Robergs R A, Bereket S, Knight M A
Center For Exercise and Applied Human Physiology, University of New Mexico, Albuquerque 87131, USA.
Percept Mot Skills. 1998 Jun;86(3 Pt 1):915-27. doi: 10.2466/pms.1998.86.3.915.
Two studies were conducted to assess whether indoor video-assisted cycling influenced a person's quality of exercise (subjectively and quantitatively), compared to indoor cycling alone. In the first study 12 recreationally active subjects completed an initial test of VO2max, and three randomized trials of cycling at 70% VO2max (35 min.) watching a commercial cycling tape (cycle video), a test pattern displayed on the ergometer screen (blank video), or no video. Subjects' ratings of perceived exertion (RPE) and Affect were recorded, and heart rate and oxygen consumption (VO2) were measured during testing. The second study required 12 different subjects first to complete an assessment of VO2max and then two randomized trials (cycle video and no video) on a cycle ergometer where they freely set the intensity of their own exercise. Measurements of VO2, heart rate, blood lactate, power output, RPE, and Affect were recorded during testing. Results of Exp. 1 indicated that subjects' perceived effort equally between the two conditions, yet reported significantly (p < .05) higher affect at 25 and 35 min. of cycling during the cycle video condition than no video condition. Results of Exp. 2 indicated that despite similar levels of blood lactate, subjects exercised at a significantly higher intensity during the cycle video condition compared to no video condition, with a higher VO2 and heart rate. The data support the use of indoor exercise videos to improve the exercise experience and also to increase the physiological demands of indoor exercise.
进行了两项研究，以评估与单独的室内骑行相比，室内视频辅助骑行是否会影响一个人的运动质量（主观和定量方面）。在第一项研究中，12名有休闲运动习惯的受试者完成了一次初始的最大摄氧量测试，以及三项在70%最大摄氧量下骑行35分钟的随机试验，分别是观看商业骑行录像带（骑行视频）、测力计屏幕上显示的测试图案（空白视频）或不观看视频。记录受试者的主观用力感觉（RPE）和情感状态，并在测试期间测量心率和耗氧量（VO2）。第二项研究要求12名不同的受试者首先完成一次最大摄氧量评估，然后在自行车测力计上进行两项随机试验（骑行视频和不观看视频），他们可以自由设定自己的运动强度。在测试期间记录VO2、心率、血乳酸、功率输出、RPE和情感状态的测量值。实验1的结果表明，受试者在两种情况下主观感觉到的努力程度相同，但在骑行视频条件下骑行25分钟和35分钟时，报告的情感状态显著更高（p < 0.05），高于不观看视频的条件。实验2的结果表明，尽管血乳酸水平相似，但与不观看视频的条件相比，受试者在骑行视频条件下运动强度显著更高，VO2和心率也更高。数据支持使用室内运动视频来改善运动体验，并增加室内运动的生理需求。
