-medial, and postero-lateral along with the composite reach distance (P<0.05). 4. There was no gender difference in dynamic balance ability. In conclusion, foot stability training helps improve the dynamic balance ability of men and women, stabilize the feet and ankles, and increase lower extremity muscle activation. Therefore, foot stability training can be used for safe and effective training in lower body exercises.

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목차

I. 서론 1
1. 연구의 필요성 1
2. 연구의 목적 5
3. 연구의 가설 5
4. 연구의 제한점 6
II. 이론적 배경 7
1. 발 안정성이란 7
2. 발의 구조와 기능 9
3. 발 안정성 훈련 13
III. 연구 방법 18
1. 연구 대상 18
2. 연구 기간 20
3. 연구 설계 20
4. 실험 도구 22
5. 측정 방법 23
1) 동적 균형 능력 측정 23
2) 근 활성도 측정 25
6. 운동 프로그램 29
1) 발바닥 마사지와 발가락 스트레칭 29
2) 권양기 효과를 적용한 좁은 간격 스쿼트 30
3) 발가락 들고 누르며 종아리 들어 올리기 32
4) 한 다리로 균형 잡고 회전하기 34
7. 자료처리 35
IV. 연구 결과 36
1. 중재 전후의 근 활성도 차이 비교 36
2. 성별에 따른 중재 전후의 근 활성도 차이 비교 37
3. 중재 전후의 동적 균형 능력 차이 비교 42
4. 성별에 따른 중재 전후의 동적 균형 능력 차이 비교 44
V. 논의 49
1. 하체 근 활성도에 미치는 영향 49
2. 동적 균형 능력에 미치는 영향 53
VI. 결론 및 제언 56
참고문헌 58
부록 69

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