背景:对运动的恐惧与老年人的下肢激活模式有关。然而,在考虑与跌倒相关的信心的同时,对步进策略的连续扰动的洞察是未知的。
目的:当考虑到肢体优势和跌倒功效差异时,有和没有运动恐惧症的受试者之间连续三次滑脱扰动后是否存在潜伏期时间延迟?
方法:有15名患有运动恐惧症的老年人和15名年龄和体重指数(BMI)匹配的对照受试者。受试者在三个连续的扰动(250、300和400毫秒的短途旅行)期间站在平台上,是由Bertec设备生产的。受试者完成问卷以评估其与跌倒相关的恐惧的心理特征(运动恐惧症的坦帕量表:TSK)以及改良的跌倒功效量表(FES)。延迟时间(msec)测量受试者响应翻译所花费的时间。
结果:总体而言,FES结果显示与TSK呈中度负相关(r=-0.52,p=0.004).FES有显著的组间差异(t=2.78,p=0.01)。FES表现出显著的正相关系数(范围从0.40到0.51)和显著的负相关系数(范围从-0.41到-0.61),除了缓慢的扰动。各组在连续潜伏期和肢体侧表现出显著的相互作用(F=5.84,p=0.02)。在运动恐惧症组中,优势肢快速扰动期间的潜伏期时间(F=5.53,p=0.02)明显较短。
结论:对照组在跌倒相关活动中表现出信心,但是,当考虑反复滑脱扰动后的优势肢体时,两组之间的潜伏期显着不同。运动恐惧症组显示出优势肢体的潜伏期较短,以防止潜在的跌倒风险。在患有运动恐惧症的老年人中,需要以跌倒相关的信心和改善的站立平衡来考虑肢体侧的群体互动和连续的扰动。
Fear of movement has been related to lower limb activation patterns in older adults. However, insight into consecutive perturbations on stepping strategy while considering fall-related confidence is unknown.
Are there latency time delays following three consecutive slip perturbations between subjects with and without kinesiophobia when considering limb dominance and fall efficacy differences?
There were 15 older adults with kinesiophobia and 15 age- and body mass index (BMI)-matched control subjects. The subjects stood on the platform during three consecutive perturbations (250, 300, and 400 msec excursions), which were produced by a Bertec device. The subjects completed questionnaires to evaluate the psychological features of their fall-related fear (Tampa Scale for Kinesiophobia: TSK) as well as the modified fall efficacy scale (FES). The latency times (msec) measured the time it took for a subject to respond to a translation.
Overall, the results of the FES demonstrated a moderate negative association with the TSK (r = -0.52, p = 0.004). There was a significant group difference for the FES (t = 2.78, p = 0.01). The FES demonstrated significant positive correlation coefficients (ranging from 0.40 to 0.51) and significant negative correlation coefficients (ranging from -0.41 to -0.61), except for the slow perturbations. The groups demonstrated a significant interaction on consecutive latency times and limb side (F = 5.84, p = 0.02). The latency time during the fast perturbations on the dominant limb (F = 5.53, p = 0.02) was significantly shorter in the kinesiophobia group.
The control group demonstrated confidence during fall-related activities, but the latency times were significantly different between groups when considering the dominant limb following repeated slip perturbations. The kinesiophobia group demonstrated shorter latency times on the dominant limb to protect against potential fall-risks from perturbations. The group interactions on limb side and consecutive perturbations need to be considered with fall-related confidence and improved standing balance in older adults with kinesiophobia.