Division of Geriatric Medicine, Department of Health Sciences, Lund University, Lund, Sweden. eva.bramell-risberg @ med.lu.se
Dement Geriatr Cogn Disord. 2010;29(5):457-66. doi: 10.1159/000305093. Epub 2010 May 26.
BACKGROUND/AIMS: Motor impairment is an important aspect of cognitive decline in older adults. It has been suggested that complex motor control is affected earlier than gross motor control. The aims were to investigate if complex hand motor function was more affected than gross motor function in cognitively impaired older subjects, and to present reference values.
Alternating forearm movements and grip strength were studied in 301 cases, 419 intermediates and 1,207 controls, aged 60-93 years, controlling for demographic, health-related and functional factors and comorbidity. Global cognitive function was assessed by the Mini-Mental State Examination, and episodic memory by 3-word delayed recall. Grip strength was assessed by the Grippit(R). The frequency of alternating movements during 10 s was registered electronically.
Alternating movements but not grip strength was associated with cognitive impairment (right: p = 0.006; left: p = 0.022). The mean alternating movements for the 70-year-old male cases compared to the controls were 2.3 versus 2.5 Hz for the right, and 2.2 versus 2.4 Hz for the left arm (p < 0.05), and for the 60-year-old women 2.0 versus 2.3 Hz for the right arm (p < 0.05).
Complex but not gross hand motor function is associated with early cognitive impairment.
背景/目的：运动障碍是老年人认知能力下降的一个重要方面。有人认为，复杂的运动控制比粗大运动控制更早受到影响。本研究旨在调查认知障碍的老年人中，复杂手部运动功能是否比粗大运动功能受影响更大，并提供参考值。
对 301 例病例、419 例中间病例和 1207 例对照（年龄 60-93 岁）进行了前臂交替运动和握力测试，控制了人口统计学、健康相关和功能因素以及合并症。使用简易精神状态检查（Mini-Mental State Examination）评估整体认知功能，使用 3 词延迟回忆评估情景记忆。使用 Grippit（R）评估握力。通过电子方式记录 10 秒内交替运动的频率。
交替运动而不是握力与认知障碍相关（右侧：p = 0.006；左侧：p = 0.022）。与对照组相比，70 岁男性病例的右侧和左侧手臂的平均交替运动频率分别为 2.3 Hz 和 2.5 Hz（p < 0.05），60 岁女性病例的右侧手臂的平均交替运动频率为 2.0 Hz 和 2.3 Hz（p < 0.05）。
复杂的手部运动功能，而非粗大的手部运动功能与早期认知障碍有关。
