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Gluteus Medius Muscle Activities According to Various Angle of Mediolateral Ramp During Cross Walking and One-leg Standing

다양한 각도의 경사로 횡단 조건에서 보행과 한발 서기 시 중둔근 활성도

  • Kim, Seon-Chil (Dept. of Biomedical Engineering, School of Medicine, Keimyung University) ;
  • Lee, Sang-Yeol (Dept. of Physical Therapy, Kyungsung University)
  • Received : 2017.02.13
  • Accepted : 2017.03.03
  • Published : 2017.05.31

Abstract

PURPOSE: The purpose of study was to clear up the environmental risk factor that can be easily occurred unstability of hip during gait and one leg standing at various ramp angle. METHODS: Twenties healthy males of 69 subjects is participated in this study. Participants was measured activation on gluteus medius muscle during both conditions (walk across the ramp and one leg stand in the transverse direction) of seven different angle. The measured data were analyzed using one-way ANOVA to investigate the effect of muscle activation on the each condition. The statistical analyses were performed using SPSS ver. 18.0 and p-value less than .05 were considered significant for all cases. A post-hoc test was performed by Bonferoni method. RESULTS: The study showed that more muscle activities on gluteus medius is increased by increasing the ramp angle. Post-hoc analysis demonstrated that the peak and mean of muscle activity increased significantly with a ramp angle of $15^{\circ}$ and $25^{\circ}$ during gait and one-leg stand. CONCLUSION: According to the study results, impaired balance can be easily occurred when cross walk and one-leg stand on a ramp from higher than $15^{\circ}$, and highest risk was angle of $25^{\circ}$ or more. As a people with gluteus medius muscle weakness walks a ramp, the ramp angle has a cross relationship with the impaired balance. If people with gluteus medius weakness walk on the more than $10^{\circ}$ of ramp angle, they will need a lot of attention for prevent impaired balance.

Keywords

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  3. Peroneal muscle activity during different types of walking vol.11, pp.1, 2018, https://doi.org/10.1186/s13047-018-0291-0
  4. Comparison of Trunk Strategy to Maintain Balance during the One-Leg Stance on a Medio-Lateral Ramp and an Anterior-Posterior Ramp vol.29, pp.4, 2017, https://doi.org/10.18857/jkpt.2017.29.4.223
  5. 경사로 횡단 보행 시 경사로 각도에 따른 안·바깥쪽 장딴지근의 활성 비율 변화 vol.15, pp.3, 2017, https://doi.org/10.21598/jkpnfa.2017.15.3.253