Photoplethysmography (PPG)-determined heart rate variability (HRV) and extracellular water (ECW) in the evaluation of chronic stress and inflammation

HORMONES ◽  
2022 ◽  
Author(s):  
George P. Chrousos ◽  
Nektaria Papadopoulou-Marketou ◽  
Flora Bacopoulou ◽  
Mariantonietta Lucafò ◽  
Andrea Gallotta ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Chronic Stress ◽  
Extracellular Water

Anxiety and Heart Rate Variability before Sleep Indicate Chronic Stress in Students

2011 ◽  
Vol 112 (1) ◽  
pp. 138-150 ◽  
Author(s):  
Maki Furutani ◽  
Hideki Tanaka ◽  
Ichiro Agari
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Chronic Stress

scholarly journals Heart Rate Variability as an Indicator of Chronic Stress Caused by Lameness in Dairy Cows

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0134792 ◽  
Author(s):  
Levente Kovács ◽  
Fruzsina Luca Kézér ◽  
Viktor Jurkovich ◽  
Margit Kulcsár-Huszenicza ◽  
János Tőzsér
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dairy Cows ◽  
Chronic Stress

scholarly journals Heart Rate Variability and Accelerometry as Classification Tools for Monitoring Perceived Stress Levels—A Pilot Study on Firefighters

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2834 ◽  
Author(s):  
Michał Meina ◽  
Ewa Ratajczak ◽  
Maria Sadowska ◽  
Krzysztof Rykaczewski ◽  
Joanna Dreszer ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Risk ◽  
Chronic Stress ◽  
Perceived Stress ◽  
Stress Level ◽  
Physiological Data ◽  
Invasive Technique ◽  
Stress Monitoring ◽  
As Stress

Chronic stress is the main cause of health problems in high-risk jobs. Wearable sensors can become an ecologically valid method of stress level assessment in real-life applications. We sought to determine a non-invasive technique for objective stress monitoring. Data were collected from firefighters during 24-h shifts using sensor belts equipped with a dry-lead electrocardiograph (ECG) and a three-axial accelerometer. Levels of stress experienced during fire incidents were evaluated via a brief self-assessment questionnaire. Types of physical activity were distinguished basing on accelerometer readings, and heart rate variability (HRV) time series were segmented accordingly into corresponding fragments. Those segments were classified as stress/no-stress conditions. Receiver Operating Characteristic (ROC) analysis showed true positive classification as stress condition for 15% of incidents (while maintaining almost zero False Positive Rate), which parallels the amount of truly stressful incidents reported in the questionnaires. These results show a firm correspondence between the perceived stress level and physiological data. Psychophysiological measurements are reliable indicators of stress even in ecological settings and appear promising for chronic stress monitoring in high-risk jobs, such as firefighting.

Relationship between Malocclusion and Heart Rate Variability Indices in Young Adults

2011 ◽  
Vol 50 (04) ◽  
pp. 358-363 ◽  
Author(s):  
N. Takeuchi ◽  
M. Furuta ◽  
T. Tomofuji ◽  
M. Morita ◽  
D. Ekuni
Keyword(s):  
Quality Of Life ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Young Adults ◽  
Chronic Stress ◽  
High Frequency ◽  
Low Frequency ◽  
The Relationship ◽  
Oral Impacts

Summary Objectives: Heart rate variability (HRV) has been used to assess sympathetic and parasympathetic modulation of heart rate. Chronic stress relates to reduced HRV. Malocclusion has effects on quality of life, which can lead to chronic stress. Therefore, we hypothesized that malocclusion, as chronic stress, may contribute to reduced HRV. The aim of this study was to investigate the relationship between malocclusion and HRV indices in healthy young adults. Methods: Thirty-seven non-smoking healthy subjects, aged 22 to 25 years, were examined. Malocclusion was defined by Angle classification. HRV indices included root mean square of successive differences, low frequency (LF), high frequency (HF) and ratio of LF to HF. The effects of malocclusion on quality of life and mental health were assessed using self-reported questionnaires, the condition-specific Oral Impacts on Daily Performances index (CS-OIDP) and the Hopkins Symptoms Checklist (HSCL), respectively. Results: Significantly lower score of HF and higher heart rate (HR) level and CS-OIDP score were observed in subjects with malocclusion (n = 17) compared to those in the control subjects (n = 20) (P < 0.05). There was a positive correlation between HR and score of “anxiety” in HSCL (P < 0.05). Conclusions: The data showed an association between malocclusion and lower HRV. Based on our results, orthodontic treatment might contribute not only to improvement of oral esthetic and functional problems but also to improvement of stress and HRV indices.

scholarly journals Effect of Stress on Autonomic and Cardiovascular Systems in Military Population: A Systematic Review

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Álvaro Bustamante-Sánchez ◽  
José Francisco Tornero-Aguilera ◽  
Valentín E. Fernández-Elías ◽  
Alberto J. Hormeño-Holgado ◽  
Athanasios A. Dalamitros ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Chronic Stress ◽  
Multiple Stressors ◽  
Psychological Status ◽  
Autonomous Nervous System ◽  
Military Operations ◽  
Military Population ◽  
Acute And Chronic Stress ◽  
Cardiovascular Systems

Stress is regulated by the autonomous nervous system, increasing the sympathetic modulation when a threat is perceived. A multifactorial response usually leads to significant behavioural modifications and alterations on homeostasis and physical and psychological status. Moreover, stress is an emotional response that can lead to psychosocial and psychophysiological adversity. Regarding military population, military operations and combat exposure are important stressors that influence acute and chronic stress response in soldiers, affecting their performance and health. A bibliographic search was carried out between April and May 2019, focusing on recent studies (2013–2019) that analysed psychophysiological response, stress, stress regulation, heart rate, heart rate variability, and posttraumatic stress disorder in military population. Autonomic and cardiovascular chronic stress seems to be modulated by experience and previous specific training of each military unit. Physical exercise, music embedded with binaural beat technology, bidirectional sensory motor rhythm training, heart rate variability biofeedback, and transcutaneous vagal nerve stimulation are the main techniques applied to balance stress and to recover body homeostasis. Since military population are usually exposed to multiple stressors, knowing previous training and experience, together with developing techniques to balance stress, is the main practical application in this field of study to balance autonomic and cardiovascular systems.

Assessment of chronic stress in sheep (part II): Exploring heart rate variability as a non-invasive measure to evaluate cardiac regulation

2015 ◽  
Vol 133 ◽  
pp. 30-35 ◽  
Author(s):  
Solveig M. Stubsjøen ◽  
Maren Knappe-Poindecker ◽  
Jan Langbein ◽  
Terje Fjeldaas ◽  
Jon Bohlin
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Chronic Stress ◽  
Non Invasive ◽  
Cardiac Regulation

scholarly journals Heart Rate Variability, Sleep Quality, and Depression in the Context of Chronic Stress

2020 ◽  
Author(s):  
Chelsea da Estrela ◽  
Jennifer McGrath ◽  
Linda Booij ◽  
Jean-Philippe Gouin
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Depressive Symptoms ◽  
Sleep Quality ◽  
Chronic Stress ◽  
Sleep Disturbances ◽  
Developmental Disorders ◽  
Depression Symptoms ◽  
Poor Sleep ◽  
Potential Biomarker

Abstract Background Disrupted sleep quality is one of the proposed mechanisms through which chronic stress may lead to depression. However, there exist significant individual differences in sleep reactivity, which is the extent to which one experiences sleep disturbances in response to stress. Purpose The aim of the current study was to investigate whether low high-frequency heart rate variability (HRV), as a psychophysiological marker of poor emotional and physiological arousal regulation, predicts stress-related sleep disturbances associated with greater risk of depression symptoms. Methods Using a chronic caregiving stress model, 125 mothers of adolescents with developmental disorders and 97 mothers of typically developing adolescents had their resting HRV and HRV reactivity recorded and completed a measure of depressive symptoms, as well as a 7 day sleep diary to assess their sleep quality. A moderated mediation model tested whether sleep quality mediated the association between chronic stress exposure and depressive symptoms and whether HRV moderated this mediation. Results After controlling for participant age, body mass index, ethnicity, socioeconomic status, and employment status, poor sleep quality mediated the association between chronic stress and depressive symptoms. Resting HRV moderated this indirect effect such that individuals with lower HRV were more likely to report poorer sleep quality in the context of chronic stressor exposure, which, in turn, was related to greater depressive symptoms. Conclusions Lower HRV, a potential biomarker of increased sleep reactivity to stress, is associated with greater vulnerability to stress-related sleep disturbances, which, in turn, increases the risk for elevated depressive symptoms in response to chronic stress.

scholarly journals The Psychological and Physiological Effects of Acute Occupational Stress in New Anesthesiology Residents

2014 ◽  
Vol 121 (4) ◽  
pp. 878-893 ◽  
Author(s):  
John H. Eisenach ◽  
Juraj Sprung ◽  
Matthew M. Clark ◽  
Tait D. Shanafelt ◽  
Bruce D. Johnson ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Occupational Stress ◽  
Chronic Stress ◽  
Physiological Stress ◽  
A Priori ◽  
Pilot Trial ◽  
Time Points ◽  
Future Design ◽  
The Impact

Abstract Background: Occupational stress in resident physicians has profound implications for wellness, professionalism, and patient care. This observational pilot trial measured psychological and physiological stress biomarkers before, during, and after the start of anesthesia residency. Methods: Eighteen physician interns scheduled to begin anesthesia residency were recruited for evaluation at three time points: baseline (collected remotely before residency in June 2013); first-month visit 1 (July); and follow-up visit 2 (residency months 3 to 5, September–November). Validated scales were used to measure stress, anxiety, resilience, and wellness at all three time points. During visits 1 and 2, the authors measured resting heart-rate variability, responses to laboratory mental stress (hemodynamic, catecholamine, cortisol, and interleukin-6), and chronic stress indices (C-reactive protein, 24-h ambulatory heart rate and blood pressure, 24-h urinary cortisol and catecholamines, overnight heart-rate variability). Results: Thirteen interns agreed to participate (72% enrollment). There were seven men and six women, aged 27 to 33 yr. The mean ± SD of all study variables are reported. Conclusion: The novelty of this report is the prospective design in a defined cohort of residents newly exposed to the similar occupational stress of the operating environment. Because of the paucity of literature specific to the measures and stress conditions in this investigation, no data were available to generate a priori definition of primary outcomes and a data analytic plan. These findings will allow power analysis for future design of trials examining occupational stress and stress-reducing interventions. Given the importance of physician burnout in our country, the impact of chronic stress on resident wellness requires further study.

scholarly journals Correction: Heart Rate Variability as an Indicator of Chronic Stress Caused by Lameness in Dairy Cows

PLoS ONE ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. e0146625 ◽  
Author(s):  
Levente Kovács ◽  
Fruzsina Luca Kézér ◽  
Viktor Jurkovich ◽  
Margit Kulcsár-Huszenicza ◽  
János Tőzsér
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Dairy Cows ◽  
Chronic Stress
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