Ricci Natalia Aquaroni, de Faria Figueiredo Gonçalves Daniele, Coimbra Arlete Maria Valente, Coimbra Ibsen Bellini
Faculty of Education, Gerontology Post-Graduation Program, University of Campinas, Campinas, Brazil.
Geriatr Gerontol Int. 2009 Jun;9(2):165-71. doi: 10.1111/j.1447-0594.2009.00516.x.
To determine whether elderly subjects with distinct histories of falls presented differences concerning the influence of sensory interaction on balance.
Cross-sectional research. Ninety-six community-dwelling elderly subjects were divided into three groups, according to the history of falls within the past year (group 1, no falls; group 2, one fall; and group 3, recurrent falls). The Clinical Test of Sensory Interaction and Balance was used to evaluate the influence of sensory inputs on standing balance. The test required the subject to maintain stability during 30 s, under six conditions: (i) firm surface with eyes open; (ii) firm surface with eyes closed; (iii) firm surface with visual conflict; (iv) unstable surface with eyes open; (v) unstable surface with eyes closed; and (vi) unstable surface with visual conflict. The time expended on conditions and the number of abnormal cases were compared between groups. Each group was evaluated in relation to its performance in the progression of conditions.
More abnormal cases occurred in group 3 compared to group 1 for conditions (iv) and (v); and compared to group 2 for condition (iv). Group 3 remained less time than group 1 under conditions (iv), (v) and (vi). Groups 1, 2 and 3 presented relevant decrements in trial duration from conditions (iv) to (v). For group 3, a significant decay was also noted from condition (i) to (ii).
Sensorial interaction in the elderly varies according to their history of falls. Thus, it is possible to correctly guide the rehabilitation process and to prevent sensorial decays according to an individual's history of falls.
确定有不同跌倒史的老年受试者在感觉交互作用对平衡的影响方面是否存在差异。
横断面研究。96名社区居住的老年受试者根据过去一年的跌倒史分为三组（第1组，无跌倒；第2组，跌倒一次；第3组，反复跌倒）。采用感觉交互作用与平衡临床测试来评估感觉输入对站立平衡的影响。该测试要求受试者在六种条件下保持30秒的稳定性：（i）睁眼站在坚实表面上；（ii）闭眼站在坚实表面上；（iii）站在坚实表面上且存在视觉冲突；（iv）睁眼站在不稳定表面上；（v）闭眼站在不稳定表面上；（vi）站在不稳定表面上且存在视觉冲突。比较各组在不同条件下花费的时间和异常病例数。根据各组在条件进展中的表现进行评估。
在条件（iv）和（v）下，第3组比第1组出现更多异常病例；在条件（iv）下，第3组比第2组出现更多异常病例。在条件（iv）、（v）和（vi）下，第3组保持稳定的时间比第1组短。从条件（iv）到（v），第1组、第2组和第3组的试验持续时间均有显著下降。对于第3组，从条件（i）到（ii）也观察到显著下降。
老年人的感觉交互作用因跌倒史而异。因此，根据个体的跌倒史可以正确指导康复过程并预防感觉衰退。
