Anglia Ruskin University, Life Sciences, Unit for Sport and Exercise Sciences, Cambridge, United Kingdom.
Int J Sports Med. 2011 Jan;32(1):1-6. doi: 10.1055/s-0030-1267192. Epub 2010 Nov 11.
The purpose of this study was to address if there is an association between the plateau at V˙O (2max) and the anaerobic capacity. 9 well-trained cyclists (age 22.2 ± 3.5 yr, height 182.5 ± 5.0 cm, mass 75.7 ± 8.7 kg, V˙O (2max) 59.3 ± 4.8 ml x kg(-1) x min(-1)completed both an incremental step test of 20 W x min(-1) starting at 120 W for determination of maximal oxygen uptake (MOU) and a maximally accumulated oxygen deficit (MAOD) trial at 125% MOU for estimation of anaerobic capacity. Throughout all trials expired air was recorded on a breath-by-breath basis. A significant inverse relationship was observed between the MAOD and the Δ V˙O (2) during the final 60 s of the MOU test (r=-0.77, p=0.008). Of the 9 participants it was noted that only 4 exhibited a plateau at MOU. There were non-significant differences for V˙O (2) and the associated secondary criteria for those exhibiting a plateau and the non-plateau responders, despite a significant difference for MAOD (p=0.041) between groups. These data suggest that incidence of the plateau at MOU is dependent on anaerobic substrate metabolism and that ranges of responses reported in the literature may be a consequence of variations in anaerobic capacity amongst participants.
本研究旨在探讨最大摄氧量（V˙O (2max)）平台与无氧能力之间是否存在关联。9 名训练有素的自行车运动员（年龄 22.2 ± 3.5 岁，身高 182.5 ± 5.0 cm，体重 75.7 ± 8.7 kg，V˙O (2max) 59.3 ± 4.8 ml x kg(-1) x min(-1)）完成了递增 20 W x min(-1)的递增台阶测试，起始功率为 120 W，以确定最大摄氧量（MOU），并进行最大累积氧亏（MAOD）试验，以估计无氧能力，在 125% MOU 时进行试验。在所有试验中，通过逐口气记录呼出气体。在 MOU 测试的最后 60 s 期间，观察到 MAOD 与Δ V˙O (2)之间存在显著的负相关关系（r=-0.77，p=0.008）。在 9 名参与者中，只有 4 名在 MOU 时表现出平台。尽管 MAOD 之间存在显著差异（p=0.041），但表现出平台和非平台反应的参与者的 V˙O (2)和相关次要标准没有差异。这些数据表明，MOU 平台的出现与无氧底物代谢有关，文献中报道的反应范围可能是参与者之间无氧能力变化的结果。
