Sauret Christophe, Bascou Joseph, de Saint Rémy Nicolas, Pillet Hélène, Vaslin Philippe, Lavaste François
Laboratoire de Biomécanique, Arts et Métiers ParisTech, 151 boulevard de l'Hôpital, Paris, France.
J Rehabil Res Dev. 2012;49(1):63-74. doi: 10.1682/jrrd.2011.03.0050.
This article proposes a simple and convenient method for assessing the subject-specific rolling resistance acting on a manual wheelchair, which could be used during the provision of clinical service. This method, based on a simple mathematical equation, is sensitive to both the total mass and its fore-aft distribution, which changes with the subject, wheelchair properties, and adjustments. The rolling resistance properties of three types of front casters and four types of rear wheels were determined for two indoor surfaces commonly encountered by wheelchair users (a hard smooth surface and carpet) from measurements of a three-dimensional accelerometer during field deceleration tests performed with artificial load. The average results provided by these experiments were then used as input data to assess the rolling resistance from the mathematical equation with an acceptable accuracy on hard smooth and carpet surfaces (standard errors of the estimates were 4.4 and 3.9 N, respectively). Thus, this method can be confidently used by clinicians to help users make trade-offs between front and rear wheel types and sizes when choosing and adjusting their manual wheelchair.
本文提出了一种简单便捷的方法来评估作用于手动轮椅上的个体特异性滚动阻力，该方法可在临床服务过程中使用。此方法基于一个简单的数学方程，对总质量及其前后分布均敏感，而总质量及其前后分布会随使用者、轮椅特性和调整而变化。通过在人工负载下进行的现场减速测试中使用三维加速度计测量，确定了轮椅使用者常见的两种室内表面（硬光滑表面和地毯）上三种类型的前脚轮和四种类型的后轮的滚动阻力特性。然后，将这些实验提供的平均结果用作输入数据，以根据该数学方程在硬光滑表面和地毯表面上以可接受的精度评估滚动阻力（估计的标准误差分别为4.4 N和3.9 N）。因此，临床医生可以放心地使用此方法，以帮助使用者在选择和调整手动轮椅时在前轮和后轮的类型及尺寸之间进行权衡。
