Janssen T W, van Oers C A, van der Woude L H, Hollander A P
Faculty of Human Movement Sciences, Vrije Universiteit Amsterdam, The Netherlands.
Med Sci Sports Exerc. 1994 Jun;26(6):661-70. doi: 10.1249/00005768-199406000-00002.
Forty-three men (age 33 +/- 9 yr) with spinal cord injuries (SCI) were observed during a normal workday while heart rate was recorded continuously. Physical strain was estimated using the heart rate response expressed relative to the individual heart rate reserve (%HRR). The mean physical strain during the day for group I (C4-C8, N = 9), II (T1-T5, N = 6), III (T6-T10, N = 15), and IV (T10-L5, N = 13) was 38 +/- 8, 29 +/- 12, 22 +/- 8, and 23 +/- 5%HRR, respectively. Prolonged periods (> 15 min) of high strain (> 60%HRR) that might maintain or improve physical capacity were not identified during activities of daily life (ADL), but only during sports activities. The analysis of activity-related strain revealed that specific ADL such as making transfers, entering/leaving car, and negotiating environmental barriers, provoked high levels of strain, especially in those with quadriplegia. Periods of peak strain (> 60%HRR, < 3 min) occurred frequently, also predominantly in those with quadriplegia. It was concluded that the physical strain during ADL is related to the level of lesion and is not of a magnitude and duration that would maintain or improve physical capacity. The periods of peak strain might restrict the mobility and independence of persons with SCI, and, therefore, reduce their quality of life.
43名脊髓损伤（SCI）男性（年龄33±9岁）在正常工作日期间接受观察，同时连续记录心率。使用相对于个体心率储备（%HRR）表示的心率反应来估计身体应变。I组（C4-C8，N = 9）、II组（T1-T5，N = 6）、III组（T6-T10，N = 15）和IV组（T10-L5，N = 13）白天的平均身体应变分别为38±8、29±12、22±8和23±5%HRR。在日常生活活动（ADL）期间未发现可能维持或改善身体能力的长时间（>15分钟）高应变（>60%HRR），仅在体育活动期间发现。对与活动相关的应变分析表明，特定的ADL，如转移、进出汽车和应对环境障碍，会引发高水平的应变，尤其是在四肢瘫痪者中。峰值应变期（>60%HRR，<3分钟）频繁出现，也主要出现在四肢瘫痪者中。得出的结论是，ADL期间的身体应变与损伤水平有关，其程度和持续时间不足以维持或改善身体能力。峰值应变期可能会限制SCI患者的活动能力和独立性，从而降低他们的生活质量。
