Ruggles D L, Cahalan T, An K N
Department of Physical Medicine and Rehabilitation, Mayo Clinic/Mayo Foundation, Rochester, MN 55905.
Arch Phys Med Rehabil. 1994 May;75(5):540-4.
The mechanical parameters of wheelchair propulsion were measured using 10 able-bodied participants. A roller system connected to a Cybex Isokinetic Machine was designed for measurement of the torque and angular displacement of the wheels during propulsion. The peak torque, angular displacement, work, and angular impulse were measured and calculated. Three types of wheelchairs, one from each of the following categories based on popularity, were evaluated: (1) lightweight, collapsible, nonadjustable Everest and Jennings Premier II (EJ); (2) lightweight, collapsible, adjustable Quickie II (Q2); and (3) lightweight, rigid-framed, adjustable Quickie GPV (Q1). Significant differences were found in certain mechanical parameters with propulsion of the three different types of wheelchairs. The work performed by each single stroke and the angular impulses are higher for the Q2 and Q1 than those of the EJ. These findings support the concept that wheelchair design and dimensions relative to the anthropometry of the user have great influence on the characteristics of wheelchair propulsion.
使用10名身体健全的参与者测量了轮椅推进的力学参数。设计了一种连接到Cybex等速肌力测试机的滚筒系统，用于测量推进过程中车轮的扭矩和角位移。测量并计算了峰值扭矩、角位移、功和角冲量。评估了三种类型的轮椅，根据受欢迎程度从以下类别中各选一种：(1) 轻便、可折叠、不可调节的Everest and Jennings Premier II（EJ）；(2) 轻便、可折叠、可调节的Quickie II（Q2）；(3) 轻便、刚性框架、可调节的Quickie GPV（Q1）。在推进三种不同类型的轮椅时，某些力学参数存在显著差异。Q2和Q1每次单冲程所做的功和角冲量高于EJ。这些发现支持了这样一种观念，即轮椅设计和尺寸相对于使用者的人体测量学对轮椅推进特性有很大影响。
