Quantitative Assessment of Upper Limb Motor Function in Ethiopian Acquired Brain Injured Patients Using a Low-Cost Wearable Sensor
Quantitative Assessment of Upper Limb Motor Function in Ethiopian Acquired Brain Injured Patients Using a Low-Cost Wearable Sensor
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DOI：
10.3389/fneur.2019.01323
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发表时间：
2019-12-12
影响因子：
3.4
通讯作者：
Zhang, Xiaorong
中科院分区：
文献类型：
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作者：
Hughes, Charmayne M. L.;Baye, Moges;Zhang, Xiaorong
获得性脑损伤给撒哈拉以南非洲的康复临床医生和卫生保健设施带来了沉重的负担。虽然可穿戴传感器有可能缓解这些问题，但许多都超出了大多数非洲人和诊所的经济能力。为了弥补这一差距，我们开发了一种低成本的腕戴式传感器（outREACH传感器），能够准确测量上肢运动学。在这项研究中，我们评估了outREACH传感器对14名患有后天性脑损伤的埃塞俄比亚人（平均年龄= 51.6 +/- 12.2岁，1名女性，13名男性）执行任务的手的敏感程度（未受损，受损）和受损水平（轻度，中度）。参与者用受损和未受损的肢体执行物体操作任务，并使用标准运动学测量（即，运动时间、光谱弧长、峰值速度、峰值加速度、平均速度、平均加速度）。总的来说，当由患者的未受损肢体执行时，运动更平滑和更快。相比之下，最大速度没有两个肢体之间的差异。此外，outREACH传感器对基于性能的上肢损伤的差异敏感。上肢Fugl-Meyer评分与运动时间、频谱弧长和峰值速度显著相关。使用outREACH传感器可以精确测量上肢运动学。outREACH传感器可以是标准化临床测量的有价值的补充，为康复临床医生提供有关初始上肢损伤水平和康复寿命期间功能变化的信息。
Acquired brain injuries place a significant burden on sub-Saharan African rehabilitation clinicians and health care facilities. While wearable sensors have the potential to alleviate these issues, many are beyond the financial capabilities of the majority of African persons and clinics. To bridge this gap, we have developed a low-cost wrist-worn sensor (the outREACH sensor) capable of accurately measuring upper limb movement kinematics. In this study we evaluated the extent to which the outREACH sensor is sensitive to the hand performing the task (unimpaired, impaired) and level of impairment (mild, moderate) in 14 Ethiopian persons with acquired brain injury (mean age = 51.6 +/- 12.2 years, 1 female, 13 male). Participants performed an object manipulation task with both the impaired and the unimpaired limb, and reaching performance was measured using standard kinematic measures (i.e., movement time, spectral arc length, peak velocity, peak acceleration, mean velocity, mean acceleration). Overall, movements were smoother and faster when performed by the patient's unimpaired limb. In contrast, maximum velocity did not differ between the two limbs. Moreover, the outREACH sensor was sensitive to differences in performance-based upper limb impairment. Fugl-Meyer assessment for upper extremity scores were significantly correlated with movement time, spectral arc length, and peak velocity. Upper limb movement kinematics can be accurately measured using the outREACH sensor. The outREACH sensor can be a valuable addition to standardized clinical measures that provides rehabilitation clinicians with information regarding initial upper limb impairment level and changes in function across the rehabilitation lifespan.