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Background <p>This study aimed to investigate the recovery effects and timing sequence of Mild Hyperbaric Oxygen Therapy (MHOT) on physiological responses and exercise capacity following muscle fatigue induced by simulated cycling exercise.</p> Methods <p>This study employed a controlled crossover design. Twelve Chinese secondary national-level male athletes participated in two identical trials (CON and MHOT). Each trial consisted of one daily session for six consecutive days. In each session, participants first completed 90&#xa0;min of cycling exercise to induce fatigue. Afterward, six participants underwent the CON intervention, while the other six received MHOT; the interventions were switched in the alternate trial. Physiological outcomes included the Pittsburgh Sleep Quality Index (PSQI), aerobic exercise exhaustion test (maximal oxygen uptake (V̇O₂max), maximal cycling power, maximal cycling time), Wingate anaerobic test, and brain and muscle tissue oxygenation indices. Measurements were taken at six time points across the study.</p> Results <p>After six interventions, the MHOT group showed significantly better subjective sleep quality compared with CON (<i>p</i> &lt; 0.05). MHOT also increased muscle and brain oxygenated hemoglobin as well as muscle total hemoglobin (<i>p</i> &lt; 0.05). At 24&#xa0;h after the sixth intervention, the MHOT group demonstrated higher V̇O₂max, maximal cycling power, and cycling time compared with CON (<i>p</i> &lt; 0.05). However, no significant differences were observed between MHOT and CON in Wingate test indices (<i>p</i> &gt; 0.05).</p> Conclusions <p>Repeated MHOT sessions promoted recovery by improving subjective sleep quality, enhancing brain and muscle oxygenation, and augmenting aerobic exercise performance compared with CON. However, MHOT did not significantly influence anaerobic capacity as assessed by the Wingate test.</p>

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Mild hyperbaric oxygen therapy on subjective sleep quality, aerobic, anaerobic exercise test, brain and muscle tissue oxygenation response in Chinese University male athletes after muscle fatigue

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月4日

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  • Chaoyi Qu,
  • Minxiao Xu,
  • Santiago Lorenzo,
  • Peng Huang,
  • Zhijian Rao,
  • Xue Geng,
  • Jiexiu Zhao

摘要

Background

This study aimed to investigate the recovery effects and timing sequence of Mild Hyperbaric Oxygen Therapy (MHOT) on physiological responses and exercise capacity following muscle fatigue induced by simulated cycling exercise.

Methods

This study employed a controlled crossover design. Twelve Chinese secondary national-level male athletes participated in two identical trials (CON and MHOT). Each trial consisted of one daily session for six consecutive days. In each session, participants first completed 90 min of cycling exercise to induce fatigue. Afterward, six participants underwent the CON intervention, while the other six received MHOT; the interventions were switched in the alternate trial. Physiological outcomes included the Pittsburgh Sleep Quality Index (PSQI), aerobic exercise exhaustion test (maximal oxygen uptake (V̇O₂max), maximal cycling power, maximal cycling time), Wingate anaerobic test, and brain and muscle tissue oxygenation indices. Measurements were taken at six time points across the study.

Results

After six interventions, the MHOT group showed significantly better subjective sleep quality compared with CON (p < 0.05). MHOT also increased muscle and brain oxygenated hemoglobin as well as muscle total hemoglobin (p < 0.05). At 24 h after the sixth intervention, the MHOT group demonstrated higher V̇O₂max, maximal cycling power, and cycling time compared with CON (p < 0.05). However, no significant differences were observed between MHOT and CON in Wingate test indices (p > 0.05).

Conclusions

Repeated MHOT sessions promoted recovery by improving subjective sleep quality, enhancing brain and muscle oxygenation, and augmenting aerobic exercise performance compared with CON. However, MHOT did not significantly influence anaerobic capacity as assessed by the Wingate test.