Glaister Mark, Stone Michael H, Stewart Andrew M, Hughes Michael G, Moir Gavin L
School of Human Sciences, St Mary's College, A College of the University of Surrey, Twickenham, UK.
J Strength Cond Res. 2007 May;21(2):606-12. doi: 10.1519/R-20676.1.
The aims of the present study were to examine the effects of endurance training on multiple sprint cycling performance and to evaluate the influence of recovery duration on the magnitude of those effects. Twenty-one physically active male university students were randomly assigned to either an experimental (n = 12) or a control (n = 9) group. The experimental group cycled for 20 minutes each day, 3 times per week, for 6 weeks at 70% of the power output required to elicit maximal oxygen uptake (VO2max). Multiple sprint performance was assessed using 2 maximal (20 x 5 seconds) sprint cycling tests with contrasting recovery periods (10 or 30 seconds). All tests were conducted on a friction-braked cycle ergometer. Relative to controls, training resulted in a 0.2 L.min(-1) increase in mean VO2max (95% likely range: -0.04 to 0.44 L.min(-1)). Changes in anaerobic capacity (determined by maximal accumulated oxygen deficit) over the same period were trivial (p = 0.96). After training, the experimental group showed significant improvements ( approximately 40 W), relative to controls, in multiple sprint measures of peak and mean power output. In contrast, training-induced reductions in fatigue were trivial (p = 0.63), and there were no significant between-protocol differences in the magnitude of any effects. In summary, 6 weeks of endurance training resulted in substantial improvements in multiple sprint cycling performance, the magnitude of the improvements being largely unaffected by the duration of the intervening recovery periods.
本研究的目的是检验耐力训练对多次冲刺骑行表现的影响，并评估恢复时长对这些影响程度的作用。21名身体活跃的男性大学生被随机分为实验组（n = 12）或对照组（n = 9）。实验组每天骑行20分钟，每周3次，持续6周，功率输出为引发最大摄氧量（VO2max）所需功率的70%。使用两次最大（20×5秒）冲刺骑行测试评估多次冲刺表现，恢复期不同（10或30秒）。所有测试均在摩擦制动的自行车测力计上进行。与对照组相比，训练使平均VO2max增加了0.2L·min⁻¹（95%可能范围：-0.04至0.44L·min⁻¹）。同期无氧能力（由最大累积氧亏缺确定）的变化微不足道（p = 0.96）。训练后，相对于对照组，实验组在多次冲刺的峰值和平均功率输出测量中显示出显著改善（约40W）。相比之下，训练引起的疲劳减轻微不足道（p = 0.63），且不同方案之间在任何影响程度上均无显著差异。总之，6周的耐力训练使多次冲刺骑行表现有显著改善，改善程度在很大程度上不受中间恢复期时长的影响。
