Anthropometric and biomechanical characteristics of body segments in persons with spinal cord injury
Anthropometric and biomechanical characteristics of body segments in persons with spinal cord injury
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DOI：
10.1016/j.jbiomech.2017.01.036
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发表时间：
2017-04-11
影响因子：
2.4
通讯作者：
Troy, K. L.
中科院分区：
文献类型：
--
作者：
Fang, Y.;Morse, L. R.;Troy, K. L.
患有脊髓损伤(SCI)的人瘫痪的四肢会出现骨骼和肌肉的丧失，在受伤后的头三年里，这种情况最为迅速和严重。通过治疗性物理活动恢复机械负荷可能会减缓或逆转脊髓损伤后的骨丢失，然而，如果没有准确的生物力学模型，就不能开发治疗靶点。肥胖在脊髓损伤人群中很普遍，它改变了身体成分，并进一步影响了这些模型的参数。本文分析了39例急性脊髓损伤患者和61例慢性脊髓损伤患者的临床全身双能X线骨密度仪数据，获得了肥胖和非肥胖者的节段质量、质心位置和旋转半径等人体测量参数。男性慢性脊髓损伤患者躯干质量增加3.2%，小腿质量减少1.8%，但节段重心和旋转半径无明显变化。慢性脊髓损伤患者躯干瘦块占58.6%，急性脊髓损伤组瘦块占66.6%(p=0.01)，各节段均有显著改变。肥胖与躯干质量比例增加3.1%BW、大腿和上臂重心近端移位、大腿和小腿旋转半径改变相关。在生物力学研究中，考虑到肥胖和损伤持续时间，这里提供的数据可以用来准确地表示脊髓损伤人群的人体测量学。(C)2017爱思唯尔有限公司。保留所有权利。
People with spinal cord injury (SCI) experience bone and muscle loss in their paralyzed limbs that is most rapid and severe in the first 3 years after injury. Restoration of mechanical loading through therapeutic physical activity may potentially slow or reverse post-SCI bone loss, however, therapeutic targets cannot be developed without accurate biomechanical models. Obesity is prevalent among SCI population, and it alters body composition and further affects parameters of these models. Here, clinical whole body dual energy X-ray absorptiometry data from people with acute (n = 39) and chronic (n = 61) SCI were analyzed to obtain anthropometric parameters including segment masses, center of mass location, and radius of gyration for both obese and non-obese individuals. Chronic SCI was associated with higher normalized trunk mass of 3.2%BW and smaller normalized leg mass of 1.8%BW in males, but no significant changes in segment centers of mass or radius of gyration. People with chronic SCI had 58.6% lean mass in the trunk, compared to 66.6% lean mass in those with acute SCI (p = 0.01), with significant changes in all segments. Obesity was associated with an increase in trunk mass proportion of 3.1%BW, proximal shifts in thigh and upper arm center of mass, and changes to thigh and shank radius of gyration. The data presented here can be used to accurately represent the anthropometrics of SCI population in biomechanical studies, considering obesity and injury duration. (C) 2017 Elsevier Ltd. All rights reserved.