Green J Matt, Crews Thaddeus R, Bosak Andrew M, Peveler Willard W
Department of Physical Education and Recreation, Western Kentucky University, 1 Big Red Way, Bowling Green, KY 42101, USA.
Eur J Appl Physiol. 2003 Nov;90(5-6):608-13. doi: 10.1007/s00421-003-0892-5. Epub 2003 Aug 16.
This study compared respiratory compensation thresholds (RCT) ( VCO(2) inflection point) of competitors in highly aerobic events (aerobic competitors, ARC) ( n=16), competitors in highly anaerobic events (anaerobic competitors, ANC) ( n=15), and untrained subjects (UT) ( n=25). Maximal oxygen consumption ( VO(2max)), respiratory compensation threshold as a percentage of VO(2max) (RCT), and VO(2) at RCT ( Vdot;O(2RCT)) were determined during a maximal Bruce treadmill protocol. VO(2max) (ml x kg(-1) min(-1)) was significantly greater ( P<0.05) for ARC [67.2 (8.5)] than for ANC [50.0 (7.8)] and UT [43.8 (5.4)]. However, the difference between ANC and UT only approached significance ( P=0.07). RCT was not significantly different between ARC [76.3 (8.7)] and ANC [80.7 (6.8)] but was significantly lower ( P<0.05) for UT [62.5 (8.8)]. VO(2RCT) (ml x kg(-1) min(-1)) was significantly greater ( P<0.05) for ARC [51.6 (11.0)] and ANC [40.2 (6.6)] than for UT [27.4 (5.4)], with a significant difference also between ARC and ANC. While used as a criterion for group assignment, greater VO(2max), as well as RCT values in ARC (vs UT), reflect chronic aerobic training adaptations. ANC demonstrated VO(2max) values intermediate to ARC and UT, with RCT very comparable to those found in ARC. The results suggest subjects competitive in highly anaerobic events do not possess excessively high VO(2max) values. These individuals, however, demonstrate a high RCT when values are expressed relative to VO(2max). Oxygen consumption at the RCT in this group is superior to that in UT but inferior to that in ARC, which likely has important implications regarding performance.
本研究比较了高有氧项目运动员（有氧运动员，ARC）（n = 16）、高无氧项目运动员（无氧运动员，ANC）（n = 15）和未受过训练的受试者（UT）（n = 25）的呼吸补偿阈值（RCT）（VCO₂拐点）。在最大布鲁斯跑步机运动方案期间测定最大摄氧量（VO₂max）、呼吸补偿阈值占VO₂max的百分比（RCT）以及RCT时的VO₂（V̇O₂RCT）。ARC组的VO₂max（ml·kg⁻¹·min⁻¹）[67.2（8.5）]显著高于（P < 0.05）ANC组[50.0（7.8）]和UT组[43.8（5.4）]。然而，ANC组和UT组之间的差异仅接近显著水平（P = 0.07）。ARC组[76.3（8.7）]和ANC组[80.7（6.8）]之间的RCT无显著差异，但UT组[62.5（8.8）]的RCT显著更低（P < 0.05）。ARC组[51.6（11.0）]和ANC组[40.2（6.6）]的V̇O₂RCT（ml·kg⁻¹·min⁻¹）显著高于UT组[27.4（5.4）]，ARC组和ANC组之间也存在显著差异。虽然将较高的VO₂max以及ARC组（与UT组相比）的RCT值用作分组标准，但它们反映了长期有氧训练的适应性。ANC组的VO₂max值介于ARC组和UT组之间，其RCT与ARC组非常相似。结果表明，在高无氧项目中具有竞争力的受试者并不具有过高的VO₂max值。然而，当这些值相对于VO₂max表示时，该组受试者表现出较高的RCT。该组在RCT时的耗氧量优于UT组，但劣于ARC组，这可能对运动表现具有重要意义。
