Alagha M Abdulhadi, Alagha Mahmoud A, Dunstan Eleanor, Sperwer Olaf, Timmins Kate A, Boszczyk Bronek M
Academic Orthopaedics, Trauma and Sports Medicine, Queen's Medical Centre, The University of Nottingham, Nottingham, NG7 2UH, UK.
Medical, Veterinary and Life Sciences College, University of Glasgow, Dental Hospital, Glasgow, G2 3JZ, UK.
Eur Spine J. 2017 Apr;26(4):1298-1304. doi: 10.1007/s00586-017-4949-2. Epub 2017 Jan 19.
To set a baseline measurement of the number of hand flexion-extension cycles and analyse the degree of motion in young healthy individuals, measured by leap motion controller (LMC), besides describing gender and dominant hand differences.
Fifty healthy participants were asked to fully grip-and-release their dominant hand as rapidly as possible for a maximum of 3 min or until subjects fatigued, while wearing a non-metal wrist splint. Participants also performed a 15-s grip-and-release test. An assessor blindly counted the frequency of grip-and-release cycles and magnitude of motion from the LMC data.
The mean number of the 15-s G-R cycles recorded by LMC was: 47.7 ± 6.5 (test 1, LMC); and 50.2 ± 6.5 (test 2, LMC). In the 3-min test, the total number of hand flexion-extension cycles and the degree of motion decreased as the person fatigued. However, the decline in frequency preceded that of motion's magnitude. The mean frequency of cycles per 10-s interval decreased from 35.4 to 26.6 over the 3 min. Participants reached fatigue from 59.38 s; 43 participants were able to complete the 3-min test.
Normative values of the frequency of cycles and extent of motion for young healthy individuals, aged 18-35 years, are provided. Future work is needed to establish values in a wider age range and in a clinical setting.
除了描述性别和优势手差异外，设定年轻健康个体手部屈伸周期数的基线测量值，并通过Leap Motion控制器（LMC）分析其运动程度。
50名健康参与者被要求在佩戴非金属手腕夹板的情况下，尽可能快速地完全握紧并松开其优势手，持续3分钟或直至疲劳，同时还进行了15秒的握紧并松开测试。一名评估人员从LMC数据中盲目计算握紧并松开周期的频率和运动幅度。
LMC记录的15秒握紧-松开周期的平均数量为：47.7±6.5（测试1，LMC）；50.2±6.5（测试2，LMC）。在3分钟测试中，随着个体疲劳，手部屈伸周期总数和运动程度下降。然而，频率下降先于运动幅度下降。在3分钟内，每10秒间隔的平均周期频率从35.4降至26.6。参与者从59.38秒开始疲劳；43名参与者能够完成3分钟测试。
提供了18至35岁年轻健康个体的周期频率和运动程度的标准值。未来需要开展工作以确定更广泛年龄范围和临床环境中的数值。
