EFFECTS OF WHEELCHAIR DESIGN ON METABOLIC AND HEART-RATE RESPONSES DURING PROPULSION BY PERSONS WITH PARAPLEGIA
EFFECTS OF WHEELCHAIR DESIGN ON METABOLIC AND HEART-RATE RESPONSES DURING PROPULSION BY PERSONS WITH PARAPLEGIA
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DOI：
10.1093/ptj/67.9.1355
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发表时间：
1987-09-01
期刊：
影响因子：
3.2
通讯作者：
WHITE, TP
中科院分区：
文献类型：
--
作者：
HILBERS, PA;WHITE, TP
本研究的目的是调查截瘫患者对不同设计轮椅的推进力的代谢和心率 (HR) 反应。研究人员对八名男性和一名女性截瘫坐轮椅的成年人进行了研究。每个受试者在水平木质表面上以 1 至 3 m/sec 的四种速度推动传统轮椅和运动轮椅。获得了稳态耗氧量 (V̇o2) 和运动后立即心率测量值。 V̇o2(L/min) 作为速度 (m/sec) 函数的线性回归分析显示，传统座椅的斜率和相关系数分别为 0.614 和 0.93，运动座椅的斜率和相关系数分别为 0.510 和 0.96。这些关系的截距在轮椅设计之间没有差异。数据分析显示，椅子设计之间的速度和工作效率之间的关系没有差异。因此，以特定速度推动运动椅的能源成本比传统椅子低 17%。运动椅的更高效率归因于轮椅设计的差异，而不是设备的总质量。
The purpose of this study was to investigate the metabolic and heart rate (HR) responses of individuals with paraplegia to propulsion in wheelchairs of different design. Eight male and one female wheelchair-bound adults with paraplegia were studied. Each subject propelled a conventional wheelchair and a sports wheelchair on a level wooden surface at four velocities ranging from 1 to 3 m/sec. Steady-rate oxygen consumption (V̇o2) and immediate postexercise HR measurements were obtained. A linear regression analysis of V̇o2(L/min) as a function of velocity (m/sec) revealed a slope and correlation coefficient of 0.614 and .93, respectively, for the conventional chair, and 0.510 and .96, respectively, for the sports chair. The intercepts of these relationships did not differ between wheelchair designs. The data analysis revealed no difference between chair designs in the relationship between velocity and work rate. Thus, the energy cost of propelling the sports chair at a specific velocity was 17% less than that of the conventional chair. The greater efficiency of the sports chair is attributed to differences in wheelchair design, rather than to the total mass of the device.