Cardiopulmonary exercise test results do not change over two sequential days in patients with chronic fatigue syndrome.

Front Physiol · 2026 · PMC13213420 · PMID 42212259

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did not reach statistical significanceno p-value reported

Workload at peak exercise declined in all groups on Day 2, with RER and maximum heart rate prone to being lower on Day 2, but did not reach statistical significance.

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