Heart Rate and Respiratory Rate Influence on Heart Rate Variability Repeatability: Effects of the Correction for the Prevailing Heart Rate

Gąsior, Jakub S.; Sacha, Jerzy; Jeleń, Piotr; Zieliński, Jakub; Przybylski, Jacek

doi:10.3389/fphys.2016.00356

Cited by 76 publications

(65 citation statements)

References 50 publications

(124 reference statements)

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“…This non-invasive method is widely used in clinical and experimental researches (Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology, 1996; Lombardi and Stein, 2011), and normalized HRV parameters (HF%, LH%, LH/HF) were effective to evaluate muscle sympathetic nervous activity (Pagani et al, 1997). However, recent reviews argue that meaning of these HRV indices is more complex in that both LF and HF components may be modulated not only by sympathetic and parasympathetic neural activity but also by other non-autonomic nervous factors (Lombardi and Stein, 2011; Billman, 2013; Heathers, 2014; Gasior et al, 2016), which should be taken into account.…”

Section: Discussionmentioning

confidence: 99%

Compression at Myofascial Trigger Point on Chronic Neck Pain Provides Pain Relief through the Prefrontal Cortex and Autonomic Nervous System: A Pilot Study

et al. 2017

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Compression at myofascial trigger points (MTrPs), known as “ischemic compression,” has been reported to provide immediate relief of musculoskeletal pain and reduce the sympathetic activity that exacerbates chronic pain. We conducted a pilot study to investigate the possible involvement of the prefrontal cortex in pain relief obtained by MTrP compression in the present study, and analyzed the relationships among prefrontal hemodynamic activity, activity of the autonomic nervous system, and subjective pain in patients with chronic neck pain, with and without MTrP compression. Twenty-one female subjects with chronic neck pain were randomly assigned to two groups: MTrP compression (n = 11) or Non-MTrP compression (n = 10). Compression for 30 s was conducted 4 times. During the experiment, prefrontal hemodynamic activity [changes in Oxy-hemoglobin (Hb), Deoxy-Hb, and Total-Hb concentrations] and autonomic activity based on heart rate variability (HRV) were monitored by using near infrared spectroscopy (NIRS) and electrocardiography (ECG), respectively. The results indicated that MTrP compression significantly reduced subjective pain compared with Non-MTrP compression. The spectral frequency-domain analyses of HRV indicated that a low frequency (LF) component of HRV was decreased, and a high frequency (HF) component of HRV was increased during MTrP compression, while LF/HF ratio was decreased during MTrP compression. In addition, prefrontal hemodynamic activity was significantly decreased during MTrP compression compared with Non-MTrP compression. Furthermore, changes in autonomic activity were significantly correlated with changes in subjective pain and prefrontal hemodynamic activity. Along with previous studies indicating a role for sympathetic activity in the exacerbation of chronic pain, the present results suggest that MTrP compression in the neck region alters the activity of the autonomic nervous system via the prefrontal cortex to reduce subjective pain.

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Section: Discussionmentioning

confidence: 99%

Compression at Myofascial Trigger Point on Chronic Neck Pain Provides Pain Relief through the Prefrontal Cortex and Autonomic Nervous System: A Pilot Study

et al. 2017

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“…Prior to calculation of the spectral HRV parameters, the Kubios default smoothness priors detrending was employed (Lambda, λ value = 500) as previously described (Tarvainen et al, 2014; Gąsior et al, 2016). The IBIs were transformed to evenly sampled time series with 4-Hz interpolation resampling rate.…”

Section: Methodsmentioning

confidence: 99%

“…The detrended and interpolated IBIs were used for the frequency-domain HRV analysis. HRV spectra were calculated by using the fast Fourier transform (FFT) with Welch’s periodogram method (50% overlap window and 300 s window width) as previously described (Gąsior et al, 2016). We reported the low-frequency (LF) (0.04–0.15 Hz) and HF (high-frequency) power (0.15–0.40 Hz) and the LF/HF ratio as previously described (Task Force of the European Society of Cardiology and the North American Society of Pacing Electrophysiology, 1996).…”

Section: Methodsmentioning

confidence: 99%

High Altitude Affects Nocturnal Non-linear Heart Rate Variability: PATCH-HA Study

Boos

Bye²,

Sevier

et al. 2018

Front. Physiol.

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Background: High altitude (HA) exposure can lead to changes in resting heart rate variability (HRV), which may be linked to acute mountain sickness (AMS) development. Compared with traditional HRV measures, non-linear HRV appears to offer incremental and prognostic data, yet its utility and relationship to AMS have been barely examined at HA. This study sought to examine this relationship at terrestrial HA.Methods: Sixteen healthy British military servicemen were studied at baseline (800 m, first night) and over eight consecutive nights, at a sleeping altitude of up to 3600 m. A disposable cardiac patch monitor was used, to record the nocturnal cardiac inter-beat interval data, over 1 h (0200–0300 h), for offline HRV assessment. Non-linear HRV measures included Sample entropy (SampEn), the short (α1, 4–12 beats) and long-term (α2, 13–64 beats) detrend fluctuation analysis slope and the correlation dimension (D2). The maximal rating of perceived exertion (RPE), during daily exercise, was assessed using the Borg 6–20 RPE scale.Results: All subjects completed the HA exposure. The average age of included subjects was 31.4 ± 8.1 years. HA led to a significant fall in SpO2 and increase in heart rate, LLS and RPE. There were no significant changes in the ECG-derived respiratory rate or in any of the time domain measures of HRV during sleep. The only notable changes in frequency domain measures of HRV were an increase in LF and fall in HFnu power at the highest altitude. Conversely, SampEn, SD1/SD2 and D2 all fell, whereas α1 and α2 increased (p < 0.05). RPE inversely correlated with SD1/SD2 (r = -0.31; p = 0.002), SampEn (r = -0.22; p = 0.03), HFnu (r = -0.27; p = 0.007) and positively correlated with LF (r = 0.24; p = 0.02), LF/HF (r = 0.24; p = 0.02), α1 (r = 0.32; p = 0.002) and α2 (r = 0.21; p = 0.04). AMS occurred in 7/16 subjects (43.8%) and was very mild in 85.7% of cases. HRV failed to predict AMS.Conclusion: Non-linear HRV is more sensitive to the effects of HA than time and frequency domain indices. HA leads to a compensatory decrease in nocturnal HRV and complexity, which is influenced by the RPE measured at the end of the previous day. HRV failed to predict AMS development.

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“…Therefore, it was asserted that HRV parameters increase fundamentally with decreasing HRs and increasing IBIs due to mathematical and physiological reasons (M. Boyett et al, 2019;M. R. Boyett, 2017;Gąsior, Sacha, Jeleń, Zieliński, & Przybylski, 2016;Monfredi et al, 2014;Sacha, 2013). Boyett et al concluded that high HR levels with steep pacemaker potentials produce relatively (little variability between successive heart beats) small changes in the IBI, whereas low HR levels with flat pacemaker potentials produce relatively large changes in the IBI (M. Boyett et al, 2019).…”

Section: Relationship Between Ibi and Hrvmentioning

confidence: 99%

Heart rate regulation in patients with anorexia nervosa

Baumann¹,

Willaschek²,

Buchhorn³

2019

Preprint

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Objective: The purpose of this investigation was to examine heart rate variability (HRV), interbeat interval (IBI), and their interrelationship in healthy subjects, bradycardic HCN4 mutation carriers, and patients with anorexia nervosa (AN). We hypothesized that bradycardia in patients with AN is caused by neural mechanisms. Therefore, we assumed that a saturation effect of the HRV/IBI relationship in consequence of sustained parasympathetic control of the sinus node is exclusively detectable in patients with AN. Method: Patients with AN between the ages of 12 and 16 years admitted to our hospital due to malnutrition were grouped (N = 20). A matched-pair group with healthy children and adolescents was created. Groups were matched for age and gender. We performed 24-hour Holter electrocardiography (ECG) in controls and patients. Specifically, all patients underwent two 24-hour Holter ECGs (admission; refeeding treatment). Additionally, IBI's were recorded during night-time in HCN4 mutation carriers (N = 4). HRV parameters were analyzed in 5-minute sequences during night-time and plotted against mean corresponding IBI length. HRV, IBI, and their interrelationship were examined by calculating saturation indices, Spearman's rank correlation analyses, Mann-Whitney U-and Wilcoxon signed-rank tests. Results:The relationship between IBI and HRV showed signs of saturation in patients with AN. Signs of HRV saturation were also present in two HCN4 mutation carriers. In contrast, signs of HRV saturation were barely present in controls. Discussion:We believe that non-neural mechanisms such as HCN4 down-regulation are possible explanations for HRV saturation and the associated bradycardia in patients with AN.

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Heart Rate and Respiratory Rate Influence on Heart Rate Variability Repeatability: Effects of the Correction for the Prevailing Heart Rate

Cited by 76 publications

References 50 publications

Compression at Myofascial Trigger Point on Chronic Neck Pain Provides Pain Relief through the Prefrontal Cortex and Autonomic Nervous System: A Pilot Study

Compression at Myofascial Trigger Point on Chronic Neck Pain Provides Pain Relief through the Prefrontal Cortex and Autonomic Nervous System: A Pilot Study

High Altitude Affects Nocturnal Non-linear Heart Rate Variability: PATCH-HA Study

Heart rate regulation in patients with anorexia nervosa

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