Moyna N M, Robertson R J, Meckes C L, Peoples J A, Millich N B, Thompson P D
Center for Sport Science and Health, Dublin City University, Dublin, Ireland.
Med Sci Sports Exerc. 2001 Aug;33(8):1404-10. doi: 10.1097/00005768-200108000-00025.
This study compared the rate of energy expenditure among six popular exercise machines at intensities corresponding to ratings of perceived exertion (RPE) for fairly light (RPE-11), somewhat hard (RPE-13), and hard (RPE-15) in 9 healthy men and 10 healthy women.
A maximal exercise test on each exercise machine was used to anchor the Borg 15-point category scale. Subjects performed three submaximal exercise tests at selected RPEs on a treadmill, stair-stepper, cycle ergometer, rowing ergometer, cross-country ski simulator, and rider. The submaximal tests on each exercise device were performed in random order and were 6 min in duration with 15-min rest between trials. Oxygen uptake, heart rate, and blood lactate concentration were measured during the final 2 min of each exercise intensity.
Energy expenditure at each RPE was highest on the treadmill and ski simulator in men, and on the treadmill, ski simulator, and rowing ergometer in women. Energy expenditure in men and women at all RPEs was lowest on the rider and cycle ergometer. Energy expenditure at a given RPE was greater in men than women on all exercise machines, but men and women used a similar percentage of their machine specific peak oxygen uptake at each RPE on all machines. Heart rate was generally similar among the machines and between both men and women at each RPE.
Our results indicated that there are large differences in energy expenditure between exercise machines and between men and women at intensities perceived to be fairly light, somewhat hard, and hard. Consequently, subjects can expend more calories at the same RPE during treadmill and ski simulator exercise, for example, than during exercise with other devices. This may have important implications for the health benefits of different exercises and in promoting long term exercise adherence.
本研究比较了9名健康男性和10名健康女性在对应于相当轻松（自感用力度为11）、有点费力（自感用力度为13）和费力（自感用力度为15）的自感用力度强度下，六种流行健身器材的能量消耗率。
在每种健身器材上进行最大运动测试，以校准Borg 15级分类量表。受试者在跑步机、楼梯机、自行车测力计、划船测力计、越野滑雪模拟器和健身车上，以选定的自感用力度进行三次次最大运动测试。每种健身器材的次最大测试以随机顺序进行，持续6分钟，两次测试之间休息15分钟。在每种运动强度的最后2分钟测量摄氧量、心率和血乳酸浓度。
在男性中，每种自感用力度下跑步机和滑雪模拟器上的能量消耗最高；在女性中，跑步机、滑雪模拟器和划船测力计上的能量消耗最高。在所有自感用力度下，男性和女性在健身车和自行车测力计上的能量消耗最低。在所有健身器材上，给定自感用力度下男性的能量消耗高于女性，但在每种自感用力度下，男性和女性在所有器材上使用的特定器材峰值摄氧量百分比相似。在每种自感用力度下，各器材之间以及男性和女性之间的心率总体相似。
我们的结果表明，在被认为相当轻松、有点费力和费力的强度下，健身器材之间以及男性和女性之间的能量消耗存在很大差异。因此，例如，在跑步机和滑雪模拟器运动中，受试者在相同自感用力度下比使用其他器材运动时能消耗更多卡路里。这可能对不同运动的健康益处以及促进长期运动坚持具有重要意义。
