고령자의 족관절 근육 양측성 수축시의 전운동 반응시간 : Premotor-time of the Ankle Muscle during Bilateral Contraction in the Elderly
Premotor-time of the Ankle Muscle during Bilateral Contraction in the Elderly
- 주제(키워드) premotor-time , fall , elderly , bilateral contraction , ankle muscle
- 발행기관 대한의용생체공학회
- 발행년도 2010
- 총서유형 Journal
- UCI G704-000351.2010.31.3.006
- KCI ID ART001455439
- 본문언어 한국어
초록/요약
The purpose of this study is to investigate the effects of sex and age and their interactions in premotor-time (PMT) of ankle muscle. Forty-eight elderly subjects (aged 65-90 years) and thirty young subjects (aged 19-27 years) participated in this study. Subject were instructed to perform maximal, voluntary, isometric, bilateral contraction of ankle muscle in reaction to auditory stimulus to determine PMT. As analysis variables, PMT, intrasubject variability of PMT and asymmetry of PMT between dominant and nondominant legs were used. As statistical analysis, two-way ANOVA was performed to assess the main effects of age group and sex and also their interactions. All variables showed significant age effects (p<0.01). However, no sex effect and interaction existed in all variables in both dominant and nondomiant legs. Theses results suggest that the PMT of ankle muscle is related to the age-related deterioration in postural control, however, not related to the sex-difference of fall incidence in the elderly population.
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