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Copyright of Spektrum der Augenheilkunde is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Verändert die osteopathische herzfokussierte Palpation die Herzfrequenzvariabilität bei Personen mit muskuloskelettalen Schmerzen, die unter Stress stehen? Teil 1 des zweiteiligen Artikels beschreibt Ziele, Material und Methoden der randomisierten, kontrollierten Pilotstudie, in Teil 2 in der folgenden Ausgabe werden die Ergebnisse präsentiert. Die Herzfrequenzvariabilität (HRV) beschreibt Schwankungen in den Zeitintervallen zwischen den Herzschlägen und spiegelt die autonome Aktivität wider. Die HRV ist bei gestressten Patient*innen mit Muskel-Skelett-Schmerzen reduziert und verbessert sich nach einer osteopathischen manipulativen Behandlung und Mind-Body-Interventionen. Die herzfokussierte Palpation (HFP) kombiniert manuelle und Mind-Body-Ansätze um die Entspannung zu fördern. Diese randomisierte, kontrollierte Pilotstudie untersuchte die Durchführbarkeit und den Stichprobenumfang für eine künftige randomisierte, kontrollierte Studie sowie die Wirkung einer einmaligen Behandlung mit HFP oder Schein-HFP (SHAM) auf die kurzfristige HRV. Insgesamt 33 Teilnehmende schlossen die Studie ab. Does osteopathic heart-focused palpation change heart rate variability in people with musculoskeletal pain who are under stress? Part 1 of this two-part article describes the aims, material, methods and participants of the randomized, controlled pilot study; part 2 in the following issue will present the results. Heart rate variability (HRV) describes fluctuations in time intervals between heartbeats and reflects autonomic activity. HRV is reduced in stressed patients with musculoskeletal pain and improved after osteopathic manipulative treatment and mind–body interventions. Heart-focused palpation (HFP) combines manual and mind–body approaches to facilitate relaxation. This randomised controlled pilot study investigated the feasibility and sample size for a future randomised controlled trial and the effect of a single treatment with HFP or sham HFP (SHAM) on short-term HRV. A total of 33 adults with stress and musculoskeletal pain completed the trial. [ABSTRACT FROM AUTHOR]

Stephen Porges’s polyvagal theory proposes to integrate various scientific disciplines such as anatomy, physiology, psychophysiology, evolutionary and developmental biology, social sciences and psychotherapy together with special evolutionary features of the vagus nerve in mammals putatively claimed by polyvagal conjectures. This specifically involves linking neuroanatomical hypotheses about the vagus nerve with social and psychological concepts, especially regarding socioemotional behavior and conditions of extreme stress. These concepts have particularly found increasing popularity among trauma therapists, and have sometimes been described as groundbreaking, as in the last issue of this journal (Ackermann, 2024; Grassmann, 2024; Rahm & Meggyesy, 2024). However, there is a broad state-of-the-knowledge consensus among experts that the fundamental physiological hypotheses of the polyvagal theory are untenable and must be considered largely refuted. Furthermore, the major psychological constituents of polyvagal theory – attachment, co-regulation, social engagement, and intero ceptive processes beyond conscious awareness – each predate polyvagal speculations by decades; there is also a depth of thought and literature readily available that does not require physiological justifications for their uses in psychology or psychotherapy. For those desiring a more biological understanding of these processes, there are other models of explanation, integrating the entire nervous system, that correspond with current understanding of body and mind. [ABSTRACT FROM AUTHOR]

Copyright of German Journal of Sports Medicine / Deutsche Zeitschrift fur Sportmedizin is the property of Verein zur Forderung der Sportmedizin Hannover e.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Somnologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Zentralblatt fuer Arbeitsmedizin, Arbeitsschutz und Ergonomie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Zentralblatt fuer Arbeitsmedizin, Arbeitsschutz und Ergonomie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Der Internist is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Chronic stress and high workload in physicians can lead to loss of interest, emotional exhaustion and finally in burnout syndrome. This can cause serious consequences not only for the physicians personally and their own health by developing extensive health impairments, e.g. depression, suicide, substance abuse and poor self-care but also for patient care, reflected in an increase of medical errors, longer recovery times, lower care quality and consequently lower patient satisfaction. Additionally, it can also have negative effects on the healthcare system by reduced productivity, increased physician turnover and thereby higher costs. Objective: This pilot study investigated brief interventions inspired by mindfulness-based stress reduction (MBSR) combined with short daily meditation exercises in the everyday work of anesthetists at a university hospital. Secondly, whether this program increases the development of coping mechanisms for stress and improves participants' resilience and health status. Material and methods: The pilot study was designed as a monocenter prospective interventional study with four different points of measurement. Subjective and objective stress parameters were measured directly before (t0) and after (t1) the intervention as well as 3 (t2) and 6 (t3) months after end of the intervention. Measurements took place during work time and at the workplace. The intervention was based on the classical MBSR including short daily exercises and lasted for 6 weeks with sessions lasting 1– 1.5 h and an additional 20 min of daily mediation exercises. The subjective parameters were based on validated questionnaires, such as the World Health Organization (WHO) well-being index (WHO-5), resilience scale (RS-11), Maslach burnout inventory (MBI-22) and perceived stress scale (PSS-10). For objective parameters heart rate variability (HRV) was evaluated during rest and after exposure to physical exercise and hair cortisol concentrations (HCC) in a 1.5 cm length of a hair, which represents the equivalent of a 6-week period. Results: Data from 27 subjects could be analyzed. Between t3 and t0 a significant improvement of resilience was detected as a positive personality trait measured by RS-11 with a large effect size (p = 0.013; r = 0.59) as well as a significant reduction of burnout symptoms (MBI-22) also with a large effect size (p = 0.019; r = 0.57). Furthermore, a significant decrease was found in well-being (WHO-5) between t2 and t0 (p = 0.003, r = 0.67) and between t1 and t0 (p = 0.001, r = 0.71). The objective parameters did not show any significant differences between the examinations. Conclusion: An MBSR-based intervention in combination with short exercises during and after work can be implemented in daily work of anesthetists at a university hospital. Furthermore, there was clear evidence that the intervention program increased resilience and reduced burnout symptoms for up to 6 months. These findings are in line with the literature that MBSR reduces risk of burnout symptoms. The decrease in well-being might be biased by a high amount of socially accepted answers at the beginning of the study (t0). [ABSTRACT FROM AUTHOR]

Copyright of German Journal of Sports Medicine / Deutsche Zeitschrift fur Sportmedizin is the property of Verein zur Forderung der Sportmedizin Hannover e.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Der Diabetologe is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Herz is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The quantification of training loads by using heart rate variability (HRV) indices is a recognized method for individual training prescription. The present study investigates whether or not intensity zones determ ined by individual HRV change in relation to aerobic performance over a m id-term training period. Recreational runners were recruited for an endurance tra in ¬ ing over 12 weeks. A graded exercise test with spirom etry was performed at baseline and after the intervention. Additionally, possible changes of training prescriptions were investigated. Over the intervention period the lower and upper lim it of the ta rget heart rate in intensity zone I increased significantly. Subjects also significantly improved in performance parameters. Load quantification by HRV indices is progressive and pays attention to the individual fitness level. [ABSTRACT FROM AUTHOR]

Copyright of Zentralblatt fuer Arbeitsmedizin, Arbeitsschutz und Ergonomie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Herz is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The low- to high-frequency components ratio (LF/HF) of heart rate variability reflects the balance between sympathetic and parasympathetic activity. The autonomic response in individuals with obstructive sleep apnea (OSA) may lead to sympathetic activation demonstrated by an increase in the LF/HF ratio. Studies examining autonomic function during sleep and wake in children with OSA are relatively scarce. Aim: A meta-analysis of the relevant available publications. Methods: A MEDLINE search from 2000 through 2013 at PubMed (NLM) was performed. A search for the index terms ('sleep disordered breathing' OR 'obstructive sleep apnea') AND 'heart rate' in all fields was done. Studies that included comparisons between children with and without diagnosed OSA were included into the analysis. Types of 'outcome measures' were the values of the LF/HF indices in different states of the sleep-wake cycle. Results: Four studies met the inclusion criteria. A total of 518 control children and 272 children with different degrees of OSA whose mean age ranged between 4.2 and 9.8 years were reported in the studies. Large inconsistencies concerning the effect sizes across publications were found. Meta-regression revealed a statistically significant association between calculated values of the effect sizes and the reported mean values of the apnea-hypopnea indices in the OSA groups (intercept: − 0.11826, regression coefficient: 0.01667, p = 0.048). Conclusion: Power analysis of heart rate variability in children with OSA may help to provide further information regarding neural control mechanisms that are altered in OSA. The LF/HF index may serve as an indicator of OSA severity and as a possible marker for risk stratification in children with OSA. [ABSTRACT FROM AUTHOR]

Zusammenfassung: Die Diagnostik und Behandlung von Infektionen sind ein Schwerpunkt der heutigen Intensivmedizin und stellen die Therapeuten immer wieder vor große Herausforderungen. Infektionen stellen auch die wichtigste Komplikation nach akuten Schlaganfällen dar und beeinflussen wesentlich die Prognose der Patienten. Im Rahmen der Behandlung des Schlaganfalls ist die frühzeitige Erkennung sich entwickelnder Infektionen von besonderer Bedeutung. Ziel ist dabei eine möglichst frühzeitige antibiotische Therapie unter Vermeidung genereller prophylaktischer Gaben, vor allem im Hinblick auf Resistenzentwicklungen. Parameter aus Herzfrequenzrhythmen können hierbei durch ein fortlaufendes Monitoring klassische, nur zu bestimmten Zeitpunkten verfügbare Blutmarker potentiell ergänzen. Die Arbeit gibt einen Überblick über den pathophysiologischen Hintergrund der direkten Schädigungen durch einen Schlaganfall, der Schlaganfall-induzierten Immunsuppression und sich in der Folge entwickelnder Infektionen. Hierbei spielt das autonome Nervensystem eine wichtige Rolle. Die Aktivität des autonomen Nervensystems ist anhand von bestimmten Parametern der Herzfrequenzrhythmen errechenbar und somit potentiell aus den routinemäßig abgeleiteten EKGs verfügbar. [ABSTRACT FROM AUTHOR]

Copyright of Sportwissenschaft is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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The article analyzes the heart rate variability (HRV) with an instant change of the intervals between consecutive normal heart beats. It states that the autonomic nervous system controls the changes in heart rate where the variability is a sign of good adaptability and healthy individual. It also mentions the non-invasive measurements the occur in HRV analysis including the time domain, frequency domain and non-linear techniques.

Copyright of Herzschrittmachertherapie und Elektrophysiologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Neurophysiologie-Labor is the property of Elsevier GmbH, Urban & Fischer Verlag and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Medizinische Klinik (Urban & Vogel) is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Herzschrittmachertherapie und Elektrophysiologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Question of the study There are differing opinions regarding the accuracy required of sampling frequencies in ECG signals. The question of this study was whether sampling frequencies of 100 Hz or 40 Hz would significantly influence the results of spectral analysis of R-R intervals. Patients and methods Thirty subjects underwent polysomnographic recordings in the sleep laboratory, sampled at a frequency of 100 Hz using the Alice 3.0 system. Two different sampling frequencies were used to assess the effects on a subsequent spectral analysis of R-R intervals. Repetition using a different sampling frequency was performed with a simulation technique. The study was performed on the total group (N = 30) and on two different subgroups (mean R-R > 900 ms; n = 15 and mean R-R < 900 ms; n = 15), respectively. Results Although different means of R-R intervals influence the following spectral parameters in different ways, there are only small changes in the time domain. Differences > 5% in analyses using two different sampling frequencies was found only in the UHF band (very high frequency band > 0.40 Hz) in time series with short R-R intervals. In LF band and HF band, the differences varied between 1% and 3%. Conclusions Using the simulation technique, we found only small changes in the spectral analysis parameters. The selection of a correct mathematical approach seems to be an important precondition. Additional comparative studies using different sampling frequencies for the same data segment are necessary to confirm these results in real-time conditions. [ABSTRACT FROM AUTHOR]

Copyright of Der Diabetologe is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Question of the study We investigated the influence of radiofrequency electromagnetic fields emitted by digital mobile telephones on heart rate variability (HRV) during sleep in healthy young men. Subjects and methods For each subject, two polysomnographies were carried out in the sleep laboratory under field and sham exposure, respectively. Field intensity was weak so that thermal effects could be excluded. HRV was assessed from the electrocardiogram both in the time and in the frequency domain. Results For most HRV parameters, significant differences between sleep stages were found. Particularly, on the basis of spectral analysis of the RR intervals, slow wave sleep was characterized by a low LF/HF ratio of the low- and high-frequency components of HRV, indicating a predominance of the parasympathetic over the sympathetic activity in autonomic cardiac control. During REM sleep, the balance was shifted in favour of the sympathetic tone. For all HRV parameters, no significant differences were found between field and sham exposure. Conclusions Under the given experimental conditions, no influence of weak radiofrequency electromagnetic fields on cardiac autonomic activity could be proven. [ABSTRACT FROM AUTHOR]

Copyright of Herz is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Somnologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Herzschrittmachertherapie und Elektrophysiologie is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)