Sawyer Brandon J, McMahon Nicholas, Thornhill Kirsten L, Baughman Brett R, Mahoney Jenny M, Pattison Kai L, Freeberg Kaitlin A, Botts Ryan T
Departments of Kinesiology and Biology, Point Loma Nazarene University, San Diego, CA 92106, USA.
Department of Kinesiology, Point Loma Nazarene University, San Diego, CA 92106, USA.
Sports (Basel). 2020 Dec 12;8(12):163. doi: 10.3390/sports8120163.
This study was designed to determine the optimal intensity for verification phase testing (VP) in healthy, young adults. Thirty one young, active participants (16 females) completed a cycle ergometer graded exercise test (GXT) VO test and 4 VP tests at 80, 90, 100, and 105% of the maximum wattage achieved during the GXT. GXT and VP VO values showed a significant test x sex interaction ( = 0.02). The males elicited significantly higher VO values during the GXT, 80%, and 90% when compared to the 105%, (105 vs. GXT: = 0.05; 105% vs. 80%: < 0.01; 105% vs. 90%: = 0.02). There were no significant differences in VO across the tests in the females ( > 0.05); 80% of the males achieved their highest VP VO during a submaximal VP test compared to only 37.5% of the females. A secondary study conducted showed excellent reliability (ICCs > 0.90) and low variation (CVs < 3%) for the 90% VP. Our findings show that a submaximal verification phase intensity is ideal for young healthy males to elicit the highest VO during cycle ergometer testing. For females, a range of intensities (80-105%) produce similar VO values. However, the 80% VP yields an unnecessarily high time to exhaustion.
本研究旨在确定健康年轻成年人验证阶段测试（VP）的最佳强度。31名年轻、活跃的参与者（16名女性）完成了一次蹬车测力计分级运动测试（GXT）的VO测试以及在GXT期间达到的最大功率的80%、90%、100%和105%时的4次VP测试。GXT和VP的VO值显示出显著的测试×性别交互作用（=0.02）。与105%时相比，男性在GXT、80%和90%时的VO值显著更高（105%与GXT相比：=0.05；105%与80%相比：<0.01；105%与90%相比：=0.02）。女性在各测试中的VO值无显著差异（>0.05）；80%的男性在次最大强度的VP测试中达到了最高的VP VO，而女性只有37.5%。进行的一项次要研究表明，90%的VP具有出色的可靠性（组内相关系数>0.90）和低变异性（变异系数<3%）。我们的研究结果表明，对于年轻健康男性来说，次最大强度的验证阶段强度是在蹬车测力计测试中引出最高VO的理想选择。对于女性来说，一系列强度（80 - 105%）会产生相似的VO值。然而，80%的VP会产生不必要的高疲劳时间。
