Human Performance Laboratory, Department of Sport and Exercise Sciences, Barry University, Miami Shores, Florida, USA.
J Strength Cond Res. 2012 Oct;26(10):2648-54. doi: 10.1519/JSC.0b013e31823f8de9.
The purpose of this study was to determine the incidence of meeting specific VO2max criteria and to test the effectiveness of a VO2max verification stage in college athletes. Thirty-five subjects completed a continuous graded exercise test (GXT) to volitional exhaustion. The frequency of achieving various respiratory exchange ratio (RER) and age-predicted maximum heart rate (HRmax) criteria and a VO2 plateau within 2 and 2.2 ml·kg(-1)·min(-1) (<2SD of the expected increase in VO2) were measured and tested against expected frequencies. After 10 minutes of active recovery, 10 subjects who did not demonstrate a plateau completed a verification stage performed at supramaximal intensity. From the GXT, the number of subjects meeting VO2max plateau was 5 (≤2 ml·kg(-1)·min(-1)) and 7 (≤2.2 ml·kg(-1)·min(-1)), RER criteria 34 (≥1.05), 32 (≥1.10), and 24 (≥1.15), HRmax criteria, 35 (<85%), 29 (<10 b·min(-1)) and 9 (HRmax). The VO2max and HRmax did not differ between GXT and the verification stage (53.6 ± 5.6 vs. 55.5 ± 5.6 ml·kg(-1)·min(-1) and 187 ± 7 vs. 187 ± 6 b·min(-1)); however, the RER was lower during the verification stage (1.15 ± 0.06 vs. 1.07 ± 0.07, p = 0.004). Six subjects achieved a similar VO2 (within 2.2 ml·kg(-1)·min(-1)), whereas 4 achieved a higher VO2 compared with the GXT. These data demonstrate that a continuous GXT limits the college athlete's ability to achieve VO2max plateau and certain RER and HR criteria. The use of a verification stage increases the frequency of VO2max achievement and may be an effective method to improve the accuracy of VO2max measurements in college athletes.
本研究旨在确定符合特定最大摄氧量 (VO2max) 标准的发生率，并测试 VO2max 验证阶段在大学生运动员中的有效性。35 名受试者完成了连续递增负荷运动测试（GXT）至力竭。测量并测试了达到各种呼吸交换比（RER）和年龄预测最大心率（HRmax）标准以及在 2 和 2.2 ml·kg(-1)·min(-1)（低于 VO2 预期增加的 2SD）内出现平台的频率，与预期频率进行了对比。在主动恢复 10 分钟后，10 名未出现平台的受试者完成了在超最大强度下进行的验证阶段。根据 GXT，达到 VO2max 平台的受试者数量为 5（≤2 ml·kg(-1)·min(-1)）和 7（≤2.2 ml·kg(-1)·min(-1)），RER 标准为 34（≥1.05）、32（≥1.10）和 24（≥1.15），HRmax 标准为 35（<85%）、29（<10 b·min(-1)）和 9（HRmax）。VO2max 和 HRmax 在 GXT 和验证阶段之间没有差异（53.6 ± 5.6 vs. 55.5 ± 5.6 ml·kg(-1)·min(-1)和 187 ± 7 vs. 187 ± 6 b·min(-1)）；然而，在验证阶段 RER 较低（1.15 ± 0.06 vs. 1.07 ± 0.07，p = 0.004）。6 名受试者达到了相似的 VO2（在 2.2 ml·kg(-1)·min(-1)内），而 4 名受试者达到的 VO2 高于 GXT。这些数据表明，连续 GXT 限制了大学生运动员达到 VO2max 平台和某些 RER 和 HR 标准的能力。使用验证阶段可提高达到 VO2max 的频率，并且可能是提高大学生运动员 VO2max 测量准确性的有效方法。
