Guadagnin E C, da Rocha E S, Mota C B, Carpes F P
Applied Neuromechanics Research Group, Laboratory of Neuromechanics, Federal University of Pampa, Uruguaiana, RS, Brazil; Exercise Research Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
Applied Neuromechanics Research Group, Laboratory of Neuromechanics, Federal University of Pampa, Uruguaiana, RS, Brazil; Laboratory of Biomechanics, Federal University of Santa Maria, Santa Maria, RS, Brazil.
Gait Posture. 2015 Sep;42(3):251-6. doi: 10.1016/j.gaitpost.2015.05.012. Epub 2015 Jul 3.
This study investigated the effects of regular exercise and dual tasking on bilateral spatial and temporal parameters of obstacle negotiation in elderly women. Sedentary (n=12) and physically active (n=12) elderly women volunteered to participate in this study. Gait kinematics were recorded during obstacle crossing when performing a dual task and when not performing a dual task. Physically active participants crossed obstacles more safely, in terms of clearance or distance to or over the obstacle, both with and without dual tasking, and usually for both lead and trail legs. Performing the dual task increased toe distance, and decreased heel distance and gait speed in the active participants, and increased toe clearance and heel distance, and decreased gait speed in the sedentary participants. Differences between preferred and non-preferred leg were accentuated for toe clearance in the lead limb. These results suggest that specialized exercises may not be needed for improvement in obstacle avoidance skills in the elderly, and participation in multi-activities, including aerobic exercises, may be sufficient.
本研究调查了规律运动和双重任务对老年女性双侧空间和时间参数的影响。久坐不动（n = 12）和身体活跃（n = 12）的老年女性自愿参与本研究。在执行双重任务和不执行双重任务时，记录她们穿越障碍物时的步态运动学。无论是在执行双重任务还是不执行双重任务的情况下，身体活跃的参与者在越过障碍物时，就间隙或与障碍物的距离而言，都能更安全地穿越，且通常双腿（主导腿和跟随腿）都是如此。执行双重任务增加了活跃参与者的脚趾间距，减小了脚跟间距和步态速度，而在久坐不动的参与者中增加了脚趾间隙和脚跟间距，并降低了步态速度。主导肢体的脚趾间隙在优势腿和非优势腿之间的差异更为明显。这些结果表明，老年人可能不需要专门的练习来提高避障技能，参与包括有氧运动在内的多种活动可能就足够了。
