keyword
MENU ▼
Read by QxMD icon Read
search

Heart rate variability, training

keyword
https://www.readbyqxmd.com/read/28350715/continuous-cardiac-autonomic-and-haemodynamic-responses-to-isometric-exercise
#1
Katrina A Taylor, Jonathan D Wiles, Damian D Coleman, Rajan Sharma, Jamie M O'Driscoll
PURPOSE: Elevated arterial blood pressure (BP) is associated with autonomic dysfunction and impaired haemodynamic control mechanisms. Isometric exercise (IE) training has been demonstrated effective at reducing BP; however, the continuous cardiovascular responses during IE are underinvestigated. We hypothesized that reflex autonomic cardiovascular control is an important mediator in reducing BP. To test our hypothesis, we investigated continuous cardiac autonomic modulation and baroreceptor reflex sensitivity (BRS) in response to IE...
March 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28350537/comparison-of-structured-and-unstructured-physical-activity-training-on-predicted-vo2max-and-heart-rate-variability-in-adolescents-a-randomized-control-trial
#2
Vivek Kumar Sharma, Senthil Kumar Subramanian, Krishnakumar Radhakrishnan, Rajathi Rajendran, Balasubramanian Sulur Ravindran, Vinayathan Arunachalam
BACKGROUND: Physical inactivity contributes to many health issues. The WHO-recommended physical activity for adolescents encompasses aerobic, resistance, and bone strengthening exercises aimed at achieving health-related physical fitness. Heart rate variability (HRV) and maximal aerobic capacity (VO2max) are considered as noninvasive measures of cardiovascular health. The objective of this study is to compare the effect of structured and unstructured physical training on maximal aerobic capacity and HRV among adolescents...
March 28, 2017: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/28344732/autonomic-modulation-in-older-women-using-resistance-exercise-as-a-countermeasure
#3
Hayden Gerhart, Yu Lun Tai, Curtis Fennell, Xián Mayo, J Derek Kingsley
It is unclear if resistance training (RT) can be used to alter declines in autonomic modulation associated with aging. Young women (YW; range 18-25 yrs) and older women (OW; range 50-72 yrs) were compared at baseline. Only OW underwent supervised RT 2 days a week for 12-weeks. Baseline and post-training measurements included heart rate variability (HRV) and complexity (Sample Entropy) to assess autonomic modulation. The 12-weeks of RT consisted of 9 exercises performing 3 sets of 8-12 repetitions. At baseline, group differences in maximal strength, and autonomic modulation were evaluated with a one-way ANOVA with BMI as a covariate...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28337432/the-current-and-future-role-of-heart-rate-variability-for-assessing-and-training-compassion
#4
James N Kirby, James R Doty, Nicola Petrocchi, Paul Gilbert
The evolution of mammalian caregiving involving hormones, such as oxytocin, vasopressin, and the myelinated vagal nerve as part of the ventral parasympathetic system, enables humans to connect, co-regulate each other's emotions and create prosociality. Compassion-based interventions draw upon a number of specific exercises and strategies to stimulate these physiological processes and create conditions of "interpersonal safeness," thereby helping people engage with, alleviate, and prevent suffering. Hence, compassion-based approaches are connected with our evolved caring motivation and attachment and our general affiliative systems that help regulate distress...
2017: Frontiers in Public Health
https://www.readbyqxmd.com/read/28323625/the-effects-of-stretching-training-on-cardiac-autonomic-function-in-obese-postmenopausal-women
#5
Alexei Wong, Marcos Sanchez-Gonzalez, Roy Kalfon, Stacey Alvarez-Alvarado, Arturo Figueroa
Context • Menopause and obesity are associated with autonomic dysfunction. Unconventional exercise modalities that include an important flexibility component seem to improve cardiac autonomic function by lowering sympathetic tone and increasing vagal modulation of the heart rate (HR). Yet clear evidence of the effects of stretching training (ST) on cardiac autonomic modulation is limited. Objective • The present study intended to examine the effects of ST on HR variability (HRV) and flexibility in obese postmenopausal women...
March 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28316572/eccentric-ergometer-training-promotes-locomotor-muscle-strength-but-not-mitochondrial-adaptation-in-patients-with-severe-chronic-obstructive-pulmonary-disease
#6
Norah J MacMillan, Sophia Kapchinsky, Yana Konokhova, Gilles Gouspillou, Riany de Sousa Sena, R Thomas Jagoe, Jacinthe Baril, Tamara E Carver, Ross E Andersen, Ruddy Richard, Hélène Perrault, Jean Bourbeau, Russell T Hepple, Tanja Taivassalo
Eccentric ergometer training (EET) is increasingly being proposed as a therapeutic strategy to improve skeletal muscle strength in various cardiorespiratory diseases, due to the principle that lengthening muscle actions lead to high force-generating capacity at low cardiopulmonary load. One clinical population that may particularly benefit from this strategy is chronic obstructive pulmonary disease (COPD), as ventilatory constraints and locomotor muscle dysfunction often limit efficacy of conventional exercise rehabilitation in patients with severe disease...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28314465/data-capture-and-communication-during-transfers-to-definitive-care-in-an-inclusive-trauma-system
#7
Nori L Bradley, Naisan Garraway, Nathaniel Bell, Nasira Lakha, S Morad Hameed
INTRODUCTION: Background trauma survivors in rural areas transferred to urban centers have higher mortality than trauma patients admitted directly to urban centers. Transfer data in trauma registries is important for injury control. Prehospital and early physiologic data may reflect processes of pre-hospital care. British Columbia currently has no standardized process for trauma patient data transfer. PATIENTS AND METHODS: We performed a retrospective data analysis for major trauma patients (ISS>15) transferred to a Level I trauma center over a 1year period (n=243)...
November 5, 2016: Injury
https://www.readbyqxmd.com/read/28285721/corrigendum-to-is-meditation-always-relaxing-investigating-heart-rate-heart-rate-variability-experienced-effort-and-likeability-during-training-of-three-types-of-meditation-int-j-psychophysiol-97-1-2015-38-45
#8
Anna-Lena Lumma, Bethany E Kok, Tania Singer
No abstract text is available yet for this article.
March 9, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/28285242/psychophysiological-correlates-of-emotion-regulation-training-in-adolescent-anxiety-evidence-from-the-novel-pier-task
#9
Nele A J De Witte, Stefan Sütterlin, Caroline Braet, Sven C Mueller
BACKGROUND: Anxiety disorders are the leading cause of mental illness in adolescence. While anxious adolescents show impairments in emotion processing and deficits in emotion regulation, few studies have attempted to improve emotion regulation within these populations. METHOD: This study used a multi-method design to test a newly developed emotion regulation training aimed at improving insight into emotions and instructing cognitive reappraisal. The efficacy of cognitive reappraisal was investigated in 27 clinically anxious youth (Age: M=12...
March 7, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28281192/reliability-of-thermodilution-derived-cardiac-output-with-different-operator-characteristics
#10
Scott C McKenzie, Kimble Dunster, Wandy Chan, Martin R Brown, David G Platts, George Javorsky, Chris Anstey, Shaun D Gregory
Cardiac output (CO) is commonly measured using the thermodilution technique at the time of right heart catheterisation (RHC). However inter-operator variability, and the operator characteristics which may influence that, has not been quantified. Therefore, this study aimed to assess inter-operator variability with the thermodilution technique using a mock circulation loop (MCL) with calibrated flow sensors. Participants were blinded and asked to determine 4 levels of CO using the thermodilution technique, which was compared with the MCL calibrated flow sensors...
March 9, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28269712/heart-rate-variability-as-a-biomarker-for-sedation-depth-estimation-in-icu-patients
#11
Sunil B Nagaraj, Sowmya M Ramaswamy, Siddharth Biswal, Emily J Boyle, David W Zhou, Lauren M Mcclain, Eric S Rosenthal, Patrick L Purdon, M Brandon Westover
An automated patient-specific system to classify the level of sedation in ICU patients using heart rate variability signal is presented in this paper. ECG from 70 mechanically ventilated adult patients with administered sedatives in an ICU setting were used to develop a support vector machine based system for sedation depth monitoring using several heart rate variability measures. A leave-one-subject-out cross validation was used for classifier training and performance evaluations. The proposed patient-specific system provided a sensitivity, specificity and an AUC of 64%, 84...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269056/body-position-classification-for-cardiorespiratory-measurement
#12
Marcel Mlynczak, Martin Berka, Wiktor Niewiadomski, Gerard Cybulski
Heart activity, or at least heart rate variability, is associated with body position. Our previous studies have confirmed that impedance pneumography may be used to record respiratory function, but the calibration coefficients for this method depend on position. Data were collected from 24 students (12 male, 12 female), who alternated positions between lying (on front, back, and right side), sitting and standing. Signals from an attached iPhone's internal sensors (accelerometer, gyroscope, magnetometer) were recorded and attitude relative to gravity was calculated...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268989/sleep-apnoea-classification-using-heart-rate-variability-ecg-derived-respiration-and-cardiopulmonary-coupling-parameters
#13
Philip de Chazal, Nadi Sadr
We investigated using heart rate variability (HRV), ECG derived respiration and cardiopulmonary coupling features (CPC) calculated from night-time single lead ECG signals to classify one-minute epochs for the presence or absence of sleep apnoea. We used the 35 training recordings of the M.I.T. Physionet Apnea-ECG database. Performance was assessed with leave-one-record-out cross-validation. The best classification performance was achieved using the CPC features in conjunction with the time-domain based HRV parameters...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268987/identifying-individual-sleep-apnea-hypoapnea-epochs-using-smartphone-based-pulse-oximetry
#14
Ainara Garde, Parastoo Dekhordi, J Mark Ansermino, Guy A Dumont
Sleep apnea, characterized by frequent pauses in breathing during sleep, poses a serious threat to the healthy growth and development of children. Polysomnography (PSG), the gold standard for sleep apnea diagnosis, is resource intensive and confined to sleep laboratories, thus reducing its accessibility. Pulse oximetry alone, providing blood oxygen saturation (SpO2) and blood volume changes in tissue (PPG), has the potential to identify children with sleep apnea. Thus, we aim to develop a tool for at-home sleep apnea screening that provides a detailed and automated 30 sec epoch-by-epoch sleep apnea analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268857/hrv4training-large-scale-longitudinal-training-load-analysis-in-unconstrained-free-living-settings-using-a-smartphone-application
#15
Marco Altini, Oliver Amft
We describe an approach to support athletes at various fitness levels in their training load analysis using heart rate (HR) and heart rate variability (HRV). A smartphone-based application (HRV4Training) was developed that captures heart activity over one to five minutes using photoplethysmography (PPG) and derives HR and HRV features. HRV4Training integrated a guide for an early morning spot measurement protocol and a questionnaire to capture self-reported training activity. The smartphone application was made publicly available for interested users to quantify training effect...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28248198/rem-sleep-estimation-based-on-autonomic-dynamics-using-r-r-intervals
#16
Heenam Yoon, Su Hwan Hwang, Jae-Won Choi, Yu Jin Lee, Do-Un Jeong, Kwang Suk Park
OBJECTIVE: We developed an automatic algorithm to determine rapid eye movement (REM) sleep on the basis of the autonomic activities reflected in heart rate variations. APPROACH: The heart rate variability (HRV) parameters were calculated using the R-R intervals from an electrocardiogram (ECG). A major autonomic variation associated with the sleep cycle was extracted from a combination of the obtained parameters. REM sleep was determined with an adaptive threshold applied to the acquired feature...
March 1, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28247979/effects-of-exercise-training-intensity-on-cardiac-autonomic-regulation-in-habitual-smokers
#17
Choun-Sub Kim, Maeng-Kyu Kim, Hye-Young Jung, Mi-Ji Kim
BACKGROUND: The sympathoexcitatory effects of cigarette smoking cause an autonomic imbalance that may lead to cardiovascular disease. Aerobic training improves autonomic function by developing cardiorespiratory fitness; however, it is still uncertain whether aerobic training ameliorates the compromised autonomic modulation in smokers. This study aimed to investigate the effects of 8 weeks' aerobic training at different exercise intensities on autonomic regulation in habitual smokers...
March 1, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28240953/cardiorespiratory-function-in-thoroughbreds-during-locomotion-on-a-treadmill-at-an-incline-or-decline
#18
Hajime Ohmura, Kazutaka Mukai, Toshiyuki Takahashi, Hiroko Aida, James H Jones
OBJECTIVE To determine cardiorespiratory responses of Thoroughbreds to uphill and downhill locomotion on a treadmill at identical gradients. ANIMALS 5 highly trained Thoroughbred geldings. PROCEDURES Thoroughbreds were exercised for 2-minute intervals on a treadmill at 1.7, 3.5, 6.0, 8.0, and 10.0 m/s at a 4% incline, 0% incline (horizontal plane), and 4% decline in random order on different days. Stride frequency, stride length, and cardiopulmonary and O2-transport variables were measured and analyzed by means of repeated-measures ANOVA and Holm-Šidák pairwise comparisons...
March 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28240715/influence-of-environmental-conditions-on-performance-and-heart-rate-responses-to-the-30-15-incremental-fitness-test-in-rugby-union-athletes
#19
Thomas W Jones, Alex O W Natera, Jacob Jennings, Aiden J Oakley
The purpose of this study was to examine the differences in performance and heart rate responses between a high heat outdoor condition (34.0°C, 64.1% humidity) and a temperate indoor condition (22.0°C, 50.0% humidity) during the 30-15 intermittent fitness test (30-15IFT). Eight highly trained Rugby Union players (28.1 ± 1.5 years, 181.4 ± 8.8 cm, 88.4 ± 13.3kg) completed the 30-15IFT in two different temperature conditions. Dependant variables recorded and analysed included; final running speed of the 30-15IFT, heart rate (HR) at rest (HR rest), maximum HR (Max HR), HR recovery (HRR), average HR (HR ave) and sub-maximal HR corresponding to 25%, 50% and 75% of final test speed (HR 25%, HR 50% and HR 75%) and HR at 13 km·h (HR 13 km·h)...
February 23, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28235524/awake-tracheal-intubation-in-anticipated-difficult-airways-lma-fastrach-vs-flexible-bronchoscope-a-pilot-study
#20
Sherine F Hanna, Marianne Mikat-Stevens, James Loo, Raj Uppal, W Scott Jellish, Matthew Adams
STUDY OBJECTIVE: To compare the use of LMA Fastrach intubating laryngeal mask airway (ILMA) to flexible bronchoscopy (FB) for awake intubation in patients with difficult airways. DESIGN: Randomized prospective study. SETTING: Large academic medical center. PATIENTS: Forty adult patients, American Society of Anesthesiologists I-IV, meeting the criteria for awake intubation based on history and physical examination. INTERVENTIONS: After sedation and airway topicalization, patients were randomized to either FB group, n=19, or ILMA group, n=21...
February 2017: Journal of Clinical Anesthesia
keyword
keyword
56119
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"