ABSTRACT

For people with disabilities or chronic diseases, an electrically supported tricycle (e-trike) could facilitate independence and participation in physical activity, and improve health conditions. This study investigates the exercise intensity and perceived exertion of e-trike cycling. Twenty healthy participants cycled on an e-trike with different speeds (12 and 18 km/h) and different levels of electric pedal support at an outdoor athletics track. Exercise intensity was measured with oxygen consumption ($\dot{V}{O}_2$) using a Cosmed K4B2 analysis unit, perceived exertion was measured with the Borg Rating of Perceived Exertion scale, pedaling power, and engine power were measured with a torque sensor. The effect of speed and support was analyzed with a Linear Mixed Effects model. $\dot{V}{O}_2$ was 18.67 ± 3.13 ml/kg/min without support, with electric support the exercise intensity was significantly below moderate intensity (i.e. 10.5 ml/kg/min) at t = 11.37, p < .001, 95% CI: 1.90, 2.77. The Borg score without support was 9.79 ± 1.72 and all other conditions below this, which were significantly below moderate intensity (i.e. 11) at t = −3.07, p = .007, 95% CI: −2.04, −0.38. Speed and support significantly affected $\dot{V}{O}_2$ (F = 185.49, p < .001). E-trike cycling is a low intensity activity, but intensity can be influenced by changing speed and support level.

摘要

对于残疾人或慢性病患者，电动三轮车（e-trike）可以促进独立和参与体育活动，并改善健康状况。本研究调查了电动三轮车骑行的运动强度和感知体力。20 名健康的参与者在户外田径跑道上以不同的速度（12 和 18 公里/小时）和不同程度的电动踏板支撑骑着电动三轮车。运动强度用耗氧量测量（$\dot{五}{○}_2$) 使用 Cosmed K4B2 分析单元，用 Borg Rating of Perceived Exertion 量表测量感知用力，用扭矩传感器测量踩踏功率和发动机功率。使用线性混合效应模型分析速度和支持的影响。$\dot{五}{○}_2$在没有支持的情况下为 18.67 ± 3.13 ml/kg/min，在 t = 11.37 时，运动强度显着低于中等强度（即 10.5 ml/kg/min），p < .001, 95% CI: 1.90, 2.77。没有支持的 Borg 评分为 9.79 ± 1.72 和低于此的所有其他条件，在 t = -3.07，p = .007，95% CI：-2.04，-0.38 时显着低于中等强度（即 11）。速度和支持受到严重影响$\dot{五}{○}_2$（F = 185.49，p < .001）。电动三轮车是一项低强度的活动，但强度会受到速度和支持水平的影响。