고령자와 젊은 성인의 선호속도보행 시 보행리듬 제한에 따른 보행 패턴의 변화: 기초연구

Abstract

Purpose: The purpose of this study is to compare the age-specific changes according to the gait rhythm restriction using a metronome when walking at a preferred speed for older and young adults.<BR> Method: Twenty-nine healthy young adults (age: 22.8±2 years old, 15 males & 14 females) and 24 elderly people (age: 76.5±1 years old, 11 males & 13 females, BBS score: 54.3±1) participated in the experiment. The gait experiment was configured to walk twice pre subject at a preferred speed for 6 minutes in a 50m long corridor. The gait consisted of two conditions: walking at the preferred speed (PWS) and walking at the preferred speed with metronome rhythm(PWS+met). For the analysis, 19 variables composed of 4 categories (7 spatiotemporal variables, 3 lower limb movement variables, 6 upper body movement variables, and 3 turning variables) were used. An inertial sensor system was used to measure the gait variables. Repeated measures ANOVA were performed to compare gait variables by age according to gait conditions. The significant level of hypothesis verification is set up as α =.05.<BR> Results: There was a difference in all gait categories compared between healthy older and young adults when walking at the preferred speed (p<.05). However, in the within-group comparison according to the gait rhythm restriction, there were significantly statistical differences in the time variable and the turning variable categories during metronomic walking in the case of young adults p(<.05), while there were significant differences in the spatial variable and lower limb movement categories in the case of the elderly (p<.05).<BR> Conclusion: In summary, this study provides basic data that can confirm gait adaptation patterns by age when walking using a simple cognitive-motor dual task such as a metronome.