keyword
MENU ▼
Read by QxMD icon Read
search

heart rate variability and exercise

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/29050039/cardiac-autonomic-dysfunction-in-offspring-of-hypertensive-parents-during-exercise
#2
Leonardo Barbosa de Almeida, Tiago Peçanha, Pedro Augusto de Carvalho Mira, Livia Victorino de Souza, Lílian Pinto da Silva, Daniel Godoy Martinez, Isabelle Magalhães Guedes Freitas, Mateus Camaroti Laterza
Offspring of hypertensive parents present autonomic dysfunction at rest and during physiological maneuvers. However, the cardiac autonomic modulation during exercise remains unknown. This study tested whether the cardiac autonomic modulation would be reduced in offspring of hypertensive parents during exercise. Fourteen offspring of hypertensive and 14 offspring of normotensive individuals were evaluated. The groups were matched by age (24.5±1.0 vs. 26.6±1.5 years; p=0.25) and BMI (22.8±0.6 vs. 24.2±1.0 kg/m(2); p=0...
October 19, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29039261/one-year-follow-up-of-the-capo-kids-trial-are-physical-benefits-maintained
#3
Rossana C Nogueira, Benjamin K Weeks, Belinda Beck
PURPOSE: To determine the 12-month maintenance of a 9-month, thrice-weekly, 10-minute high-intensity exercise program, delivered in schools, on bone and other health-related performance variables in prepubertal children. METHODS: All participants (N = 311) of the CAPO kids trial (testing times T1-T2) were contacted to undergo retesting (T3) of all original measures-including weight, standing and sitting height, calcaneal broadband ultrasound attenuation (Achilles, GE), and stiffness index (Achilles, GE)-waist circumference, resting heart rate, blood pressure, vertical jump, and aerobic capacity...
October 17, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29036765/development-of-an-anaerobic-threshold-hrlt-hrvt-estimation-equation-using-the-heart-rate-threshold-hrt-during-the-treadmill-incremental-exercise-test
#4
Joo-Ho Ham, Hun-Young Park, Youn-Ho Kim, Sang-Kon Bae, Byung-Hoon Ko, Sang-Seok Nam
PURPOSE: The purpose of this study was to develop a regression model to estimate the heart rate at the lactate threshold (HRLT) and the heart rate at the ventilatory threshold (HRVT) using the heart rate threshold (HRT), and to test the validity of the regression model. METHODS: We performed a graded exercise test with a treadmill in 220 normal individuals (men: 112, women: 108) aged 20-59 years. HRT, HRLT, and HRVT were measured in all subjects. A regression model was developed to estimate HRLT and HRVT using HRT with 70% of the data (men: 79, women: 76) through randomization (7:3), with the Bernoulli trial...
September 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29030236/long-term-aerobic-exercise-in-calsequestrin2-knockout-mice-accentuates-vagal-antagonism-during-%C3%AE-adrenergic-stimulation-which-restricts-heart-rate-acceleration-and-paradoxically-increases-abnormal-ryanodine-receptor-calcium-leak-in-ventricular-myocytes
#5
Hsiang-Ting Ho, Senthil Thambidorai, Björn C Knollmann, George E Billman, Sandor Györke, Anuradha Kalyanasundaram
BACKGROUND: Long-term aerobic exercise (EX) alters autonomic balance which may not be favorable in heart rate (HR) dependent arrhythmic diseases including Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) due to preexisting bradycardia and increased sensitivity to parasympathetic stimulation. OBJECTIVE: The purpose of this study was to determine if long-term exercise-induced autonomic adaptations modify CPVT susceptibility. METHODS: We determined exercise-induced parasympathetic effects on HR, arrhythmia incidence and intracellular sarcoplasmic reticulum (SR) Ca(2+) leak in atrial (ACM) and ventricular (VCM) cardiomyocytes, in EX Calsequestrin knockout (CASQ2(-/-)) mice, a model of CPVT...
October 10, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29021913/exergaming-can-be-an-innovative-way-of-enjoyable-high-intensity-interval-training
#6
Trine Moholdt, Stian Weie, Konstantinos Chorianopoulos, Alf Inge Wang, Kristoffer Hagen
OBJECTIVES: Exergames can replace sedentary time spent on computer gaming with physical activity. Previous research has found exergaming to elicit light-to-moderate exercise intensity. Our primary aim was to examine the exercise intensity of a newly developed biking exergame. METHODS: Eight males (23.9±0.6 years) played the exergame (PLAY) and walked (WALK) on three separate occasions, with the condition counterbalanced and in random sequence within each day. They were asked to PLAY and WALK for a minimum of 15 min and then continue for as long as they wanted...
2017: BMJ Open Sport & Exercise Medicine
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
#7
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/29016478/subjective-and-objective-responses-to-two-rugby-7-s-world-series-competitions
#8
Peter M Fowler, Andrew Murray, Abdulaziz Farooq, Nick Lumley, Lee Taylor
The purpose was to examine the utility of subjective and objective measures of player preparedness, interpreted at both a group and individual level, during two consecutive competitions of the World Rugby Sevens Series (WRSS). Subjective (sleep, energy and muscle soreness ratings) and objective [heart rate (HR) at rest (HRREST) and in response to submaximal exercise (HREX)] measures were obtained from 16 male Rugby-7s players from one team for three consecutive days (D1-3) at home (HOME) and upon arrival at four tournament (T1-4) locations (T1-New Zealand and T2-USA; T3-Hong Kong and T4-Tokyo) across two WRSS competitions (two tournaments per competition) separated by 1 month...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29016474/cardiac-autonomic-and-blood-pressure-responses-to-an-acute-bout-of-kettlebell-exercise
#9
Alexei Wong, Michael Nordvall, Michelle Walters-Edwards, Kevin Lastova, Gwendolyn Francavillo, Liane Summerfield, Marcos Sanchez-Gonzalez
Kettlebell (KB) training has become an extremely popular exercise program for improving both muscle strength and aerobic fitness. However, the cardiac autonomic modulation and blood pressure (BP) responses induced by an acute KB exercise session are currently unknown. Understanding the impact of this exercise modality on the post-exercise autonomic modulation and BP would facilitate appropriate exercise prescription in susceptible populations. The present study evaluated the effects of an acute session of KB exercise on heart rate variability (HRV) and BP responses in healthy individuals...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28989117/brachial-artery-blood-flow-dynamics-during-sinusoidal-leg-cycling-exercise-in-humans
#10
Yoshiyuki Fukuba, Masako Y Endo, Ayaka Kondo, Yuka Kikugawa, Kohei Miura, Hideaki Kashima, Masaki Fujimoto, Naoyuki Hayashi, Yoshiyuki Fukuoka, Shunsaku Koga
To explore the control of the peripheral circulation of a nonworking upper limb during leg cycling exercise, blood flow (BF) dynamics in the brachial artery (BA) were determined using a sinusoidal work rate (WR) exercise. Ten healthy subjects performed upright leg cycling exercise at a constant WR for 30 min, followed by 16 min of sinusoidal WR consisting of 4-min periods of WR fluctuating between a minimum output of 20 W and a maximum output corresponding to ventilatory threshold (VT). Throughout the protocol, pulmonary gas exchange, heart rate (HR), mean arterial blood pressure (MAP), blood velocity (BV), and cross-sectional area of the BA, forearm skin BF (SBF), and sweating rate (SR) were measured...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/28977060/minute-ventilation-variability-during-cardiopulmonary-exercise-test-is-higher-in-sedentary-men-than-in-athletes
#11
Renata Rodrigues Teixeira de Castro, Sabrina Pedrosa Lima, Allan Robson Kluser Sales, Antonio Claudio Lucas da Nóbrega
BACKGROUND: The occurrence of minute-ventilation oscillations during exercise, named periodic breathing, exhibits important prognostic information in heart failure. Considering that exercise training could influence the fluctuation of ventilatory components during exercise, we hypothesized that ventilatory variability during exercise would be greater in sedentary men than athletes. OBJECTIVE: To compare time-domain variability of ventilatory components of sedentary healthy men and athletes during a progressive maximal exercise test, evaluating their relationship to other variables usually obtained during a cardiopulmonary exercise test...
September 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28976263/physiological-and-perceptual-strain-of-firefighters-during-graded-exercise-to-exhaustion-at-40-%C3%A2-c-and-10-%C3%A2-c
#12
Erna von Heimburg, Mariann Sandsund, Tone Pedersen Rangul, Randi Eidsmo Reinertsen
PURPOSE: To study whether perceptual identification should be included as a measure to evaluate physiological stress. METHODS: Physiological variables; oxygen uptake (VO2), ventilation, heart rate (HR), blood lactate concentration, rectal temperature (Trec) and mean skin temperature (Tskin), perceptual variables; rate of perceived exertion (RPE), thermal sensation (TS) and time to exhaustion were measured at submaximal and maximal intensities during graded exercise on a treadmill to exhaustion in 12 firefighters wearing protective clothing and extra mass at 40 °C and 10 °C...
October 4, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28975517/the-effects-of-hyperoxia-on-sea-level-exercise-performance-training-and-recovery-a-meta-analysis
#13
REVIEW
Matthew M Mallette, Desmond G Stewart, Stephen S Cheung
BACKGROUND: Acute exercise performance can be limited by arterial hypoxemia, such that hyperoxia may be an ergogenic aid by increasing tissue oxygen availability. Hyperoxia during a single bout of exercise performance has been examined using many test modalities, including time trials (TTs), time to exhaustion (TTE), graded exercise tests (GXTs), and dynamic muscle function tests. Hyperoxia has also been used as a long-term training stimulus or a recovery intervention between bouts of exercise...
October 3, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28966708/clinical-outcomes-of-different-tempos-of-music-during-exercise-in-cardiac-rehabilitation-patients
#14
Jarad S Miller, Donna J Terbizan
This study examined the effects of stimulating and sedative music on ratings of perceived exertion (RPE), heart rate (HR), blood pressure (BP), and feeling status during exercise in cardiac rehabilitation (CR) patients. Twenty-two male and female older adults age 64 ± 8.0 y currently enrolled in phase III CR completed the study. Repeated measures crossover designs guided data collection. The manipulated independent variable was music condition (sedative, stimulating, and non-music control). The dependent variables were RPE, BP, HR, and feeling status with each represented by four repeated measures ANOVAs over time via SAS 9...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28964689/exercise-training-improves-hypertension-induced-autonomic-dysfunction-without-influencing-properties-of-peripheral-cardiac-vagus-nerve
#15
Octávio Barbosa Neto, Carla Cristina de Sordi, Gustavo Ribeiro da Mota, Moacir Marocolo, Rosângela Soares Chriguer, Valdo José Dias da Silva
We examined the vagal transfer function of autonomic heart rate (HR) control in anesthetized sedentary and exercise-trained Spontaneously Hypertensive Rats (SHR). To this end, male SHR and Wystar-Kyoto (WKY) rats with 48-50weeks of age-old were divided into 4 groups: sedentary (SHRS, n=12) and trained (SHRT, n=14) hypertensive rats, sedentary (WKYS, n=13) and trained (WKYT, n=13) normotensive rats. The trained groups were submitted to swimming protocol for 9weeks. Blood pressure (BP), HR, HR variability (HRV), BP variability (BPV), baroreflex sensitivity and cardiac tonus were recorded in baseline conditions...
September 14, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28959158/effects-of-a-pre-workout-supplement-on-hyperemia-following-leg-extension-resistance-exercise-to-failure-with-different-resistance-loads
#16
Jeffrey S Martin, Petey W Mumford, Cody T Haun, Micheal J Luera, Tyler W D Muddle, Ryan J Colquhoun, Mary P Feeney, Cameron S Mackey, Paul A Roberson, Kaelin C Young, David D Pascoe, Jason M DeFreitas, Nathaniel D M Jenkins, Michael D Roberts
BACKGROUND: We sought to determine if a pre-workout supplement (PWS), containing multiple ingredients thought to enhance blood flow, increases hyperemia associated with resistance training compared to placebo (PBO). Given the potential interaction with training loads/time-under-tension, we evaluated the hyperemic response at two different loads to failure. METHODS: Thirty males participated in this double-blinded study. At visit 1, participants were randomly assigned to consume PWS (Reckless™) or PBO (maltodextrin and glycine) and performed four sets of leg extensions to failure at 30% or 80% of their 1-RM 45-min thereafter...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28951724/prior-mental-fatigue-impairs-marksmanship-decision-performance
#17
James Head, Matthew S Tenan, Andrew J Tweedell, Michael E LaFiandra, Frank Morelli, Kyle M Wilson, Samson V Ortega, William S Helton
Purpose: Mental fatigue has been shown to impair subsequent physical performance in continuous and discontinuous exercise. However, its influence on subsequent fine-motor performance in an applied setting (e.g., marksmanship for trained soldiers) is relatively unknown. The purpose of this study was to investigate whether prior mental fatigue influences subsequent marksmanship performance as measured by shooting accuracy and judgment of soldiers in a live-fire scenario. Methods: Twenty trained infantry soldiers engaged targets after completing either a mental fatigue or control intervention in a repeated measure design...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28950398/cardiovascular-responses-to-different-resistance-exercise-protocols-in-elderly
#18
Amanda Veiga Sardeli, Lucas do Carmo Santos, Marina Lívia Venturini Ferreira, Arthur Fernades Gáspari, Bruno Rodrigues, Cláudia Regina Cavaglieri, Mara Patricia Traina Chacon-Mikahil
Increase in muscle mass and strength through resistance exercise (RE) has been highly recommended for healthy aging. On the other hand, RE could lead to acute cardiovascular risks prompted mainly by intense blood pressure elevations and cardiac autonomic imbalance. We compared the cardiovascular responses to three different RE protocols performed by 21 healthy elderly on a leg press machine. The protocols tested were high load (80% 1RM) until muscular failure (HL); low load (30% 1RM) until muscular failure (LL); low load, 30 repetitions followed by 3 sets of 15 repetitions, with 50% blood flow restriction (LL-BFR); and a control session (CON)...
September 26, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28948522/methodological-framework-for-heart-rate-variability-analysis-during-exercise-application-to-running-and-cycling-stress-testing
#19
David Hernando, Alberto Hernando, Jose A Casajús, Pablo Laguna, Nuria Garatachea, Raquel Bailón
Standard methodologies of heart rate variability analysis and physiological interpretation as a marker of autonomic nervous system condition have been largely published at rest, but not so much during exercise. A methodological framework for heart rate variability (HRV) analysis during exercise is proposed, which deals with the non-stationary nature of HRV during exercise, includes respiratory information, and identifies and corrects spectral components related to cardiolocomotor coupling (CC). This is applied to 23 male subjects who underwent different tests: maximal and submaximal, running and cycling; where the ECG, respiratory frequency and oxygen consumption were simultaneously recorded...
September 26, 2017: Medical & Biological Engineering & Computing
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
#20
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
keyword
keyword
95300
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"