The reliability of short-term measurements of heart rate variability

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

“…Since it is a noninvasive and inexpensive method, several recordings can be easily obtained as a function of time in the same individual to evaluate the efficacy of therapeutic interventions. Therefore, some studies have been specifically designed to evaluate the reproducibility of the measurements since autonomic balance is subjected to a large number of central and peripheral control systems, all of them potentially affecting HR control (17)(18)(19)(20)(21)(22)25). Some studies have shown good reproducibility in HRV analysis (17,20,21), while others have reported the opposite (22,27).…”

“…In general, our data showed high reproducibility both in the time and frequency domain analysis, mainly when the ECG recording was obtained in the orthostatic position. Reproducibility of HRV measures depends on several factors, including local conditions (temperature, noise), mental stress, spontaneous or paced breathing, and time interval between measurement (17,18,25). Therefore, recordings were obtained under rigorous conditions to reduce factors that might impair reproducibility.…”

“…Although several studies have found an adequate reproducibility of HRV both in the time and in the frequency domain analyses (13)(14)(15)(16)(17)(18)(19)(20)(21)(22), others have not made this observation (22,23). However, reproducibility of the different components of spectral HRV obtained from short-term records is still under discussion (24,25).…”

Heart rate variability is related to training load variables in interval running exercises

“…24 h) measurements, time-domain parameters are preferred to frequency-domain parameters, since the measurements no longer meet the demands of being stationary. The reliability of short-term HRV measurements have been reported in the review of Sandercock et al (2005b), who concluded that reliability of HRV measurements are heterogenous and depend on several factors. They found better reliability in the HRV measurements of a healthy population when com-pared to different clinical populations.…”

Orthopaedic Surgeons' Cardiovascular Response During Total Hip Arthroplasty

“…We did not use this parameter because of considerable controversies regarding heart rate variability in stress analysis. Although some authors suggest heart rate variability is the most objective and reliable noninvasive methodology available for accessing psychologic stress [20,28,29], others claim it is a gross oversimplification because results of reliability studies are heterogeneous and depend on many factors, which is why the analysis of heart rate variability as a direct window to autonomic tone is problematic [25,27] and contains as much prognostic information as a simple heart rate measurement [1,18,31].…”