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Title of Journal: Eur J Appl Physiol

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Abbravation: European Journal of Applied Physiology

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Springer-Verlag

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DOI

10.1007/bf00032168

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1439-6327

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A comparison of respiratory compensation threshold

Authors: J Matt Green Thaddeus R Crews Andrew M Bosak Willard W Peveler
Publish Date: 2003/08/16
Volume: 90, Issue: 5-6, Pages: 608-613
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Abstract

This study compared respiratory compensation thresholds RCT V̇CO2 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 V̇O2max respiratory compensation threshold as a percentage of V̇O2max RCT and V̇O2 at RCT V̇O2RCT were determined during a maximal Bruce treadmill protocol V̇O2max ml kg−1 min−1 was significantly greater P005 for ARC 672 85 than for ANC 500 78 and UT 438 54 However the difference between ANC and UT only approached significance P=007 RCT was not significantly different between ARC 763 87 and ANC 807 68 but was significantly lower P005 for UT 625 88 V̇O2RCT ml kg−1 min−1 was significantly greater P005 for ARC 516 110 and ANC 402 66 than for UT 274 54 with a significant difference also between ARC and ANC While used as a criterion for group assignment greater V̇O2max as well as RCT values in ARC vs UT reflect chronic aerobic training adaptations ANC demonstrated V̇O2max 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 V̇O2max values These individuals however demonstrate a high RCT when values are expressed relative to V̇O2max 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

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