Scholarlink

Purpose <p>An oxygen uptake (V̇O<sub>2</sub>) plateau, despite an increased work rate, is considered the gold standard for confirming if exercise test performance reflects maximal oxygen uptake (V̇O<sub>2max</sub>). We investigated whether adolescents demonstrate a V̇O<sub>2</sub> plateau during an incremental test or if a supramaximal verification phase is necessary to confirm V̇O<sub>2max</sub>. We also investigated the impact of using moving versus binned time averages on V̇O<sub>2max</sub> values, and how these time averaging strategies influence the interpretation of the verification phase in confirming V̇O<sub>2max</sub>.</p> Methods <p>A total of 27 adolescents (16 girls) aged 12 to 14 years completed an incremental cycle ergometer ramp test to exhaustion. After a 15-minute recovery, a verification phase was conducted at 105% of their incremental test peak power. V̇O<sub>2max</sub> was analysed using 15-second binned and moving averages.</p> Results <p>Out of 27 participants, 5 (19%) demonstrated a plateau in V̇O<sub>2</sub> during an incremental test. V̇O<sub>2max</sub> was confirmed in the verification phase for 23 out of the 27 adolescents (85%). The moving V̇O<sub>2max</sub> (mL/kg/min) averages were higher than the binned V̇O<sub>2</sub> values in the incremental test (1.8%) and the verification phase (2.4%) (<i>P</i> &lt; 0.0001). Time averaging strategies did not affect the confirmation of V̇O<sub>2max</sub>.</p> Conclusion <p>A verification phase is necessary for accurately determining V̇O<sub>2max</sub> in adolescents, who often do not reach a V̇O<sub>2</sub> plateau. The time averaging strategies of exercise tests should be reported, as different strategies can lead to variations in V̇O<sub>2max</sub> results. However, these time averaging strategies do not impact the utility of the verification phase.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Measuring V̇O2max in adolescents: verification phase and impact of time averaging strategies

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月16日

查看全文
  • Petri Jalanko,
  • Emilia Laitinen,
  • Dimitris Vlachopoulos,
  • Ying Gao,
  • Timo Nurmi,
  • Alan R. Barker,
  • Bert Bond,
  • Earric Lee,
  • Eero A. Haapala

摘要

Purpose

An oxygen uptake (V̇O2) plateau, despite an increased work rate, is considered the gold standard for confirming if exercise test performance reflects maximal oxygen uptake (V̇O2max). We investigated whether adolescents demonstrate a V̇O2 plateau during an incremental test or if a supramaximal verification phase is necessary to confirm V̇O2max. We also investigated the impact of using moving versus binned time averages on V̇O2max values, and how these time averaging strategies influence the interpretation of the verification phase in confirming V̇O2max.

Methods

A total of 27 adolescents (16 girls) aged 12 to 14 years completed an incremental cycle ergometer ramp test to exhaustion. After a 15-minute recovery, a verification phase was conducted at 105% of their incremental test peak power. V̇O2max was analysed using 15-second binned and moving averages.

Results

Out of 27 participants, 5 (19%) demonstrated a plateau in V̇O2 during an incremental test. V̇O2max was confirmed in the verification phase for 23 out of the 27 adolescents (85%). The moving V̇O2max (mL/kg/min) averages were higher than the binned V̇O2 values in the incremental test (1.8%) and the verification phase (2.4%) (P < 0.0001). Time averaging strategies did not affect the confirmation of V̇O2max.

Conclusion

A verification phase is necessary for accurately determining V̇O2max in adolescents, who often do not reach a V̇O2 plateau. The time averaging strategies of exercise tests should be reported, as different strategies can lead to variations in V̇O2max results. However, these time averaging strategies do not impact the utility of the verification phase.