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heart rate variability and exercise

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https://www.readbyqxmd.com/read/28076389/a-computational-study-on-the-relation-between-resting-heart-rate-and-atrial-fibrillation-hemodynamics-under-exercise
#1
Matteo Anselmino, Stefania Scarsoglio, Andrea Saglietto, Fiorenzo Gaita, Luca Ridolfi
AIMS: Clinical data indicating a heart rate (HR) target during rate control therapy for permanent atrial fibrillation (AF) and assessing its eventual relationship with reduced exercise tolerance are lacking. The present study aims at investigating the impact of resting HR on the hemodynamic response to exercise in permanent AF patients by means of a computational cardiovascular model. METHODS: The AF lumped-parameter model was run to simulate resting (1 Metabolic Equivalent of Task-MET) and various exercise conditions (4 METs: brisk walking; 6 METs: skiing; 8 METs: running), considering different resting HR (70 bpm for the slower resting HR-SHR-simulations, and 100 bpm for the higher resting HR-HHR-simulations)...
2017: PloS One
https://www.readbyqxmd.com/read/28067532/mental-stress-induced-left-ventricular-dysfunction-and-adverse-outcome-in-ischemic-heart-disease-patients
#2
Julia L Sun, Stephen H Boyle, Zainab Samad, Michael A Babyak, Jennifer L Wilson, Cynthia Kuhn, Richard C Becker, Thomas L Ortel, Redford B Williams, Joseph G Rogers, Christopher M O'Connor, Eric J Velazquez, Wei Jiang
Aims Mental stress-induced myocardial ischemia (MSIMI) occurs in up to 70% of patients with clinically stable ischemic heart disease and is associated with increased risk of adverse prognosis. We aimed to examine the prognostic value of indices of MSIMI and exercise stress-induced myocardial ischemia (ESIMI) in a population of ischemic heart disease patients that was not confined by having a recent positive physical stress test. Methods and results The Responses of Mental Stress Induced Myocardial Ischemia to Escitalopram Treatment (REMIT) study enrolled 310 subjects who underwent mental and exercise stress testing and were followed annually for a median of four years...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28065709/-the-exercise-training-restores-the-heart-rate-variability-in-heart-failure-patients-a-systematic-review
#3
Victoria Segovia, Carlos Manterola, Marcelo González, Iván Rodríguez-Núñez
: Cardiovascular diseases are an important cause of morbidity and mortality in the general population. In this sense the autonomic imbalance is the cornerstone of the physiopathology underlying the development of these diseases. The aim of this study was to determine the efficacy of exercise training on heart rate variability (HRV) in adult patients with chronic heart failure. METHODOLOGY: A systematic literature review was conducted on electronic databases. The considered studies were randomized clinical trials, quasi-experimental studies with non-randomized control group, quasi-experimental studies with analysis of pre and post intervention and crossover studies with randomly assigned training and detraining periods...
January 5, 2017: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/28060977/-validation-of-the-borg-scale-in-participants-with-type-2-diabetes-mellitus
#4
Walter Rosales, Cristian Cofré, Cicchitti Alejandra, Celina Bertona, Alejandro Vizcaya, Joaquín González, Jorge Bajuk, Martín Rodríguez
BACKGROUND: Borg Rating of Perceived Exertion Scale (RPE) is a psychophysiological measurements that translates physical stimuli to a psychological construct, which is perceived exertion. Its use is simple and it represents the effort perception. Each number of the scale is associated with a heart rate or percentage of maximal oxygen consumption (VO2max), which estimates the intensity of exercise. AIM: To validate RPE scale in patients with type 2 diabetes mellitus (DM2)...
September 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28051319/effects-of-yoga-on-heart-rate-variability-and-depressive-symptoms-in-women-a-randomized-controlled-trial
#5
I-Hua Chu, Wen-Lan Wu, I-Mei Lin, Yu-Kai Chang, Yuh-Jen Lin, Pin-Chen Yang
OBJECTIVES: The purpose of the study was to investigate the effects of a 12-week yoga program on heart rate variability (HRV) and depressive symptoms in depressed women. METHODS: This was a randomized controlled trial. Twenty-six sedentary women scoring ≥14 on the Beck Depression Inventory-II were randomized to either the yoga or the control group. The yoga group completed a 12-week yoga program, which took place twice a week for 60 min per session and consisted of breathing exercises, yoga pose practice, and supine meditation/relaxation...
January 4, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28045559/acute-blood-pressure-response-in-hypertensive-elderly-women-immediately-after-water-aerobics-exercise-a-crossover-study
#6
Raphael Martins Cunha, José Vilaça-Alves, Marcelo Vasconcelos Noleto, Juliana Sá Silva, Andressa Moura Costa, Christoffer Novais Farias Silva, Thaís Inácio Rolim Póvoa, Alexandre Machado Lehnen
Water aerobics exercise is widely recommended for elderly people. However, little is known about the acute effects on hemodynamic variables. Thus, we assessed the effects of a water aerobic session on blood pressure in hypertensive elderly women. Fifty hypertensive elderly women aged 67.8 ± 4.1 years, 1.5 ± 0.6 m high and BMI 28.6 ± 3.9 kg/m(2), participated in a crossover clinical trial. The experiment consisted of a 45-minute water aerobics session (70%-75% HRmax adjusted for the aquatic environment) (ES) and a control session (no exercise for 45 minutes) (CS)...
January 3, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28041898/-graded-cycling-test-with-talk-test-is-a-reliable-test-to-monitor-cardiovascular-fitness-in-patients-with-minor-stroke
#7
Rikke Steen Krawcyk, Anders Vinther, Nicolas Caesar Petersen, Christina Kruuse
BACKGROUND: Physical exercise is generally recommended as part of life style changes post stroke. Monitoring cardiovascular effects may help motivate patients for further exercise, and can be an instrument to assess intervention effects in clinical trials. In 1 of 4 stroke patients, the heart rate variability may challenge currently used cardiovascular monitoring. The Graded Cycling Test with Talk Test is a submaximal exercise test independent of heart rate variability, shown reliable for patients with cardiac disease...
December 29, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28031762/effects-of-fatigue-on-throwing-performance-in-experienced-team-handball-players
#8
Alberto Nuño, Ignacio J Chirosa, Roland van den Tillaar, Rafael Guisado, Ignacio Martín, Isidoro Martinez, Luis J Chirosa
The purpose of this study was to investigate the effect of central and peripheral physiological fatigue on throwing accuracy and ball release velocity in team handball. Twenty male subjects (age 24.7 ± 3.9 yrs, body mass 88.5 ± 5.0 kg, body height 1.86 ± 0.05 m, training experience 12.7 ± 3.8 yrs) from one handball team participated in this study. The participants completed four sets of eight laps of a circuit that consisted of specific team handball drills/exercises, with decreasing recovery times between the laps in each set in order to induce physiological fatigue...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031758/somatic-endurance-performance-and-heart-rate-variability-profiles-of-professional-soccer-players-grouped-according-to-age
#9
Michal Botek, Jakub Krejčí, Andrew J McKune, Iva Klimešová
This cross-sectional study compared somatic, endurance performance determinants and heart rate variability (HRV) profiles of professional soccer players divided into different age groups: GI (17-19.9 years; n = 23), GII (20-24.9 years; n = 45), GIII (25-29.9 years; n = 30), and GIV (30-39 years; n = 26). Players underwent somatic and HRV assessment and maximal exercise testing. HRV was analyzed by spectral analysis of HRV, and high (HF) and low (LF) frequency power was transformed by a natural logarithm (Ln)...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28029066/cardiac-autonomic-and-haemodynamic-recovery-after-a-single-session-of-aerobic-exercise-with-and-without-blood-flow-restriction-in-older-adults
#10
Marina Lívia Venturini Ferreira, Amanda Veiga Sardeli, Giovana Vergínia De Souza, Valéria Bonganha, Lucas Do Carmo Santos, Alex Castro, Cláudia Regina Cavaglieri, Mara Patrícia Traina Chacon-Mikahil
This study investigated the autonomic and haemodynamic responses to different aerobic exercise loads, with and without blood flow restriction (BFR). In a crossover study, 21 older adults (8 males and 13 females) completed different aerobic exercise sessions: low load without BFR (LL) (40% VO2max), low load with BFR (LL-BFR) (40% VO2max + 50% BFR) and high load without BFR (HL) (70% VO2max). Heart rate variability and haemodynamic responses were recorded during rest and throughout 30 min of recovery. HL reduced R-R interval, the root mean square of successive difference of R-R intervals and high frequency during 30 min of recovery at a greater magnitude compared with LL and LL-BFR...
December 28, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28026153/clinical-and-hemodynamic-characteristics-of-pulmonary-hypertension-associated-with-interstitial-lung-disease-in-china
#11
Lan Wang, Qin-Hua Zhao, Bigyan Pudasaini, Rong Jiang, Su-Gang Gong, Jing He, Ping Yuan, Jin-Ming Liu
BACKGROUND: Pulmonary hypertension (PH) is an important complication of interstitial lung disease (ILD). The aim of the present study was to investigate characteristics and prognosis of ILD associated PH in a predominantly Chinese patient cohort. METHODS: Consecutive patients with ILD associated PH, confirmed by right heart catheterization at shanghai pulmonary hospital were included in the study. Characteristics at baseline and during follow-up, as well as survival, were analyzed...
December 27, 2016: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28013058/leg-compressions-improve-ventilatory-efficiency-while-reducing-peak-and-post-exercise-blood-lactate-but-does-not-improve-perceived-exertion-exercise-economy-or-aerobic-exercise-capacity-in-endurance-trained-runners
#12
Eric Rivas, John D Smith, Nestor W Sherman
PURPOSE: The objective of this study was to determine if leg compressions would alter cardiorespiratory and perceived exertion measures during rest, submaximal and maximal exercise in endurance-trained runners. METHOD: Thirteen young, endurance trained runners (10 males, 20.9±3y, 58.9±5.7mlkgmin(-1)) completed a randomized design, leg compressions and non-compression control condition. The incremental graded exercise test consisted of baseline rest and submaximal intensities at 23%, 70%, 75%, 85% and then a progressive increase to 100% VO2max...
December 21, 2016: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28012220/heart-rate-variability-analysis-during-immediate-recovery-from-exercise-in-overweight-obese-healthy-young-adult-females
#13
Sahar M El Agaty, Azra Kirmani, Ezaz Labban
BACKGROUND: Data on heart rate variability (HRV) changes during immediate recovery period after exercise in overweight/obese healthy young adult females are still inconclusive. The aim of this study was to evaluate the heart rate variability (HRV), heart rate recovery (HRR), and arterial blood pressure immediately after cessation of exercise in overweight/obese healthy young adult females. METHODS: This study was carried out in the laboratory of the Physiology Department, Faculty of Medicine, King Abdulaziz University...
December 24, 2016: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28010813/changes-in-systolic-arterial-pressure-variability-are-associated-with-the-decreased-aerobic-performance-of-rats-subjected-to-physical-exercise-in-the-heat
#14
Flávia C Müller-Ribeiro, Samuel P Wanner, Weslley H M Santos, Milene R Malheiros-Lima, Ivana A T Fonseca, Cândido C Coimbra, Washington Pires
Enhanced cardiovascular strain is one of the factors that explains degraded aerobic capacity in hot environments. The cardiovascular system is regulated by the autonomic nervous system, whose activity can be indirectly evaluated by analyzing heart rate variability (HRV) and systolic arterial pressure (SAP) variability. However, no study has addressed whether HRV or SAP variability can predict aerobic performance during a single bout of exercise. Therefore, this study aimed to investigate whether there is an association between cardiovascular variability and performance in rats subjected to treadmill running at two ambient temperatures...
January 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/27993169/the-incidence-of-training-responsiveness-to-cardiorespiratory-fitness-and-cardiometabolic-measurements-following-individualized-and-standardized-exercise-prescription-study-protocol-for-a-randomized-controlled-trial
#15
Ryan M Weatherwax, Nigel K Harris, Andrew E Kilding, Lance C Dalleck
BACKGROUND: There is individual variability to cardiorespiratory fitness (CRF) training, but the underlying cause is not well understood. Traditionally, a standardized approach to exercise prescription has utilized relative percentages of maximal heart rate, heart rate reserve (HRR), maximal oxygen uptake (VO2max), or VO2 reserve to establish exercise intensity. However, this model fails to take into consideration individual metabolic responses to exercise and may attribute to the variability in training responses...
December 19, 2016: Trials
https://www.readbyqxmd.com/read/27990221/polycystic-ovary-syndrome-presents-higher-sympathetic-cardiac-autonomic-modulation-that-is-not-altered-by-strength-training
#16
Victor B Ribeiro, Gislaine S Kogure, Rosana M Reis, Ada C Gastaldi, João E DE Araújo, José H Mazon, Audrey Borghi, Hugo C D Souza
Polycystic ovary syndrome (PCOS) may present important comorbidities, such as cardiovascular and metabolic diseases, which are often preceded by changes in cardiac autonomic modulation. Different types of physical exercises are frequently indicated for the prevention and treatment of PCOS. However, little is known about the effects of strength training on the metabolic, hormonal, and cardiac autonomic parameters. Therefore, our aim was to investigate the effects of strength training on the autonomic modulation of heart rate variability (HRV) and its relation to endocrine-metabolic parameters in women with PCOS...
2016: International Journal of Exercise Science
https://www.readbyqxmd.com/read/27982347/reference-values-for-the-six-minute-walk-test-in-healthy-children-and-adolescents-a-systematic-review
#17
Lucas de Assis Pereira Cacau, Valter Joviniano de Santana-Filho, Luana G Maynard, Mansueto Gomes, Marcelo Fernandes, Vitor Oliveira Carvalho
Objective: The aim of the study is to compare the available reference values and the six-minute walk test equations in healthy children/adolescents. Our systematic review was planned and performed in accordance with the PRISMA guidelines. We included all studies that established reference values for the six-minute walk test in healthy children/adolescents. Methods: To perform this review, a research was performed in PubMed, EMBASE (via SCOPUS) and Cochrane (LILACS), Bibliographic Index Spanish in Health Sciences, Organization Collection Pan-American Health Organization, Publications of the World Health Organization and Scientific Electronic Library Online (SciELO) via Virtual Health Library until June 2015 without language restriction...
September 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27981748/acute-effects-of-water-immersion-on-heart-rate-variability-in-participants-with-heart-disease
#18
Andrée Dionne, Mario Leone, Serge Goulet, David E Andrich, Louis Pérusse, Alain-Steve Comtois
BACKGROUND: Water immersion and aquatic exercise can be an important therapeutic tool in patients suffering from heart disease (HD). However, the effects of water immersion on heart rate variability (HRV) in HD participants remain unknown. METHODS: Twenty-eight volunteers in sinus rhythm within the same age range took part in this study: 18 HD and ten healthy controls (HC). Heart rhythm was collected with a heart rate monitor (sampling rate 1000 Hz) for periods of 10 min at rest in the supine position on land, standing on land (STL) and standing in water (STW) to the xiphoid process...
December 16, 2016: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/27979503/effect-of-physical-training-on-the-recovery-of-acute-exercise-among-patients-with-cardiovascular-disease
#19
Marianna García-Saldivia, Hermes Ilarraza-Lomelí, Jonathan Myers, Jorge Lara, Leopoldo Bueno
INTRODUCTION: Physical training programs (PTP) have shown several beneficial effects for patients with cardiovascular disease (CVD), particularly by increasing survival and quality of life. Physiological response during the effort and recovery phases of an exercise testing, is one of the strongest prognostic markers among patients with CVD. A reasonable mechanism that explains those training effects on survival is through the adaptations seen on heart rate recovery (HRR) and oxygen uptake kinetics at the post-exertional phase (RVO2)...
December 12, 2016: Archivos de Cardiología de México
https://www.readbyqxmd.com/read/27959935/a-45-second-self-test-for-cardiorespiratory-fitness-heart-rate-based-estimation-in-healthy-individuals
#20
Francesco Sartor, Matteo Bonato, Gabriele Papini, Andrea Bosio, Rahil A Mohammed, Alberto G Bonomi, Jonathan P Moore, Giampiero Merati, Antonio La Torre, Hans-Peter Kubis
Cardio-respiratory fitness (CRF) is a widespread essential indicator in Sports Science as well as in Sports Medicine. This study aimed to develop and validate a prediction model for CRF based on a 45 second self-test, which can be conducted anywhere. Criterion validity, test re-test study was set up to accomplish our objectives. Data from 81 healthy volunteers (age: 29 ± 8 years, BMI: 24.0 ± 2.9), 18 of whom females, were used to validate this test against gold standard. Nineteen volunteers repeated this test twice in order to evaluate its repeatability...
2016: PloS One
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