Human Performance Laboratory, Department of Health, Physical Education, Recreation and Leisure Studies, University of Nebraska at Kearney, Kearney, Nebraska, USA.
J Strength Cond Res. 2010 Jun;24(6):1643-9. doi: 10.1519/JSC.0b013e3181cb2854.
Treadmills (TM) and elliptical devices (EL) are popular forms of exercise equipment. The differences in the training stimulus presented by TM or EL are unknown. The purpose of this investigation was to evaluate oxygen consumption, energy expenditure, and heart rate on a TM or EL when persons exercise at the same perceived level of exertion. After measuring peak oxygen uptake (VO2peak) in 9 male and 9 female untrained college-aged participants, the subjects performed 2 separate 15-minute submaximal exercise tests on the TM and EL at a rating of perceived exertion (RPE) of 12-13. VO2peak was higher (p<0.05) in the males (48.6+/-1.5 vs. 45.2+/-1.6 ml/kg/min) than the females (41.7+/-1.8 vs. 38.8+/-2.2 ml/kg/min) for both TM and EL (means+/-standard error of the mean; for TM vs. EL respectively), but there were no differences in the measured VO2peak between TM or EL. During submaximal exercise there were no differences in RPE between TM and EL. Total oxygen consumption was higher (p<0.05) in males (30.8+/-2.2 vs. 34.9+/-2.2 L) than females (24.1+/-1.8 vs. 26.9+/-1.7 L) but did not differ between TM and EL. Energy expenditure was not different between TM (569+/-110 J) or EL (636+/-120 kJ). Heart rate was higher (p<0.05) on the EL (164+/-16 beats/min) compared to the TM (145+/-15 beats/min). When subjects exercise at the same RPE on TM or EL, oxygen consumption and energy expenditure are similar in spite of a higher heart rate on the EL. These data indicate that during cross training or noncompetition-specific exercise, an elliptical device is an acceptable alternative to a treadmill.
跑步机（TM）和椭圆机（EL）是流行的运动器材。TM 或 EL 所提供的训练刺激的差异尚不清楚。本研究的目的是评估当个体以相同的感知运动强度在 TM 或 EL 上运动时的耗氧量、能量消耗和心率。在测量 9 名未训练的大学生男性和女性的峰值摄氧量（VO2peak）后，受试者在跑步机和椭圆机上进行了 2 次 15 分钟的亚极量运动测试，运动强度为感知用力程度（RPE）12-13。男性的 VO2peak（p<0.05）高于女性（分别为 48.6+/-1.5 比 45.2+/-1.6 ml/kg/min；TM 和 EL 均如此）（41.7+/-1.8 比 38.8+/-2.2 ml/kg/min），但 TM 和 EL 之间的 VO2peak 没有差异。在亚极量运动期间，TM 和 EL 之间的 RPE 没有差异。男性的总耗氧量（p<0.05）高于女性（30.8+/-2.2 比 24.1+/-1.8 L），但 TM 和 EL 之间没有差异。能量消耗在 TM（569+/-110 J）或 EL（636+/-120 kJ）之间没有差异。心率在 EL（164+/-16 次/分）上高于 TM（145+/-15 次/分）（p<0.05）。当个体以相同的 RPE 在 TM 或 EL 上运动时，尽管 EL 上的心率较高，但耗氧量和能量消耗相似。这些数据表明，在交叉训练或非特定于比赛的运动中，椭圆机是跑步机的可接受替代品。
