Chen A A, Kenny G P, Johnston C E, Giesbrecht G G
Laboratory for Exercise and Environmental Medicine, Faculty of Physical Education and Recreation Studies, University of Manitoba, Winnipeg.
Can J Appl Physiol. 1996 Apr;21(2):134-48. doi: 10.1139/h96-012.
An underwater cycle ergometer was designed consisting of an aluminum cycle frame in water connected with a 1:1 gear ratio to a mechanically braked standard cycle ergometer supported above the water. Three progressive maximal exercise tests were performed (n = 10): (a) the underwater ergometer in water (UEW), (b) underwater ergometer in air (UEA), and (c) a standard cycle ergometer in air (SEA). At submaximal power outputs, oxygen consumption (VO2) and heart rate (HR) were generally lower in the SEA condition (p < .05), indicating that exercise in the upright position was more efficient. Exercise in water (UEW) resulted in lower total exercise duration, maximal HR, and maximal Tes than in air conditions. The upright position (SEA) resulted in greater total exercise duration and maximal power output than the semirecumbent positions. Because of positional differences between the standard and underwater ergometers, air-water comparisons should be made by using the underwater ergometer in water and on land.
设计了一种水下自行车测力计，它由置于水中的铝制自行车车架组成，通过1:1的传动比与支撑在水面上方的机械制动标准自行车测力计相连。进行了三项递增式最大运动测试（n = 10）：（a）水中的水下测力计（UEW），（b）空气中的水下测力计（UEA），以及（c）空气中的标准自行车测力计（SEA）。在次最大输出功率时，SEA条件下的耗氧量（VO2）和心率（HR）通常较低（p < .05），表明直立位运动效率更高。与在空气中相比，水中运动（UEW）导致总运动持续时间、最大心率和最大运动时间缩短。直立位（SEA）比半卧位的总运动持续时间和最大输出功率更大。由于标准测力计和水下测力计的位置不同，空气与水的比较应通过在水中和陆地上使用水下测力计来进行。
