Linden A L, Holland G J, Loy S F, Vincent W J
Department of Kinesiology, California State University, Northridge 91330.
Med Sci Sports Exerc. 1993 Nov;25(11):1265-8.
The purpose of this study was to compare metabolic and cardiopulmonary responses for forward wheelchair ergometry (FOR) and reverse wheelchair ergometry (REV) at equal power outputs (PO) levels. Moderately active able-bodies (N = 21) subjects exercised at 3-min stages at PO levels of 15, 20, 25, and 30 W for each mode of ergometry. Oxygen uptake (VO2), pulmonary ventilation (VE), respiratory exchange ratio (RER), heart rate (HR), percent net mechanical efficiency (ME), revolutions per minute (RPM) and strikes per minute (SPM) were determined at each PO level. With the exception of RER, all the physiological responses (VO2, VE, and HR) were higher for FOR exercise (P < 0.05) than REV exercise. ME increased with PO and was higher (P < 0.05) for REV than FOR at each PO level. SPM values for the REV were lower (P < 0.01) by almost half of that for the FOR exercise, although RPM remained constant between modes during all four stages. In general, these data suggest that reverse wheelchair ergometry is physiologically more efficient than conventional wheelchair ergometry and should be studied further as an alternative method for wheelchair ambulation.
本研究的目的是比较在相同功率输出（PO）水平下，正向轮椅测力计运动（FOR）和反向轮椅测力计运动（REV）的代谢和心肺反应。中度活跃的健全受试者（N = 21）在每种测力计运动模式下，以3分钟为阶段，在15、20、25和30瓦的PO水平上进行运动。在每个PO水平下测定摄氧量（VO2）、肺通气量（VE）、呼吸交换率（RER）、心率（HR）、净机械效率百分比（ME）、每分钟转数（RPM）和每分钟击打次数（SPM）。除RER外，FOR运动的所有生理反应（VO2、VE和HR）均高于REV运动（P < 0.05）。ME随PO增加，且在每个PO水平下，REV的ME均高于FOR（P < 0.05）。REV的SPM值比FOR运动低近一半（P < 0.01），尽管在所有四个阶段中，RPM在不同模式之间保持恒定。总体而言，这些数据表明，反向轮椅测力计运动在生理上比传统轮椅测力计运动更有效，应作为轮椅行走的替代方法进一步研究。
