title: The effect of chinese yuanji-dance on dynamic balance and the associated attentional demands in elderly adults.
abstract: Walking performance changes with age. This has implications for the problem of falls in older adults. The aim of this study was to investigate the effects of Yuanji-Dance practice on walking balance and the associated attention demand in healthy elderly. Fifteen community-dwelling elderly (comparison group, no regular exercise habit) and fifteen Yuanji- Dance elderly (exercise group, dancing experience: 5.40 ± 1.95 years), aged 60-70 years, were included in this study. The subjects in exercise group participated in a 90-minute Yuanji-Dance practice at least three times per week and the comparison group continued their normal daily physical activity. Walking balance measures (including walking velocity, step length, step width, and percentage of time spent in double limb support, COM velocity and COM-COP inclination angles) and attentional demand tests (button reaction time and accuracy) were conducted under different conditions. Our results showed that stride lengths, walking velocities, peak A/P velocities (AP V) of the COM, medial COM-COP inclination (M angle) angles, reaction time, and accuracy decrease significantly as the dual-task (walking plus hand button pressing tasks) applied for either the comparison or exercise groups. These results demonstrated that walking performance is attenuated in our elderly participants as the cognitive tasks applied. Analysis also identified a significantly faster RT for our exercise group both in standing and walking conditions. This may indicate that physical exercise (Yuanji-Dance) may have facilitating effects on general cognitive and perceptual- motor functions. This implies that Chinese Yuanji-Dance practice for elderly adults may improve their personal safety when walking especially under the condition of multiple task demand. Key pointsThe purpose of this study was to investigate the training effects of a Chinese traditional exercise, Yuanji-Dance, on walking balance and the associated attention demand in the healthy elderly.Walking performance is attenuated in elderly participants as the cognitive tasks applied.A significantly faster reaction time for our exercise group both in standing and walking conditions.Yuanji-Dance exercise training can improve the information processing speed of elderly people and has no influence of the dynamic walking balance.
authors.affiliation: Department of Sports Medicine.
authors.forename: Wen-Lan
authors.initials: WL
authors.lastname: Wu
authors.forename: Ta-Sen
authors.initials: TS
authors.lastname: Wei
authors.forename: Shen-Kai
authors.initials: SK
authors.lastname: Chen
authors.forename: Jyh-Jong
authors.initials: JJ
authors.lastname: Chang
authors.forename: Lan-Yuen
authors.initials: LY
authors.lastname: Guo
authors.forename: Hwai-Ting
authors.initials: HT
authors.lastname: Lin
keywords: Yuanji-Dance; attention; balance; exercise