Viola Holbrook Human Performance Laboratory, Minnesota State University, Mankato, Mankato, MN 56001, USA.
Med Sci Sports Exerc. 2011 Dec;43(12):2375-80. doi: 10.1249/MSS.0b013e318224cb0f.
The 3-min all-out exercise test (3 MT) is purported to estimate critical power (CP) and anaerobic work capacity (W') and serve as an exercise mode for measuring maximum oxygen uptake (VO(2max)). Reliability analysis of the 3 MT has been confined to CP, not W', and verification of "true" VO(2max)was exclusive to a graded exercise test (GXT).
We conducted a reliability analysis of the 3 MT and compared VO(2max)values from the 3 MT with a GXT and an exhaustive square-wave verification bout.
Upon completion of a custom GXT and square-wave verification protocol, 11 subjects of various aerobic powers completed two 3 MTs (separate visits). CP, W', average power during 150 s from the 3 MT, and VO(2max)values were assessed using typical error (TE), coefficient of variation (CV), and intraclass correlation (α).
CP (W) (trial 1 = 206 ± 47, trial 2 = 206 ± 42) did not differ between 3 MT trials (P = 0.37) and was reliable (TE = 15 W, CV = 7%, α = 0.93). W' was less reliable (TE = 2864 J, CV = 28%, α = 0.76) but did not alter power-duration estimates from the two 3 MTs (P > 0.05). Variability for VO(2max)(TE (mL·kg(-1)·min(-1)) between the GXT and the verification bout (1.16) was more consistent than the first (2.03) or second (2.69) 3 MT.
The 3 MT yields reliable estimates of CP and consistent estimates of the power-duration relationship. Power for 150 s, in comparison with W', is a more reliable metric of short-term power performance. The square-wave protocol is recommended over the 3 MT for verifying true VO(2max).
3 分钟全力运动测试（3MT）据称可以估计临界功率（CP）和无氧工作能力（W'），并作为测量最大摄氧量（VO2max）的运动方式。3MT 的可靠性分析仅限于 CP，而不是 W'，而“真实”VO2max 的验证则仅限于递增负荷运动试验（GXT）。
我们对 3MT 的可靠性进行了分析，并比较了 3MT 和 GXT 以及详尽的方波验证试验中 VO2max 的值。
在完成定制的 GXT 和方波验证方案后，11 名不同有氧能力的受试者分别在两次 3MT 测试中完成了两次 3MT 测试（分别在不同的时间）。CP、W'、3MT 后 150 秒的平均功率和 VO2max 值使用典型误差（TE）、变异系数（CV）和组内相关系数（α）进行评估。
3MT 试验之间 CP（W）（试验 1=206±47，试验 2=206±42）没有差异（P=0.37），并且具有可靠性（TE=15W，CV=7%，α=0.93）。W'的可靠性较低（TE=2864J，CV=28%，α=0.76），但不会改变两次 3MT 的功率-时间估计值（P>0.05）。GXT 和验证试验中 VO2max 的变异性（TE（mL·kg-1·min-1））比第一次（2.03）或第二次（2.69）3MT 更一致。
3MT 可提供 CP 的可靠估计值和一致的功率-时间关系估计值。与 W'相比，150 秒的功率是短期功率性能的更可靠指标。建议使用方波协议而不是 3MT 来验证真实的 VO2max。
