Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

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Effects of Gastrocnemius Muscle Length on the Dynamic Balance and Antero-posterior Pressure Distribution of Foot

장딴지근 길이가 동적 균형 및 발바닥의 앞뒤 압력 분포에 미치는 영향

  • 이원휘 (전주비전대학교 물리치료학과)
  • Received : 2019.03.06
  • Accepted : 2019.06.07
  • Published : 2019.06.30
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Abstract

The purpose of this study was investigate the effect of gastrocnemius(GCM) muscle length on the dynamic balance and antero-posterior pressure distribution of foot. Thirty subjects were recruited and each subject was classified with control experimental and control group according to GCM muscle length. The experimental group included subjects with shortness of GCM muscle length, the control group included subjects with normal length of GCM. The dynamic balance and antero-posterior pressure distribution of foot were measured by Biorescue equipment. To evaluate dynamic balance, we collected data of limit of stability in antero-posterior direction. We analyzed the data by using independent t-test. The alpha level was set 0.05. The results showed that the dynamic balance and antero-posterior pressure distribution of foot were significantly different between two groups (p<0.05). This study suggests that the shortness of GCM affects anterior limited of stability in dynamic balance and anterior pressure distribution of foot. Therefore, it is important to maintain optimal GCM muscle length for normal balance ability and prevention of musculoskeletal disease.

본 연구의 목적은 장딴지근 길이가 동적 균형과 발의 앞뒤 압력분포에 어떤 영향을 미치는지 알아보는 것이다. 연구기간은 2018년 12월 3일부터 21일까지로 30명의 연구대상자를 장딴지근 길이 검사를 통해 장딴지근의 정상길이를 가진 대조군과 장딴지근 길이의 단축이 있는 실험군으로 분류하였다. 동적 균형과 발의 앞뒤 압력분포는 Biorescue장비를 사용하여 평가하였으며 동적 균형을 평가하기 위해 앞쪽과 뒤쪽 방향의 안정성 한계를 데이터로 수집하였다. 군간 동적 균형과 발의 앞뒤 압력분포에 유의한 차이가 있는지 알아보기 위하여 독립 t 검정을 이용하여 분석하였고, 통계학적 유의수준은 0.05로 하였다. 연구 결과 군간 동적 균형과 발의 앞뒤 압력분포는 유의한 차이가 있었다(p<0.05). 이러한 연구 결과를 통해 장딴지근 길이의 단축은 앞쪽으로 동적 균형 및 발의 앞쪽 압력 분포에 영향을 미친다는 것을 제안하고 그러므로 근골격계 질환 예방과 정상적인 균형능력을 위해 장딴지근의 적절한 길이를 유지하는 것은 중요하다.

Keywords

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Fig. 1. Force plate of BioRescue equipment

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Fig. 2. GCM muscle length test

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Fig. 3. A. Measurement of dynamic balance, B. Measurement of antero-posterior presure distribution of foot

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Fig. 5. Comparison of dynamic balance between experimental and control group

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Fig. 6. Comparison of antero-posterior pressure distribution of foot between experimental and control group

Table 1. General characteristics of subjects

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Table 2. Comparison of dynamic balance between experimental and control group

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Table 3. Comparison of antero-posterior pressure distribution of foot between experimentaland control group

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