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https://www.readbyqxmd.com/read/28928974/the-influence-of-water-temperature-on-sockeye-salmon-heart-rate-recovery-following-simulated-fisheries-interactions
#1
Tanya S Prystay, Erika J Eliason, Michael J Lawrence, Melissa Dick, Jacob W Brownscombe, David A Patterson, Glenn T Crossin, Scott G Hinch, Steven J Cooke
Selective harvest policies have been implemented in North America to enhance the conservation of Pacific salmon (Oncorhynchus spp.) stocks, which has led to an increase in the capture and release of fish by all fishing sectors. Despite the immediate survival benefits, catch-and-release results in capture stress, particularly at high water temperatures, and this can result in delayed post-release mortality minutes to days later. The objective of this study was to evaluate how different water temperatures influenced heart rate disturbance and recovery of wild sockeye salmon (Oncorhynchus nerka) following fisheries interactions (i...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28917232/compressed-food-with-added-functional-oligopeptides-improves-performance-during-military-endurance-training
#2
Zhi-Qiang Zheng, Zhan-Hui Geng, Jia-Xi Liu, Shun-Tang Guo
BACKGROUND AND OBJECTIVES: Oligosaccharide or oligopeptide supplementation may have a significant impact on endurance performance. This study evaluated the effects of adding maltooligosaccharides (MO) or soy oligopeptides (SO) to compressed food (CF) on the physical response of soldiers to daily military training. METHODS AND STUDY DESIGN: Twelve soldiers were randomized to four diet groups: regular meals, CF, CFMO, and CFSO (crossover design). They participated in exercise tests including 90 minutes running at 55-65% VO2max and exhaustive running...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28888482/exercise-training-and-cardiac-autonomic-function-in-type-2-diabetes-mellitus-a-systematic-review
#3
REVIEW
Pooja Bhati, Shweta Shenoy, M Ejaz Hussain
Cardiac autonomic neuropathy (CAN) is a common complication of type 2 diabetes mellitus (T2DM). It has been found to independently predict all cause and cardiovascular disease (CVD) mortality. It remains unclear whether exercise training could improve autonomic control in T2DM patients. The purpose of this study was to systematically review the effects of exercise training on cardiac autonomic function in T2DM patients. Electronic databases (MEDLINE, CENTRAL, PEDro, Scopus and Web of science) were systematically searched to retrieve relevant evidence...
September 6, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28885093/heart-rate-recovery-time-in-metabolically-healthy-and-metabolically-unhealthy-obese-children
#4
Ljiljana Bjelakovic, Vladimir Vukovic, Marko Jovic, Sanja Bankovic, Tomislav Kostic, Dragan Radovanovic, Sasa Pantelic, Mladen Zivkovic, Sanja Stojanovic, Bojko Bjelakovic
BACKGROUND: Autonomic dysfunction is an emerging non-traditional cardiovascular risk factor that correlates with obesity, components of metabolic syndrome, as well as cardiorespiratory fitness. As a simple and validated index of autonomic balance, heart rate recovery (HRR) has been reported as a useful biomarker for predicting cardiovascular morbidity and mortality. OBJECTIVES: The aim of this study was to compare HRR in metabolically healthy vs. metabolically unhealthy obese children...
September 8, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28840546/obstructive-sleep-apnea-does-not-impair-cardiorespiratory-responses-to-progressive-exercise-performed-until-exhaustion-in-hypertensive-elderly
#5
Bruno Teixeira Barbosa, Amilton da Cruz Santos, Murillo Frazão, Tulio Rocha Petrucci, Gabriel Grizzo Cucato, Adriana Oliveira Sarmento, Eduardo D S Freitas, Anna Myrna Jaguaribe de Lima, Maria do Socorro Brasileiro-Santos
BACKGROUND: Elderly people have a high prevalence to systemic arterial hypertension (SAH) and obstructive sleep apnea (OSA). Both comorbidities are closely associated and inflict damage on cardiorespiratory capacity. METHODS: In order to assess cardiorespiratory responses to the cardiopulmonary exercise test (CPET) among hypertensive elderly with OSA, we enrolled 28 subjects into two different groups: without OSA (No-OSA: apnea/hypopnea index (AHI) < 5 events/h; n = 15) and with OSA (OSA: AHI ≥ 15 events/h; n = 13)...
August 24, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28821962/influence-of-aerobic-fitness-on-vasoreactivity-in-young-men
#6
Preston L Bell, Edward T Kelley, Stephanie M McCoy, Daniel P Credeur
Previous work has demonstrated a direct relationship between aerobic fitness and vasodilatory function (i.e., flow-mediated dilation; FMD); however, the relation between aerobic fitness and vasoconstrictor responsiveness (i.e., low flow-mediated constriction; L-FMC), and the overall vasoactive range (FMD + L-FMC) is unclear. PURPOSE: To test the hypothesis that L-FMC and the overall vasoactive range (FMD + L-FMC) will be related to aerobic fitness in young, healthy men. METHODS: Twenty men (age: 23 ± 5 years) were recruited, and divided evenly into a higher (HF) vs...
August 18, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28814664/pulmonary-arterial-hypertension-treatment-with-carvedilol-for-heart-failure-a-randomized-controlled-trial
#7
Samar Farha, Didem Saygin, Margaret M Park, Hoi I Cheong, Kewal Asosingh, Suzy Aa Comhair, Olivia R Stephens, Emir C Roach, Jacqueline Sharp, Kristin B Highland, Frank P DiFilippo, Donald R Neumann, W H Wilson Tang, Serpil C Erzurum
BACKGROUND: Right-sided heart failure is the leading cause of death in pulmonary arterial hypertension (PAH). Similar to left heart failure, sympathetic overactivation and β-adrenoreceptor (βAR) abnormalities are found in PAH. Based on successful therapy of left heart failure with β-blockade, the safety and benefits of the nonselective β-blocker/vasodilator carvedilol were evaluated in PAH. METHODS: PAH Treatment with Carvedilol for Heart Failure (PAHTCH) is a single-center, double-blind, randomized, controlled trial...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28814168/deterioration-of-heart-rate-recovery-index-in-patients-after-carotid-artery-stenting
#8
Emrah Aytac, Murat Gonen, Orhan Dogdu, Mehmet Balin
Objective Although carotid artery stenting (CAS) is an effective treatment for severe carotid stenosis, it has been associated with alterations in autonomic functions long term after the procedure. Patients with CAS have been reported to have autonomic nervous system (ANS) dysfunction. This study aimed to evaluate heart rate recovery (HRR) indices and exercise test parameters after CAS. Methods Patients (10 male, 11 female) suitable for CAS, without a history of hypertension, diabetes mellitus, severe coronary artery or valvular heart disease, were enrolled in our study...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28807718/autonomic-regulation-of-systemic-inflammation-in-humans-a-multi-center-blinded-observational-cohort-study
#9
Gareth L Ackland, Gary Minto, Martin Clark, John Whittle, Robert C M Stephens, Thomas Owen, Pradeep Prabhu, Ana Gutierrez Del Arroyo
OBJECTIVE: Experimental animal models demonstrate that autonomic activity regulates systemic inflammation. By contrast, human studies are limited in number and exclusively use heart rate variability (HRV) as an index of cardiac autonomic regulation. HRV measures are primarily dependent on, and need to be corrected for, heart rate. Thus, independent autonomic measures are required to confirm HRV-based findings. Here, the authors sought to replicate the findings of preceding HRV-based studies by using HRV-independent, exercise-evoked sympathetic and parasympathetic measures of cardiac autonomic regulation to examine the relationship between autonomic function and systemic inflammation...
August 12, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28803675/the-yale-fitness-intervention-trial-in-female-cancer-survivors-cardiovascular-and-physiological-outcomes
#10
M Tish Knobf, Sangchoon Jeon, Barbara Smith, Lyndsay Harris, Siobhan Thompson, Mitchel R Stacy, Karl Insogna, Albert J Sinusas
BACKGROUND: Induced premature menopause and cardio-toxic therapy increase cardiovascular disease risk in female cancer survivors. OBJECTIVE: To compare the effects of a 12 month aerobic-resistance fitness center intervention to home based physical activity on cardiovascular function and metabolic risk factors. METHODS: Subjects (N = 154) who had completed primary and/or adjuvant chemotherapy (past 3 years) were randomized to a fitness center intervention or a home based group...
August 10, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28798697/cardiac-autonomic-modulation-and-the-kinetics-of-heart-rate-responses-in-the-on-and-off-transient-during-exercise-in-women-with-metabolic-syndrome
#11
Lucas R B E Silva, Antonio R Zamunér, Paulo Gentil, Fagner M Alves, Acácia G F Leal, Viviane Soares, Maria S Silva, Marcus F Vieira, Karina Simões, Gustavo R Pedrino, Ana C S Rebelo
Objective: To test whether women with metabolic syndrome (MS) have impairments in the on- and off-transients during an incremental test and to study whether any of the MS components are independently associated with the observed responses. Research Design and Methods: Thirty-six women aged 35-55 years were divided into a group with MS (MSG, n = 19) and a control group (CG, n = 17). R-R intervals (RRi) and heart rate variability (HRV) were calculated on a beat-to-beat basis and the heart rate (HR) at the on- and off-transient were analyzed during an incremental cardiopulmonary exercise test (CPET)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28795483/heart-rate-recovery-improves-after-exercise-in-water-when-compared-with-on-land
#12
Alain Boussuges, Pascal Rossi, Laurent Poirette, Olivier Gavarry
BACKGROUND: Water immersion has demonstrated its effectiveness in the recovery process after exercise. This study presents for the first time the impact of water immersion on heart rate recovery after low-intensity cycle exercise. METHODS: Sixteen male volunteers were involved in the study. The experiment consisted of two cycling exercises: 1 h in ambient air and 1 h in water (temperature: 32 ± 0·2°C). The exercise intensity was individually prescribed to elicit around 35%-40% of VO2 peak for both conditions...
August 10, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28752607/reproducibility-of-heart-rate-recovery-in-patients-with-intermittent-claudication
#13
Rafael Yokoyama Fecchio, Marcel Chehuen, Tiago Peçanha, Gabriel Grizzo Cucato, Luiz Augusto Riani Costa, Anthony Scott Leicht, Raphael Mendes Ritti-Dias, Nelson Wolosker, Cláudia Lúcia de Moraes Forjaz
BACKGROUND: Postexercise heart rate recovery (HRR) is a non-invasive tool for cardiac autonomic function assessment. Reproducibility of HRR has been established in healthy subjects; however, no study has evaluated this reproducibility in clinical populations who may present autonomic dysfunction. Patients with peripheral artery disease and intermittent claudication (IC) often present altered cardiac autonomic function and HRR could be an interesting tool for evaluating autonomic responses to interventions in this population...
July 28, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28704885/submaximal-markers-of-fatigue-and-overreaching-implications-for-monitoring-athletes
#14
André Siegl, Elisa M Kösel, Nicholas Tam, Susanne Koschnick, Nelleke G Langerak, Sabrina Skorski, Tim Meyer, Robert P Lamberts
The regular monitoring of athletes is important to fine-tune training and detect early symptoms of overreaching. Therefore the aim of this study was to determine if a noninvasive submaximal running test could reflect a state of overreaching. 14 trained runners completed a noninvasive Lamberts Submaximal Running Test, one week before and 2 days after finishing an ultramarathon, and delayed onset of muscle soreness and the daily analysis of life demands for athletes questionnaire were also captured. After the ultramarathon, submaximal heart rate was lower at 70% (-3 beats) and 85% of peak treadmill running speed (P<0...
September 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28699532/modulation-of-heart-rate-by-acute-or-chronic-aerobic-exercise-potential-effects-on-blood-pressure-control
#15
Carme Perez-Quilis, J Derek Kingsley, Kabir Malkani, Gianfranco Cervellin, Giuseppe Lippi, Fabian Sanchis-Gomar
It was initially assumed that heart rate and arterial blood pressure were modulated by normal respiration and muscle contraction. The arterial baroreflex, an inverse relationship between blood pressure and heart rate, was later reported. Nonetheless, it was then assumed that those responses involved vagal modulation. We summarize available evidence on the modulation of heart rate by acute or chronic aerobic exercise as well as its potential implications on BP control. Numerous studies have tried to clarify whether aerobic exercise modifies neurally-mediated vasoconstriction, but they report contradictory results...
July 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28677944/heart-rate-response-and-recovery-in-wheelchair-tetraplegic-rugby-athletes-a-pilot-study
#16
Michelle C Coutinho, Patrícia S Vigário, Agnaldo J Lopes, Fernando S Guimarães
BACKGROUND: Subjects with spinal cord injuries (SCI) have impaired autonomic cardiac regulation and increased risk of cardiovascular disease. In face of the insufficient research data on the autonomic control of physically active subjects with SCI, this study aimed at describing the chronotropic response, as well as the heart rate recovery behaviour of a cohort of elite wheelchair rugby athletes. METHODS: This is a cross-sectional study including a convenience sample of 17 elite wheelchair rugby athletes with tetraplegia...
July 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28666992/oxygen-uptake-efficiency-slope-predicts-poor-outcome-in-patients-with-idiopathic-pulmonary-arterial-hypertension
#17
Yi Tang, Qin Luo, Zhihong Liu, Xiuping Ma, Zhihui Zhao, Zhiwei Huang, Liu Gao, Qi Jin, Changming Xiong, Xinhai Ni
BACKGROUND: Few published studies have evaluated the power of the oxygen uptake efficiency slope (OUES) to predict outcomes in patients with idiopathic pulmonary arterial hypertension (IPAH), who typically die of right-sided heart failure. Our study sought to evaluate the power of OUES to predict clinical worsening and mortality in patients with IPAH. METHODS AND RESULTS: Patients with newly diagnosed IPAH who underwent symptom-limited cardiopulmonary exercise testing from November 11, 2010, to June 25, 2015, in our hospital were prospectively enrolled and followed for up to 66 months...
June 30, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28650277/attenuated-post-exercise-heart-rate-recovery-in-patients-with-systemic-lupus-erythematosus-the-role-of-disease-severity-and-beta-blocker-treatment
#18
P Bienias, M Ciurzyński, A Chrzanowska, I Dudzik-Niewiadomska, K Irzyk, K Oleszek, A Kalińska-Bienias, B Kisiel, W Tłustochowicz, P Pruszczyk
Objective Sinus tachycardia is frequently reported in systemic lupus erythematosus (SLE), while there are limited data on post-exercise ability to slow heart rate (i.e. heart rate recovery, HRR) in this group of patients. Methods We studied consecutive 70 patients with SLE and 30 healthy controls. All examined individuals underwent detailed clinical examination, echocardiography, Holter monitoring with heart rate variability and treadmill stress test using Bruce's protocol. HRR values were calculated as the difference between maximum HR during exercise and HR at the first (HRR1) and third (HRR3) minute of rest...
January 1, 2017: Lupus
https://www.readbyqxmd.com/read/28649720/in-season-changes-in-heart-rate-recovery-are-inversely-related-to-time-to-exhaustion-but-not-aerobic-capacity-in-rowers
#19
Kristin Haraldsdottir, Stacey Brickson, Jennifer Sanfilippo, Warren Dunn, Andrew Watson
PURPOSE: Determine if in-season changes in heart rate recovery (HRR) are related to aerobic fitness and performance in collegiate rowers. METHODS: 22 female collegiate rowers completed testing before and after their competitive season. Body fat percentage (BF%) was determined by dual-energy x-ray absorptiometry. Maximal aerobic capacity (VO2max ) and time to exhaustion (Tmax ) were determined during maximal rowing ergometer testing followed by 1 minute of recovery...
June 26, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28648356/effects-of-high-intensity-interval-versus-continuous-exercise-training-on-post-exercise-heart-rate-recovery-in-coronary-heart-disease-patients
#20
Koldobika Villelabeitia-Jaureguizar, Davinia Vicente-Campos, Alejandro Berenguel Senen, Verónica Hernández Jiménez, María Elvira Barrios Garrido-Lestache, Jose López Chicharro
BACKGROUND: Heart rate recovery (HRR) has been considered a prognostic and mortality indicator in both healthy and coronary patients. Physical exercise prescription has shown improvements in VO2peak and HRR, but most of the studies have been carried out applying continuous training at a moderate intensity, being very limited the use of protocols of high intensity interval training in coronary patients. We aimed to compare the effects of a moderate continuous training (MCT) versus a high intensity interval training (HIIT) programme on VO2peak and HRR...
June 17, 2017: International Journal of Cardiology
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