Randomized Trialmoderate evidence
Higher Workload, not Hypoxia, Enhances Acute Mitochondrial Respiratory Responses to High-Intensity Interval Exercise in Men with Overweight or Obesity.
Medicine and science in sports and exercise·September 28, 2026·PMID 42804691
Why it mattersFor clinicians guiding exercise prescription in overweight/obesity, this study clarifies that acute mitochondrial adaptations are driven more by exercise workload than by hypoxic stress. It suggests that prioritizing higher power output during interval training may be more effective for stimulating mitochondrial respiratory improvements than adding hypoxic conditions.
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