The Modified Strain Index: A Composite Measure of Injury Risk for Signers
The Modified Strain Index: A Composite Measure of Injury Risk for Signers
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DOI：
10.1080/00222895.2020.1806778
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发表时间：
2020-08-14
影响因子：
1.4
通讯作者：
Vidt, Meghan E.
中科院分区：
文献类型：
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作者：
Roman, Gretchen;Peterson, Daniel S.;Vidt, Meghan E.
高达 81% 手语流利的人（手语者）表示感到疼痛。非母语手语者（有非手语、非聋哑父母）报告比母语人士（>= 1 手语、聋哑父母）承受更大的疼痛。本研究的目的是根据先前确定的手语者独特的生物力学，开发一种综合的伤害风险衡量标准（手语者的修改后的应变指数），并检查本地人和非本地人亚组的分数。据推测，非本地人比本地人有更大的疼痛和更高的综合得分。十名本地人和 15 名非本地人在手语时使用数字量表来评估疼痛。测量措施包括“微”休息、肌肉激活、弹道签名、非中立关节角度和工作范围。描述性统计用于创建分类评级和后向消除多元线性回归，以建立生物力学任务的排名顺序。对参与者的表现进行评分，并根据任务的乘数乘积得出分数。疼痛强度与综合评分相关（r = 0.46；p = 0.02），但本地人（评分 = 13.39 +/- 3.1）和非本地人（评分 = 19.55 +/- 4.7；p = 0.34）之间没有差异。这项工作提出了一种将多种生物力学因素纳入手语者独有的单一复合测量中的方法，但是需要进一步基于证据的调整来增强其稳健性。
Up to 81% of individuals who are fluent in sign language (signers) report pain. Non-native signers (with non-signing, non-deaf parents) report greater pain than natives (>= 1 signing, deaf parent). The goal of this study was to develop a composite measure of injury risk (the modified Strain Index for signers) based on previously identified biomechanics unique to signers and examine scores across sub-groups of natives and non-natives. Non-natives were hypothesized to have greater pain and higher composite scores than natives. Ten natives and 15 non-natives used a numeric scale to rate pain while signing. Measures included 'micro' rests, muscle activation, ballistic signing, non-neutral joint angle, and work envelope. Descriptive statistics were used to create categorical ratings and backward elimination multiple linear regression to establish rank order of the biomechanical tasks. Participant performance was rated, and the product of the multipliers across tasks created a score. Pain intensity was associated with the composite score (r = 0.46; p = 0.02), however there was no difference between natives (score = 13.39 +/- 3.1) and non-natives (score = 19.55 +/- 4.7; p = 0.34). This work presents an approach to incorporate multiple biomechanical factors into a single, composite measure unique to signers, however further evidence-based adjustments are needed to enhance its robustness.