Key result
Acute mental stress significantly decreased phase synchronization between respiratory sinus arrhythmia and breathing, alongside decreases in RSA amplitude and HF power (P < 0.01).
Why the study?
Does acute mental stress alter the phase synchronization between respiratory sinus arrhythmia and respiration in healthy volunteers?
Observational (n=20)
Does acute mental stress alter the phase synchronization between respiratory sinus arrhythmia and respiration in healthy volunteers?
p-value: p=< 0.01
Acute mental stress decreases phase synchronization between respiratory sinus arrhythmia and breathing, providing a potential normalized index for mental stress.
No takes yet. Share an insight, caveat, or question.
May serve as a normalized stress index; leaves open validation in clinical populations and trials.
Niizeki et al. (2011) conducted an observational in Healthy volunteers (n=20). Acute mental stress (mental arithmetic task) vs. Resting control was evaluated on Changes in heart rate, systolic BP, breathing frequency, phase synchronization (λ), RSA amplitude, and HF power (p=< 0.01). Acute mental stress significantly decreased phase synchronization between respiratory sinus arrhythmia and breathing, alongside decreases in RSA amplitude and HF power (P < 0.01).
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