Donath Lars, Zahner Lukas, Cordes Mareike, Hanssen Henner, Schmidt-Trucksäss Aarno, Faude Oliver
Institute of Exercise and Health Sciences, University of Basel, Basel, Switzerland.
J Aging Phys Act. 2013 Jan;21(1):100-11. doi: 10.1123/japa.21.1.100. Epub 2012 Jul 24.
The study investigated physiological responses during 2-km walking at a certain intensity of a previously performed maximal exercise test where moderate perceived exertion was reported. Twenty seniors were examined by an incremental walking treadmill test to obtain maximal oxygen uptake (VO2max). A submaximal 2-km walking test was applied 1 wk later. The corresponding moderate perceived exertion (4 on the CR-10 scale) during the VO2max test was applied to the 2-km treadmill test. Moderate exertion (mean rating of perceived exertion [RPE]: 4 ± 1) led to 76% ± 8% of VO2max and 79% ± 6% of maximal heart rate. RPE values drifted with a significant time effect (p = .001, η(p) = .58) during the 2-km test from 3 ± 0.7 to 4.6 ± 0.8. Total energy expenditure (EE) was 3.3 ± 0.5 kcal/kg. No gender differences in ventilatory, heart-rate, or EE data occurred. Brisk walking at moderate RPE of 3-5 would lead to a beneficial physiological response during endurance training and a weekly EE of nearly 1,200 kcal when exercising 5 times/wk for 30 min.
该研究调查了在先前进行的最大运动测试中达到一定强度的2公里步行过程中的生理反应，该测试报告了中等自觉用力程度。通过递增式步行跑步机测试对20名老年人进行检查，以获得最大摄氧量（VO2max）。1周后进行次最大强度的2公里步行测试。将VO2max测试期间相应的中等自觉用力程度（CR-10量表上为4）应用于2公里跑步机测试。中等用力程度（平均自觉用力程度评分[RPE]：4±1）导致VO2max的76%±8%和最大心率的79%±6%。在2公里测试期间，RPE值随时间有显著变化（p = .001，η(p) = .58），从3±0.7升至4.6±0.8。总能量消耗（EE）为3.3±0.5千卡/千克。在通气、心率或EE数据方面未出现性别差异。在耐力训练期间，以3至5的中等RPE进行快走会产生有益的生理反应，并且当每周锻炼5次、每次30分钟时，每周的EE接近1200千卡。
