Department of Sport and Exercise Science, The University of Auckland, Glen Innes, Auckland, New Zealand.
Assist Technol. 2013 Summer;25(2):111-6. doi: 10.1080/10400435.2012.726936.
The objective of this study was to investigate the effect of using spring-loaded crutches on mechanical efficiency in comparison to the use of standard crutches. Seven healthy male participants were recruited for this experiment. They were instructed to walk around a track on two types of crutches for five minutes under four controlled conditions. Ground reaction force and motion trajectories were recorded, which were used to calculate mechanical energy expenditure. Simultaneously, portable gas analysis machinery was used to collect the metabolic parameters of participants, in order to determine mechanical efficiency, the ratio of mechanical energy expenditure to metabolic energy expenditure. It was found that the mechanical efficiency was significantly higher when participants walked with spring-loaded crutches than when they walked with standard crutches. There were no significant differences in metabolic energy expenditure between the spring-loaded crutch conditions and standard crutch conditions.
本研究旨在探讨与使用标准拐杖相比，使用弹簧式拐杖对机械效率的影响。 该实验招募了 7 名健康男性参与者。 他们被指示在四种控制条件下使用两种类型的拐杖在轨道上行走五分钟。 记录地面反作用力和运动轨迹，用于计算机械能消耗。 同时，使用便携式气体分析仪器收集参与者的代谢参数，以确定机械效率，即机械能消耗与代谢能消耗的比值。 结果发现，参与者使用弹簧式拐杖行走时的机械效率明显高于使用标准拐杖行走时的机械效率。 在弹簧式拐杖条件和标准拐杖条件下，代谢能消耗没有显著差异。
