Task difficulty influences heart rate variability: evidence from a pilot study using a multi-level mental arithmetic task.

Sci Rep · 2026 · PMC13103303 · PMID 41820547

Europe PMC DOI

hedged sentences

0.0500

closest p · 1.0× alpha

0.1000

boldest claim

The sentences

approached significancep =.05actually significant

Moreover, the correlation between NASA-TLX scores and DFA α1 approached significance (ρ = 0.32, p =.05).

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did not reach statistical significancep <.1so close (0.05 < p ≤ 0.1)

The comparison between the medium- and low-difficulty conditions approached but did not reach statistical significance ( p <.1), while no significant difference was observed between the high- and medium-difficulty conditions ( p >.05).

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