keyword
MENU ▼
Read by QxMD icon Read
search

Low frequency hrv

keyword
https://www.readbyqxmd.com/read/29053066/different-times-of-day-do-not-change-heart-rate-variability-recovery-after-light-exercise-in-sedentary-subjects-24%C3%A2-hours-holter-monitoring
#1
Eliza Prodel, Tiago Peçanha, Lilian Pinto Da Silva, Rogério Baumgratz De Paula, Daniel Godoy Martinez, Jorge Roberto Perrout De Lima, Mateus Camaroti Laterza
Incidence of cardiovascular events follows a circadian rhythm with peak occurrence during morning. Disturbance of autonomic control caused by exercise had raised the question of the safety in morning exercise and its recovery. Furthermore, we sought to investigate whether light aerobic exercise performed at night would increase HR and decrease HRV during sleep. Therefore, the aim of this study was to test the hypothesis that morning exercise would delay HR and HRV recovery after light aerobic exercise, additionally, we tested the impact of late night light aerobic exercise on HR and HRV during sleep in sedentary subjects...
October 20, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29052467/the-effect-of-level-of-injury-and-physical-activity-on-heart-rate-variability-following-spinal-cord-injury
#2
Athanasios Kyriakides, Dimitrios Poulikakos, Angeliki Galata, Dimitrios Konstantinou, Elias Panagiotopoulos, Elisabeth Chroni
OBJECTIVE/BACKGROUND: To assess frequency domain heart rate variability (HRV) parameters at rest and in response to postural autonomic provocations in individuals with spinal cord injury (SCI) and investigate the autonomic influences on the heart of different physical activities. DESIGN: Cross-sectional study. METHODS: Ten subjects with complete cervical SCI and fourteen subjects with complete low thoracic SCI were prospectively recruited from the community and further divided in sedentary and physically active groups, the latter defined as regular weekly 4 hour physical activity for the preceding 3 months...
October 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29042294/impaired-cardiac-autonomic-regulation-and-long-term-risk-of-atrial-fibrillation-in-patients-with-coronary-artery-disease
#3
Santeri Nortamo, Olavi Ukkola, Antti Kiviniemi, Mikko Tulppo, Heikki Huikuri, Juha Perkiömäki
BACKGROUND: The influence of autonomic cardiac regulation on long-term risk of new-onset atrial fibrillation (AF) in coronary artery disease (CAD) is not well established. OBJECTIVE: To evaluate the value of heart rate variability (HRV), a marker of cardiac autonomic regulation, in predicting new-onset AF in CAD. METHODS: The Innovation to Reduce Cardiovascular Complications of Diabetes at the Intersection (ARTEMIS) study population consisted of 1,946 patients with CAD...
October 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29033120/heart-rate-variability-and-lifetime-risk-of-cardiovascular-disease-the%C3%A2-atherosclerosis-risk-in-communities-study
#4
Yasuhiko Kubota, Lin Y Chen, Eric A Whitsel, Aaron R Folsom
PURPOSE: The purpose of this study was to estimate the heart rate variability (HRV)-related lifetime cardiovascular disease (CVD) risk. METHODS: We followed 9744 participants without baseline CVD and used a life-table approach to estimate lifetime CVD risk (coronary heart disease, heart failure, and stroke) from 45 through 85 years according to several HRV measures (the SD of RR intervals [SDNN], the root mean square of successive differences of successive RR intervals, the mean of all normal RR intervals [meanNN], low-frequency [LF] and high-frequency [HF] power, and the LF/HF ratio)...
October 3, 2017: Annals of Epidemiology
https://www.readbyqxmd.com/read/29023323/optimizing-inter-session-reliability-of-heart-rate-variability-the-effects-of-artefact-correction-and-breathing-type
#5
Angela S Gisselman, Maria D'Amico, James M Smoliga
This study aimed to comprehensively investigate the reliability of multiple heart rate variability (HRV) parameters, and to explore the influence of artefact removal and breathing condition on HRV reliability. Resting HRV was collected using Polar Team monitors on forty-one participants (age: 19.9±1.2 years; 28 females, 13 males) during two separate days. Within each session, participants performed 10 minutes each of spontaneous and controlled breathing (randomized order). Kubios HRV analysis software was used to analyze 180s data epochs using "low" or "strong" artefact removal...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29022884/reply-to-comment-on-photoplethysmography-sampling-frequency-pilot-assessment-of-how-low-can-we-go-to-analyze-pulse-rate-variability-with-reliability
#6
Ahyoung Choi, Hangsik Shin
In his Comment, Hejjel argued that some contents previously published by us were inappropriate for statistical analysis of pulse rate variability due to high inter-individual dispersion. He also claimed that data collection over five minutes for short-term HRV analysis and data collection for an abnormal range of people were required. In order to give our perspective on these issues, we will discuss and clarify some of the existing literature and our own work on this subject, underlining the difference between electrocardiogram and photoplethysmogram...
October 12, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/29022753/lower-heart-rate-variability-at-baseline-is-associated-with-more-consecutive-intrusive-memories-in-an-experimental-distressing-film-paradigm
#7
Felicitas Rombold-Bruehl, Christian Otte, Babette Renneberg, Anna Schmied, Frank Zimmermann-Viehoff, Katja Wingenfeld, Stefan Roepke
OBJECTIVES: First evidence suggests that lower heart rate variability (HRV) is associated with more cognitive control deficits, a risk factor for the development of intrusive memories. The aim of this study was to determine whether high-frequency (HF) and low-frequency/high-frequency (LF/HF) ratio components of HRV at rest before an intrusion-inducing stressor would predict consecutive intrusive memories. METHODS: Healthy female participants (n = 60) watched an established distressing film which induced intrusions...
October 12, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/29018813/cardiovascular-consequences-of-repetitive-arousals-over-the-entire-sleep-duration
#8
Yanyan Wu, Rong Huang, Xu Zhong, Yi Xiao
OBJECTIVES: To explore the cardiovascular effects of nightlong repetitive arousals (RA). METHODS: Twenty healthy subjects participated in two consecutive sleep studies. The first one was free of intervention and the second study involved repetitive arousals induced by acoustical stimuli. Blood pressure, heart rate variability (HRV), arterial stiffness index (ASI), and serum markers including nitric oxide (NO), endothelin-1 (ET-1), C-reactive protein (CRP), interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and vascular endothelial growth factor (VEGF) were studied...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29018628/combined-moderate-and-high-intensity-exercise-with-dietary-restriction-improves-cardiac-autonomic-function-associated-with-a-reduction-in-central-and-systemic-arterial-stiffness-in-obese-adults-a-clinical-trial
#9
Min Hu, Shen Wang, Dan Wang, Qinhao Lai, Xiaoying Chen, Shiwei Duan, Mengke Zhao, Junhao Huang
OBJECTIVE: The present study aimed to assess the effects of exercise with dietary restriction on cardiac autonomic activity, arterial stiffness, and cardiovascular biomarkers in obese individuals. METHODS: Seventeen obese adults completed an 8-week exercise and dietary program. Anthropometry, body composition, and multiple biochemical markers were measured. We used carotid-femoral pulse wave velocity (cfPWV), brachial-ankle pulse wave velocity (baPWV), central blood pressure, and augmentation index (AIx) to assess arterial stiffness...
2017: PeerJ
https://www.readbyqxmd.com/read/28978872/the-impact-of-menstrual-cycle-phases-on-cardiac-autonomic-nervous-system-activity-an-observational-study-considering-lifestyle-diet-physical-activity-and-sleep-among-female-college-students
#10
Yuki Tada, Takahiro Yoshizaki, Yasutake Tomata, Yuri Yokoyama, Ayaka Sunami, Azumi Hida, Yukari Kawano
Studies examining the impact of menstrual cycle phases on the cardiac autonomic nervous system have produced inconsistent results. This study aimed to investigate this relationship, controlling for the confounding effects of diet, physical activity, and sleep, which can be affected by the menstrual cycle. Fifteen female college students with regular menses were enrolled. Data regarding 24-h heart rate variability (HRV), dietary intake, eating behavior, menstrual distress, and sleep and activity parameters were obtained during the follicular and luteal phases...
2017: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/28977292/association-between-leisure-time-and-commuting-physical-activities-with-heart-rate-variability-in-male-adolescents
#11
Aline Cabral Palmeira, Breno Quintella Farah, Antônio Henrique Germano Soares, Bruno Remígio Cavalcante, Diego Giulliano Destro Christofaro, Mauro Virgílio Gomes de Barros, Raphael Mendes Ritti-Dias
OBJECTIVE: To investigate the association between heart rate variability (HRV) parameters with leisure time and commuting physical activities in adolescent boys. METHODS: The sample included 1152 male adolescents aged 14 to 19 years. The variation of consecutive heart beats (RR intervals) was assessed and HRV parameters in time (SDNN, RMSSD, pNN50) and frequency domains (LF/HF) were calculated. Leisure time and commuting physical activities were obtained using a questionnaire...
July 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28966745/heart-rate-variability-in-restless-legs-syndrome-and-periodic-limb-movements-of-sleep
#12
Daniel A Barone, Matthew R Ebben, Miles DeGrazia, David Mortara, Ana C Krieger
INTRODUCTION: The relationship between the autonomic nervous system and restless legs syndrome (RLS) and periodic limb movements of sleep (PLMS) consists of varied and somewhat conflicting reports. In order to further elucidate these complexities, a retrospective analysis of polysomnography (PSG) records and clinical data was performed. METHODS: Records from 233 adult subjects were randomly selected and organized into one of four groups ("non-RLS/PLMS" [n=61], "RLS" [n=60], "PLMS" [n=58], and "RLS/PLMS" [n=54])...
April 2017: Sleep Science
https://www.readbyqxmd.com/read/28958870/predictive-value-of-very-low-frequency-at-spectral-analysis-among-patients-with-unexplained-syncope-assessed-by-head-up-tilt-testing
#13
Michela Anna Pia Ciliberti, Francesco Santoro, Luigi Flavio Massimiliano Di Martino, Antonio Cosimo Rinaldi, Giuseppe Salvemini, Francesco Cipriani, Antonio Ivano Triggiani, Fiorenzo Moscatelli, Anna Valenzano, Matteo Di Biase, Natale Daniele Brunetti, Giuseppe Cibelli
BACKGROUND: The role of heart rate variability (HRV) in the prediction of vasovagal syncope during head-up tilt testing (HUTt) is unclear. AIM: To evaluate the ability of the spectral components of HRV at rest to predict vasovagal syncope among patients with unexplained syncope referred for HUTt. METHODS: Twenty-six consecutive patients with unexplained syncope were enrolled in the study. All patients underwent HRV evaluation at rest (very low frequency [VLF], low frequency [LF], high frequency [HF] and LF/HF ratio) and during HUTt...
September 25, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28958456/associations-between-symptoms-of-depression-and-heart-rate-variability-an-exploratory-study
#14
Lucas Borrione, Andre R Brunoni, Bernardo Sampaio-Junior, Luana M Aparicio, Andrew H Kemp, Isabela Benseñor, Paulo A Lotufo, Renerio Fraguas
Major depressive disorder (MDD) is associated with decreased heart rate variability (HRV), a predictor of cardiovascular morbidity by many, but not all studies. This inconsistency could be due to the association of HRV with specific depressive symptoms. Here, we investigated the association of HRV parameters with components of depressive symptoms from 120 MDD patients, at baseline of a published trial comparing the effect of sertraline to transcranial direct current stimulation. We used Principal Component Analysis to extract components of the Hamilton Rating Scale for Depression (HAM-D-17), the Montgomery Asberg Depression Rating Scale (MADRS) and the Beck Inventory for Depressive Symptomatology (BDI)...
September 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28949087/effect-of-spontaneous-saliva-swallowing-on-short-term-heart-rate-variability-hrv-and-reliability-of-hrv-analysis
#15
Metin Yildiz, Serian Doma
The effects of effortful swallowing and solid meal ingestions on heart rate variability (HRV) have been examined previously. The effects of spontaneous saliva swallowing on short-term HRV and reliability of HRV analysis have not been studied before. The effect of saliva swallowing on HRV analyses parameters [meanRRI, SDNN (standard deviation of normal-to-normal), LF (low frequency), HF (high frequency) powers, LH/HF] and the reliability of LF and HF powers were investigated by frequency, time-frequency and intraclass correlation coefficient (ICC) analyses...
September 26, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28947079/evidence-for-aerobic-exercise-training-on-the-autonomic-function-in-patients-with-chronic-obstructive-pulmonary-disease-copd-a-systematic-review
#16
REVIEW
Jibril Mohammed, Eric Derom, Jessica Van Oosterwijck, Hellen Da Silva, Patrick Calders
OBJECTIVE: To assess evidence for the effectiveness of aerobic exercise training (AET) on the autonomic function (AF) outcomes in patients with chronic obstructive pulmonary disease (COPD). DATA SOURCES: Online databases of PubMed, CINAHL and Web of Science were systematically searched for all years till 26th of January, 2017. STUDY SELECTION: Clinical studies assessing any measure of AF following exercise training in patients with COPD were included...
July 22, 2017: Physiotherapy
https://www.readbyqxmd.com/read/28937235/heart-rate-variability-in-newborns
#17
K Javorka, Z Lehotska, M Kozar, Z Uhrikova, B Kolarovszki, M Javorka, M Zibolen
Heart rate (HR) and heart rate variability (HRV) in newborns is influenced by genetic determinants, gestational and postnatal age, and other variables. Premature infants have a reduced HRV. In neonatal HRV evaluated by spectral analysis, a dominant activity can be found in low frequency (LF) band (combined parasympathetic and sympathetic component). During the first postnatal days the activity in the high frequency (HF) band (parasympathetic component) rises, together with an increase in LF band and total HRV...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28930169/comparison-of-physiological-and-psychological-relaxation-using-measurements-of-heart-rate-variability-prefrontal-cortex-activity-and-subjective-indexes-after-completing-tasks-with-and-without-foliage-plants
#18
Sin-Ae Park, Chorong Song, Yun-Ah Oh, Yoshifumi Miyazaki, Ki-Cheol Son
The objective of this study was to compare physiological and psychological relaxation by assessing heart rate variability (HRV), prefrontal cortex activity, and subjective indexes while subjects performed a task with and without foliage plants. In a crossover experimental design, 24 university students performed a task transferring pots with and without a foliage plant for 3 min. HRV and oxyhemoglobin (oxy-Hb) concentration in the prefrontal cortex were continuously measured. Immediately thereafter, subjective evaluation of emotions was performed using a modified semantic differential (SD) method and a profile of mood state questionnaire (POMS)...
September 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28927867/cardiovascular-autonomic-regulation-inflammation-and-pain-in-rheumatoid-arthritis
#19
Ahmed M Adlan, Jet J C S Veldhuijzen van Zanten, Gregory Y H Lip, Julian F R Paton, George D Kitas, James P Fisher
BACKGROUND: Rheumatoid arthritis (RA) is a chronic inflammatory condition characterised by reduced heart rate variability (HRV) of unknown cause. We tested the hypothesis that low HRV, indicative of cardiac autonomic cardiovascular dysfunction, was associated with systemic inflammation and pain. Given the high prevalence of hypertension (HTN) in RA, a condition itself associated with low HRV, we also assessed whether the presence of hypertension further reduced HRV in RA. METHODS: In RA-normotensive (n=13), RA-HTN (n=17), normotensive controls (NC; n=17) and HTN (n=16) controls, blood pressure and heart rate were recorded...
September 13, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28912591/inter-individual-differences-in-heart-rate-variability-are-associated-with-inter-individual-differences-in-mind-reading
#20
Alexander Lischke, Daniela Lemke, Jörg Neubert, Alfons O Hamm, Martin Lotze
In the present study, we investigated whether inter-individual differences in vagally-mediated cardiac activity (high frequency heart rate variability, HF-HRV) would be associated with inter-individual differences in mind-reading, a specific aspect of social cognition. To this end, we recorded resting state HF-HRV in 49 individuals before they completed the Reading the Mind in the Eyes Test, a test that required the identification of mental states on basis of subtle facial cues. As expected, inter-individual differences in HF-HRV were associated with inter-individual differences in mental state identification: Individuals with high HF-HRV were more accurate in the identification of positive but not negative states than individuals with low HF-HRV...
September 14, 2017: Scientific Reports
keyword
keyword
95954
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"