Reproducibility of heart rate variability parameters measured in healthy subjects at rest and after a postural change maneuver

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Structured PICO

Population

30 healthy subjects, aged 20-49 years, 14 men

Intervention

Electrocardiographic (ECG) recordings for 10 min in the supine position and 10 min in the orthostatic position, repeated 2-3 hours later

Outcome

Intra-individual reproducibility of heart rate variability (HRV) parameters in time and frequency domainssurrogate

Short-term heart rate variability parameters are reproducible in healthy subjects, particularly when measured in the orthostatic position.

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Supports HRV protocol standardization in healthy subjects; leaves open validation in clinical populations and outcome studies.

Dantas et al. (2010) studied this question.

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