Commentary: Photoplethysmography for Quantitative Assessment of Sympathetic Nerve Activity (SNA) During Cold Stress

Ackermann, Stefan; Laborde, Sylvain; Mosley, Emma

doi:10.3389/fphys.2021.602745

Cited by 5 publications

(8 citation statements)

References 40 publications

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“…While editing the papers submitted to this RT, we noticed many studies still rely on the low-frequency/high-frequency (LF/HF) ratio, and the so-called autonomic or sympathovagal balance. This interpretation was originally based on the premise that LF provided an index of sympathetic nervous activity, a claim that has now long been disproved in the literature, in particular using blockade studies (for a recent overview, see Ackermann et al, 2021).…”

Section: Methods: the Importance Of Following Hrv Methodological Guid...mentioning

confidence: 99%

Editorial: Horizon 2030: Innovative Applications of Heart Rate Variability

et al. 2022

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Section: Methods: the Importance Of Following Hrv Methodological Guid...mentioning

confidence: 99%

Editorial: Horizon 2030: Innovative Applications of Heart Rate Variability

et al. 2022

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“…In previous research [40], the authors attributed the LF component to SNS origin and considered the LF/HF ratio as a "sympathovagal balance" indicator. Extensive research has repeatedly shown that LF is a mix of sympathetic, parasympathetic, and baroreflex activity and that LF is not a reliable indicator of (cardiac) SNS activity [10,106,107]. Conversely, the gold standard to measure (cardiac) SNS activity is the pre-ejection period [108].…”

Section: Hrv Profile Age and Body Fat Percentagementioning

confidence: 99%

Heart Rate Variability in Professional and Semiprofessional Soccer: A Scoping Review

Mirto,

Filipas,

Altini

et al. 2024

Scandinavian Med Sci Sports

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In modern soccer, fitness and fatigue monitoring tools tend to be focused on noninvasive, time‐efficient and player‐friendly measures. Heart rate variability (HRV) has been suggested as an effective method for monitoring training response and readiness to perform. However, there is still a lack of consensus on HRV monitoring when it comes to soccer. Thus, this scoping review aims to map existing evidence on HRV in professional and semiprofessional soccer settings, and to identify knowledge gaps to inform future research directions. A search of databases (PubMed, Scopus, Web of Science, Google Scholar) according to the PRISMA‐ScR statement was employed. Studies were screened for eligibility on inclusion criteria: (1) HRV was among the topics discussed in the article; (2) adult professional or semiprofessional soccer players were involved in the study; (3) both male and female participants; (4) no geographical area exclusion; (5) articles published in English; and (6) article full text available. The search of the selected databases revealed 8456 records. The titles and abstracts of all articles were retrieved for screening of eligibility, leaving 30 articles for further consideration. Following screening against set criteria, a total of 25 studies were included in this review, the sample size of which ranged from 6 to 124 participants. The participants in the included studies were professional and semiprofessional soccer players, interviewed clubs staff, and practitioners. Along with other monitoring strategies, morning vagally mediated HRV analysis via (ultra)short‐term orthostatic measurements may be an efficient way to assess training adaptations and readiness to perform in professional and semiprofessional soccer players. Further research is required to make definitive recommendations.

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“…The ratio of LF to HF is called the LF/HF ratio, and its meaning is controversial, especially regarding the term ′sympatho-vagal balance′. Claims regarding the LF/HF ratio reflecting the ′sympatho-vagal balance′ are generally rejected by researchers [ 21 , 22 , 23 ]. In contrast to initial thinking, it has been shown that LF-HRV is not a reliable indicator of sympathetic nervous activity [ 21 , 24 , 25 ].…”

Section: Heart Rate Variability—the Heart’s Eye To the Vagusmentioning

confidence: 99%

“…Claims regarding the LF/HF ratio reflecting the ′sympatho-vagal balance′ are generally rejected by researchers [ 21 , 22 , 23 ]. In contrast to initial thinking, it has been shown that LF-HRV is not a reliable indicator of sympathetic nervous activity [ 21 , 24 , 25 ]. Consequently, the sympatho-vagal balance as measured by the LF/HF ratio is an inaccurate conceptualization [ 22 , 23 ].…”

Section: Heart Rate Variability—the Heart’s Eye To the Vagusmentioning

confidence: 99%

Neuromodulation Applied to Diseases: The Case of HRV Biofeedback

Gitler

Vanacker²,

Couck³

et al. 2022

JCM

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The vagus or “wandering” nerve is the main branch of the parasympathetic nervous system (PNS), innervating most internal organs crucial for health. Activity of the vagus nerve can be non-invasively indexed by heart-rate variability parameters (HRV). Specific HRV parameters predict less all-cause mortality, lower risk of and better prognosis after myocardial infarctions, and better survival in cancer. A non-invasive manner for self-activating the vagus is achieved by performing a slow-paced breathing technique while receiving visual feedback of one’s HRV, called HRV-biofeedback (HRV-B). This article narratively reviews the biological mechanisms underlying the role of vagal activity and vagally mediated HRV in hypertension, diabetes, coronary heart disease (CHD), cancer, pain, and dementia. After searching the literature for HRV-B intervention studies in each condition, we report the effects of HRV-B on clinical outcomes in these health conditions, while evaluating the methodological quality of these studies. Generally, the levels of evidence for the benefits of HRV-B is high in CHD, pain, and hypertension, moderate in cancer, and poor in diabetes and dementia. Limitations and future research directions are discussed.

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Commentary: Photoplethysmography for Quantitative Assessment of Sympathetic Nerve Activity (SNA) During Cold Stress

Cited by 5 publications

References 40 publications

Editorial: Horizon 2030: Innovative Applications of Heart Rate Variability

Editorial: Horizon 2030: Innovative Applications of Heart Rate Variability

Heart Rate Variability in Professional and Semiprofessional Soccer: A Scoping Review

Neuromodulation Applied to Diseases: The Case of HRV Biofeedback

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