Department of Physical Therapy, College of Health Science, Gachon University, 191 Hambangmoe-ro, Yeonsu-gu, Incheon 21936, Korea.
Int J Environ Res Public Health. 2022 Jun 26;19(13):7842. doi: 10.3390/ijerph19137842.
This study aimed to determine the change in saccadic eye movement (SEM) speed according to age (young older; 65-72 years, middle older; 73-80 years, old older: over 81 years) in the elderly and identify the correlation between SEM speed and balance ability. We recruited 128 elderly individuals and measured their SEM speed and balance. The SEM speed was measured to allow the target to appear once every 2 s (0.5 Hz), twice per second (2 Hz), or thrice per second (3 Hz). The SEM performance time was 1 min with a washout period of 1 min. Balance ability was measured using the functional reach test (FRT), timed up-and-go test (TUG), and walking speed (WS). As age increased, FRT, TUG, and WS decreased and SEM speed was significantly decreased in old older than in young older adults at 3 HZ. In all participants, the 3 Hz SEM speed was significantly correlated with TUG and WS. Therefore, SEM speed may be inadequate or decreased in response to rapid external environmental stimuli and may be a factor that deteriorates the ability to balance in older adults.
本研究旨在确定老年人的眼跳（SEM）速度随年龄（年轻老年人；65-72 岁，中年老年人；73-80 岁，年老老年人：81 岁以上）的变化，并确定 SEM 速度与平衡能力之间的相关性。我们招募了 128 名老年人，测量了他们的 SEM 速度和平衡能力。SEM 速度的测量方法是允许目标每 2 秒出现一次（0.5 Hz）、每秒两次（2 Hz）或每秒三次（3 Hz）。SEM 表现时间为 1 分钟，洗脱期为 1 分钟。平衡能力使用功能性伸展测试（FRT）、计时起身行走测试（TUG）和行走速度（WS）进行测量。随着年龄的增长，FRT、TUG 和 WS 降低，并且在 3 Hz 时，年老老年人的 SEM 速度明显低于年轻老年人。在所有参与者中，3 Hz SEM 速度与 TUG 和 WS 显著相关。因此，SEM 速度可能不足以应对快速的外部环境刺激，并且可能是老年人平衡能力恶化的一个因素。
