Grip force regulation during pinch grip lifts under somatosensory guidance: Comparison between people with stroke and healthy controls
Grip force regulation during pinch grip lifts under somatosensory guidance: Comparison between people with stroke and healthy controls
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DOI：
10.1016/j.apmr.2005.11.018
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发表时间：
2006-03-01
影响因子：
4.3
通讯作者：
Matyas, TA
中科院分区：
文献类型：
--
作者：
Blennerhassett, JM;Carey, LM;Matyas, TA
目的：比较中风患者在体感引导下进行捏握任务的时机和握力应用，并确定中风后握力调节受损的特征。设计：配对对照组。设置：大学研究实验室。参与者：45 名能够使用捏握拿起笔盖并积极参与康复的中风患者，以及 45 名没有影响手部神经系统疾病或肌肉骨骼或皮肤损伤的成年人，年龄、性别和年龄相匹配。干预措施：不适用。主要结果指标：在捏握举起和大胆过程中施加握力的时间和大小。结果：中风患者中大约一半的对侧（相关）手会延长握持和举起物体的时间，并且在开始举起之前握力过大。还观察到波动的不规则力和握把安全裕度的适应性降低。中风后，过高的安全裕度并不占主导地位。握力和举力的极度缓慢和混乱的顺序以及难以维持稳定的握力是严重功能障碍的特征。结论：延迟的握力制定和可变的握力施加是中风后握力功能障碍的关键特征。
Objectives: To compare the timing and grip force application in a pinch grip task performed under somatosensory guidance in stroke and matched controls and to identify characteristics of impaired grip force regulation after stroke.Design: Matched-pairs control group.Setting: University research laboratory.Participants: Forty-five people with stroke who could pick up a pen lid using a pinch grip and actively participated in rehabilitation and 45 adults without neurologic conditions or musculoskeletal or skin impairments affecting the hand, matched for age, sex, and hand dominance.Interventions: Not applicable.Main Outcome Measures: Timing and magnitude of grip forces applied during pinch grip lift and bold.Results: Prolonged time to grip and lift objects, and excessive grip force prior to commencing the lift occurred in approximately half of the contralesional (involved) hands of people with stroke. Fluctuating irregular forces and reduced adaptation of the grip safety margin were also observed. Excessive safety margins were not predominant after stroke. Extreme slowing and disorganized sequencing of the grip and lifting forces and difficulty maintaining a stable grip characterized severe dysfunction.Conclusions: Delayed grip formulation and variable grip force application are key characteristics of grip dysfunction after stroke.