The Korean Journal of Physical Education (한국체육학회지)

Korean Alliance for Health: Physical Education: Recreation:and Dance (한국체육학회)
권호 표지

The effect of the stair heights on the lower extremity joint moment in stair-ascent activity of elderly persons

노인의 계단 오르기 활동시 계단 높이가 지지기 동안의 하지 관절 모멘트에 미치는 효과

Eun, Seon-Deok;Lee, Yeong-Seok
은선덕;이영석

  • Published : 20040000
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Abstract

The purpose of this study was to investigate the effect of the stair heights on the lower extremity joint moment in stair-ascent activity of elderly persons. Data were collected by 3-D cinematography and force platform. Eight male eldery persons were participated in this experiment. All subjects performed a stair-ascent in four different heights of stairs (10, 14, 18, 22cm) having 5 step staircase. The changes of lower extremity joint moments were analyzed during stance phase. The results on the stair-ascent activity of elderly persons were as follows: First, maximum plantar flexion moment appeared in the 'forward continuance' phase for stair A and B, it occurred in the 'pull-up' phase for stair C and D. Second, it was shown that the maximum inversion moment of the ankle joint and abduction moment of knee joint were the smallest at stair B. In addition to, the maximum abduction moment of knee joint increased as the stair height become higher. Third, the maximum extension moment of knee joint was the greatest at stair B. Fourth, extension moment of hip joint in the 'pull-up' phase decreased significantly for stair C and D. The maximum extension moment at stair A and stair B was extremely great. Fifth, remarkable value of adduction moment occurred at hip joints and maximum adduction moment increased significantly at stair C. The results of this study demonstrated that the ascent activity at general heights of stair for elderly persons tended to be discomfortable. Moreover, the results indicate that effective height of stairs should be between 14 and 18cm in the place for elderly persons.

Keywords

References

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