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Purpose <p>Verification stages are recommended for maximal oxygen consumption (V̇O<sub>₂max</sub>) determination, but there is currently no standardization of verification stage design. We sought to determine if the length of recovery and the initial intensity of subsequent exercise influence the effectiveness of verification stages during testing for V̇O<sub>₂max</sub>.</p> Methods <p>Twenty-seven participants (20 males, 7 females) completed four graded exercise tests (GXT). Each session included an identical incremental V̇O<sub>₂max</sub> (iV̇O<sub>₂max</sub>) protocol, followed by one of four verification stages with combinations of short (5&#xa0;min) and long (15&#xa0;min) rest periods, and submaximal (one stage below maximal workload) and supramaximal (one stage above maximal workload) starting intensities.</p> Results <p>Although iV̇O<sub>₂max</sub> and verification V̇O<sub>₂max</sub> (vV̇O<sub>₂max</sub>) were similar across all protocols, 11–19% of participants achieved higher values during verification. About 24% of individuals who did not exhibit a V̇O<sub>₂</sub> plateau during the GXT exhibited a vV̇O<sub>₂max</sub> &gt; iV̇O<sub>₂max</sub> in the submaximal verification protocols compared to 6–14% for the supramaximal protocols. Conclusions: Verification stages using initial submaximal intensities may increase the likelihood of achieving V̇O<sub>₂max</sub>.</p>

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Effects of verification stage intensity and duration on \(\dot{V}O_{{2\max }}\) determination

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月29日

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  • Andrew Foster,
  • Erin J. Dennis,
  • Stephanie P. Kurti,
  • Nicholas D. Luden,
  • Michael J. Saunders,
  • Christopher J. Womack

摘要

Purpose

Verification stages are recommended for maximal oxygen consumption (V̇O₂max) determination, but there is currently no standardization of verification stage design. We sought to determine if the length of recovery and the initial intensity of subsequent exercise influence the effectiveness of verification stages during testing for V̇O₂max.

Methods

Twenty-seven participants (20 males, 7 females) completed four graded exercise tests (GXT). Each session included an identical incremental V̇O₂max (iV̇O₂max) protocol, followed by one of four verification stages with combinations of short (5 min) and long (15 min) rest periods, and submaximal (one stage below maximal workload) and supramaximal (one stage above maximal workload) starting intensities.

Results

Although iV̇O₂max and verification V̇O₂max (vV̇O₂max) were similar across all protocols, 11–19% of participants achieved higher values during verification. About 24% of individuals who did not exhibit a V̇O₂ plateau during the GXT exhibited a vV̇O₂max > iV̇O₂max in the submaximal verification protocols compared to 6–14% for the supramaximal protocols. Conclusions: Verification stages using initial submaximal intensities may increase the likelihood of achieving V̇O₂max.