Loy S F, Conley L M, Sacco E R, Vincent W J, Holland G J, Sletten E G, Trueblood P R
Department of Kinesiology, California State University, Northridge 91330.
Med Sci Sports Exerc. 1994 Feb;26(2):241-7. doi: 10.1249/00005768-199402000-00016.
The purpose of this study was to determine the effect of 12 wk of stairclimbing with and without an external load on aerobic capacity and quadriceps strength of sedentary (initial VO2max 25.3 +/- 0.73 ml.kg-1.min-1) (mean +/- SEM) middle aged females (50-65 yr). Three groups, LOAD (stairclimbing with external load, N = 8), STAIR (no load, N = 9), and CONTROL (N = 7) were tested. By week 4, subjects warmed up 5 min on a cycle ergometer followed by 35 min on the stairclimber at 80-85% maximum heart rate (MHR) 4 d.wk-1. In week 6, the LOAD group carried an external load of 4% of body weight increasing to 8% for weeks 7-12. STAIR and LOAD group significantly increased (P < 0.01) VO2max by 11.1% and 9.6%, respectively. Isokinetic strength tests showed increased (P < 0.05) peak torque and total work for STAIR and LOAD at 120 and 180 degrees.s-1. For total work, a significant increase (P < 0.05) of 10.5% was observed at 60 degrees.s-1 for the LOAD group. The results indicate stairclimbing is an appropriate exercise for middle-aged females improving both aerobic capacity and strength following 12 wk of training.
本研究的目的是确定12周有或无外部负荷的爬楼梯运动对久坐不动（初始最大摄氧量25.3±0.73 ml·kg⁻¹·min⁻¹）（平均值±标准误）的中年女性（50 - 65岁）有氧能力和股四头肌力量的影响。测试了三组，即负荷组（负重爬楼梯，N = 8）、楼梯组（无负荷，N = 9）和对照组（N = 7）。到第4周时，受试者先在功率自行车上热身5分钟，然后以最大心率（MHR）的80 - 85%在爬楼梯机上运动35分钟，每周进行4天。在第6周，负荷组携带相当于体重4%的外部负荷，第7 - 12周增加到8%。楼梯组和负荷组的最大摄氧量分别显著增加（P < 0.01）了11.1%和9.6%。等速力量测试表明，楼梯组和负荷组在120和180度·秒⁻¹时的峰值扭矩和总功增加（P < 0.05）。对于总功，负荷组在60度·秒⁻¹时显著增加（P < 0.05）了10.5%。结果表明，爬楼梯是中年女性进行12周训练后改善有氧能力和力量的合适运动。
