Slow nocturnal body cooling during sleep increases interbeat intervals and is tightly coupled to high-frequency heart rate variability in healthy men.

Physiol Rep · 2025 · PMC12329345 · PMID 40771121

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did not reach statistical significanceno p-value reported

In all HRV measures, no statistically significant time course effects of mattress‐induced cooling (HM‐LM) were found; the MAT*TIME interaction did not reach statistical significance (Figures 1 and 2c–d ; Table S1 ).

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