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resting heart rate

Luqing Wei, Hong Chen, Guo-Rong Wu
The neurovisceral integration model has shown a key role of the amygdala in neural circuits underlying heart rate variability (HRV) modulation, and suggested that reciprocal connections from amygdala to brain regions centered on the central autonomic network (CAN) are associated with HRV. To provide neuroanatomical evidence for these theoretical perspectives, the current study used covariance analysis of MRI-based gray matter volume (GMV) to map structural covariance network of the amygdala, and then determined whether the interregional structural correlations related to individual differences in HRV...
2018: Frontiers in Human Neuroscience
Przemyslaw Guzik, Caroline Piekos, Olivia Pierog, Naiman Fenech, Tomasz Krauze, Jaroslaw Piskorski, Andrzej Wykretowicz
We compared classic ECG-derived versus a mobile approach to heart rate variability (HRV) measurement. METHODS & RESULTS: 29 young adult healthy volunteers underwent a simultaneous recording of heart rate using an ECG and a chest heart rate monitor at supine rest, during mental stress and active standing. Mean RR interval, Standard Deviation of Normal-to-Normal (SDNN) of RR intervals, and Root Mean Square of the Successive Differences (RMSSD) between RR intervals were computed in 168 pairs of 5-minute epochs by in-house software on a PC (only sinus beats) and by mobile application "ELITEHRV" on a smartphone (no beat type identification)...
May 1, 2018: International Journal of Cardiology
Julie E Finnell, Brandon L Muniz, Akhila R Padi, Calliandra M Lombard, Casey M Moffitt, Christopher S Wood, L Britt Wilson, Lawrence P Reagan, Marlene A Wilson, Susan K Wood
BACKGROUND: Women are at greater risk than men of developing depression and comorbid disorders such as cardiovascular disease. This enhanced risk begins at puberty and ends following menopause, suggesting a role for ovarian hormones in this sensitivity. Here we used a model of psychosocial witness stress in female rats to determine the stress-induced neurobiological adaptations that underlie stress susceptibility in an ovarian hormone-dependent manner. METHODS: Intact or ovariectomized (OVX) female rats were exposed to five daily 15-minute witness-stress exposures...
January 31, 2018: Biological Psychiatry
Marc N Jarczok, Corina Aguilar-Raab, Julian Koenig, Michael Kaess, Jeremy C Borniger, Randy J Nelson, Martica Hall, Beate Ditzen, Julian F Thayer, Joachim E Fischer
INTRODUCTION: Successful regulation of emotional states is positively associated to mental health, while difficulties in regulating emotions are negatively associated to overall mental health and in particular associated with anxiety or depression symptoms. A key structure associated to socio-emotional regulatory processes is the central autonomic network. Activity in this structure is associated to vagal activity can be indexed noninvasively and simply by measures of peripheral cardiac autonomic modulations such as heart rate variability...
March 15, 2018: Chronobiology International
Elie Fiogbé, Rafaela Ferreira, Márcio Antônio Gonçalves Sindorf, Silvia Aparecida Tavares, Keiti Passoni de Souza, Marcelo de Castro Cesar, Charles Ricardo Lopes, Marlene Aparecida Moreno
BACKGROUND AND PURPOSE: It is important to assess the effectiveness and efficiency of water-based training programs in order to prescribe it as an alternative in cardiac rehabilitation for patients who have coronary artery disease (CAD). In these patients, autonomic dysfunction is an important physiological change strongly associated with adverse outcomes, morbidity, and mortality. Given that the beneficial effects of physical training in CAD patients have been traditionally evidenced with programs involving land-based aerobic exercises, this study aims to evaluate the effects of water aerobic exercise training (WAET) on the autonomic modulation of heart rate (HR) and body composition, in the rehabilitation of CAD patients...
March 14, 2018: Physiotherapy Research International: the Journal for Researchers and Clinicians in Physical Therapy
Jennifer A Bunn, James W Navalta, Charles J Fountaine, Joel D Reece
Wearable physical activity trackers are a popular and useful method to collect biometric information at rest and during exercise. The purpose of this systematic review was to summarize recent findings of wearable devices for biometric information related to steps, heart rate, and caloric expenditure for several devices that hold a large portion of the market share. Searches were conducted in both PubMed and SPORTdiscus. Filters included: humans, within the last 5 years, English, full-text, and adult 19+ years...
2018: International Journal of Exercise Science
Philip W Cameron, Noelle C Soltero, Justin Byers
Mild traumatic brain injuries (mTBIs) are common in contact sports. There is an association between mTBIs and altered motor function. BioSway technology measures individuals' balance using the Balance Error Scoring System (BESS). Prior to incorporating BESS testing in concussion protocol, other variables that influence the BESS test require review. The objective of this study is to determine if game fatigue in hockey players also influences the BESS score. 23 male (21.08 ± 1.09) National Collegiate Athletic Association (NCAA) athletes were tested using the BioSway™ (Biodex, USA)...
2018: International Journal of Exercise Science
Jonathan S Howard, Cherilyn N McLester, Thomas W Evans, John R McLester, Jimmy P Calloway
The PhysioFlow™ is a piece of equipment that uses bioimpedance cardiography to measure central hemodynamics. The purpose of this research was to explore the novel approach of monitoring central hemodynamics during free weight resistance exercise using bioimpedance cardiography throughout a 5 repetition maximum (5RM). Thirty participants ranging from beginner to advanced lifters (16 males and 14 females) completed a 5RM for back squat, seated push press, and bicep curl while connected to the PhysioFlow™ to assess the response of heart rate (HR), stroke volume (SV), cardiac output (Q), and ejection fraction (EF)...
2018: International Journal of Exercise Science
Seol-Jung Kang, Gi-Chul Ha, Kwang-Jun Ko
Background/Objective: The present study aimed to investigate the association between metabolic syndrome and cardiorespiratory fitness according to resting heart rate of Korean male adults. Methods: A total of 11,876 male adults aged 20-65 years who underwent health examinations from 2010 to 2015 at a National Fitness Centre in South Korea were included. Subjects' resting heart rate, cardiorespiratory fitness (VO2 max), and metabolic syndrome parameters were collected...
June 2017: Journal of Exercise Science and Fitness
Alexander Lischke, Rike Pahnke, Anett Mau-Moeller, Martin Behrens, Hans J Grabe, Harald J Freyberger, Alfons O Hamm, Matthias Weippert
In the present study, we investigated whether inter-individual differences in vagally mediated heart rate variability (vmHRV) would be associated with inter-individual differences in empathy and alexithymia. To this end, we determined resting state HF-HRV in 90 individuals that also completed questionnaires assessing inter-individual differences in empathy and alexithymia. Our categorical and dimensional analyses revealed that inter-individual differences in HF-HRV were differently associated with inter-individual differences in empathy and alexithymia...
2018: Frontiers in Psychology
Laís Manata Vanzella, Aline Fernanda Barbosa Bernardo, Tatiana Dias de Carvalho, Franciele Marques Vanderlei, Anne Kastelianne França da Silva, Luiz Carlos Marques Vanderlei
OBJECTIVE: To evaluate autonomic modulation in individuals with COPD, compared with healthy controls, via recurrence plots (RPs) and linear heart rate variability (HRV) indices. METHODS: We analyzed data on 74 volunteers, who were divided into two groups: COPD (n = 43) and control (n = 31). For calculation of HRV indices, heart rate was measured beat-by-beat during 30 min of supine rest using a heart-rate meter. We analyzed linear indices in the time and frequency domains, as well as indices derived from the RPs...
January 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
Amir Pourmorteza, Noemie Keller, Richard Chen, Albert Lardo, Henry Halperin, Marcus Y Chen, Elliot McVeigh
Resting regional wall motion abnormality (RWMA) has significant prognostic value beyond the findings of computed tomography (CT) coronary angiography. Stretch quantification of endocardial engraved zones (SQUEEZ) has been proposed as a measure of regional cardiac function. The purpose of the work reported here was to determine the effect of lowering the radiation dose on the precision of automatic SQUEEZ assessments of RWMA. Chronic myocardial infarction was created by a 2-h occlusion of the left anterior descending coronary artery in 10 swine (heart rates 80-100, ejection fraction 25-57%)...
March 13, 2018: International Journal of Cardiovascular Imaging
Harry M Roberts, Jonathan P Moore, Jeanette M Thom
PURPOSE: To compare the serum cartilage oligomeric matrix protein (COMP) and hyaluronan (HA) response to walking (high-repetition loading) and resistance training exercise (low-repetition loading) in males and females. METHODS: 15 males (age: 28 ± 6 years; BMI: 24 ± 2; mean ± SD) and 15 females (age: 26 ± 4 years; BMI: 23 ± 2) completed both a 40-min walk at 80% of maximum heart rate and a 40-min lower body resistance training protocol, separated by a minimum of 48 h...
March 13, 2018: European Journal of Applied Physiology
Gilad Sorek, Sharon Shaklai, Shirley Meyer, Michal Katz-Leurer
INTRODUCTION: Adolescents with acquired brain injury (ABI) present a range of physical and cognitive as well as cardiac autonomic control system (CACS) dysfunctions. AIM: To examine the CACS response to an executive task, a physical task and a combined physical and executive task, in adolescents with ABI and typically developed (TD) controls. METHODS: Included were two groups: The first group consisted of 17 adolescents (11-18 years) with ABI, during the in-patient or out-patient rehabilitation period...
March 13, 2018: Brain Injury: [BI]
Vittorio Iacovella, Luca Faes, Uri Hasson
Neuroimaging research has shown that different cognitive tasks induce relatively specific activation patterns, as well as less task-specific deactivation patterns. Here we examined whether individual differences in Autonomic Nervous System (ANS) activity during task performance correlate with the magnitude of task-induced deactivation. In an fMRI study, participants performed a continuous mental arithmetic task in a task/rest block design, while undergoing combined fMRI and heart / respiration rate acquisitions using photoplethysmograph and respiration belt...
March 9, 2018: Neuropsychologia
Elena Makovac, Jonathan Smallwood, David R Watson, Frances Meeten, Hugo D Critchley, Cristina Ottaviani
Background: The Cognitive Avoidance Theory of Worry argues that worry is a cognitive strategy adopted to control the physiological arousal associated with anxiety. According to this theory, pathological worry, as in Generalized Anxiety Disorder (GAD), is verbal in nature, negative and abstract, rather than concrete. Neuroimaging studies link the expression of worry to characteristic modes of brain functional connectivity, especially in relation to the amygdala. However, the distinctive features of worry (verbal, abstract, negative), and their relationship to physiological arousal, have not so far been mapped to brain function...
2018: NeuroImage: Clinical
Satomi Minato, Kaori Kitaoka, Mika Takeuchi, Ayaka Tsuboi, Miki Kurata, Shigehiro Tanaka, Tsutomu Kazumi, Keisuke Fukuo
Objective: We test the hypothesis that aspartate aminotransferase (AST) may be associated inversely with serum triglycerides (TG) and positively with high density lipoprotein (HDL) cholesterol in young athletes because athletes have larger amounts of muscle mass. Research design and methods: Pearson's correlation coefficients were calculated between serum AST and alanine aminotransferase (ALT) and body composition identified by dual-energy X-ray absorptiometry, markers of insulin resistance, serum lipids, lipoproteins, apolipoproteins, adiponectin and leptin in 174 female collegiate athletes (18-22 years)...
2018: BMJ Open Diabetes Research & Care
Clothilde Philouze, Philippe Obert, Stéphane Nottin, Asma Benamor, Olivier Barthez, Falah Aboukhoudir
BACKGROUND: Discrepancies are present in the literature on resting myocardial mechanics in patients with uncomplicated type 2 diabetes mellitus (T2DM). Data are noticeably sparse regarding circumferential function and torsional mechanics. Resting deformation imaging may not be sensitive enough to detect subtle dysfunctions. The aim of this study was thus to comprehensively evaluate myocardial mechanics in patients with T2DM at rest and to investigate whether dobutamine stress echocardiography could unmask functional alterations that would remain otherwise subtle at rest...
March 8, 2018: Journal of the American Society of Echocardiography
Marco Herbsleb, Andy Schumann, Berend Malchow, Christian Puta, P Christian Schulze, Holger W Gabriel, Karl-Jürgen Bär
The elevated cardiovascular risk of patients with schizophrenia contributes to a reduced life expectancy of 15-20years. This study investigated whether cardiac autonomic dysfunction (CADF) in schizophrenia is related to chronotropic incompetence, an established cardiovascular risk marker. We investigated thirty-two patients suffering from paranoid schizophrenia and thirty-two control subjects matched for age, sex, body mass index and fat free mass. A cardiopulmonary exercise test (CPET) was performed to study heart rate responses to exercise as well as submaximal (ventilatory threshold 1, VT1 ) and maximal endurance capacities (peak oxygen consumption, VO2peak ; peak power output, Ppeak )...
March 8, 2018: Schizophrenia Research
Valentina Prando, Francesca Da Broi, Mauro Franzoso, Anna Pia Plazzo, Nicola Pianca, Maura Francolini, Cristina Basso, Matthew W Kay, Tania Zaglia, Marco Mongillo
AIM: Cardiac sympathetic neurons (SNs) finely tune the rate and strength of heart contractions to match the blood demand, both at rest and during acute stresses, through the release of norepinephrine (NE). Junctional sites at the interface between the two cell types have been observed, but whether direct neuro-cardiac coupling has a role in heart physiology has not thus far been clearly demonstrated. METHODS AND RESULTS: We investigated the dynamics of SN/cardiomyocyte intercellular signalling, both by FRET-based imaging of cAMP in co-cultures, as a readout of cardiac β-AR activation, and in vivo, using optogenetics in transgenic mice with SN-specific expression of Channelrhodopsin-2...
March 10, 2018: Journal of Physiology
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