Biofeedback (BF) therapy methods have evolved considerably in recent years. The best known is biofeedback training based on heart rate variability (HRV), which used to treat asthma, depression, stress, and anxiety, among other conditions, by synchronizing the rhythm of breathing heartbeat. aim our research was develop a methodology test its applicability using photoplethysmographs smartphones c...

BACKGROUND Some evidence suggests that heart rate variability (HRV) biofeedback might be an effective way to treat anxiety and stress symptoms. To examine the effect of HRV biofeedback on symptoms of anxiety and stress, we conducted a meta-analysis of studies extracted from PubMed, PsycINFO and the Cochrane Library. METHODS The search identified 24 studies totaling 484 participants who receiv...

BACKGROUND AND OBJECTIVE In patients with alcohol dependence, ethyl-toxic damage of vasomotor and cardiac autonomic nerve fibers leads to autonomic imbalance with neurovascular and cardiac dysfunction, the latter resulting in reduced heart rate variability (HRV). Autonomic imbalance is linked to increased craving and cardiovascular mortality. In this study, we sought to assess the effects of HR...

When regulating negative emotional reactions, one goal is to reduce physiological reactions. However, not all regulation strategies succeed in doing that. We tested whether heart rate biofeedback helped participants reduce physiological reactions in response to negative and neutral pictures. When viewing neutral pictures, participants could regulate their heart rate whether the heart rate feedb...

The purpose of this study is to determine the effect 8 weeks HRV (Heart Rate Variability) training on happiness and coherence levels university students. According purpose, 20 sports management students from same class volunteered participate in study. 10 were selected randomly as experimental group while other control group. Data was collected with Oxford Happiness Inventory Inner Balance Hear...

When regulating negative emotional reactions, one goal is to reduce physiological reactions. However, not all regulation strategies succeed in doing that. We tested whether heart rate biofeedback helped participants reduce physiological reactions in response to negative and neutral pictures. When viewing neutral pictures, participants could regulate their heart rate whether the heart rate feedb...

this paper aims to propose an effective paroxysmal atrial fibrillation (paf) predictor which is based on the analysis of the heart rate variability (hrv) signal. predicting the onset of paf, based on non-invasive techniques, is clinically important and can be invaluable in order to avoid useless therapeutic intervention and to minimize the risks for the patients. this method consists of four st...

background: central obesity and hyperinsulinaemia of polycystic ovary syndrome (pcos) are associated with chronic sympathetic over activity. objective: to evaluate the autonomic functions and to indicate the superiority, if any, for those functions in the diagnosis of sympathetic over activity in pcos women. materials and methods: sixty-four pcos patients and 40 women served as the control grou...

The signature wounds of the Iraq War are traumatic brain injury and post traumatic stress disorder (PSTD). Due to an emergent need to address the symptoms of these wounds in returning Marines and navy corpsmen, a memorandum of understanding between the U.S. Marine Corps and East Carolina University’s Psychophysiology Lab and Biofeedback Clinic was signed and training services were begun in Febr...