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https://www.readbyqxmd.com/read/28935829/contribution-of-structural-brain-phenotypes-to-the-variance-in-resting-energy-expenditure-in-healthy-caucasian-subjects
#1
Corinna Geisler, Mark Hübers, Oliver Granert, Manfred James Muller
BACKGROUND: Brain gray (GM) and white matter (WM) volumes are related to weight changes. The impact of structural variations in GM and WM on the variance in resting energy expenditure (REE) and the REE on fat free mass (FFM) association is unknown. The aim of this study was to address this in healthy Caucasian subjects. METHODS: Cross-sectional data analysis of 493 healthy Caucasian subjects (age range 6 to 80 years; three age groups) with comprehensive information on FFM, organ and tissue masses and detailed brain composition as assessed by whole body magnetic resonance imaging (MRI) and REE (assessed by indirect calorimetry)...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28935350/long-term-outcomes-after-extracardiac-fontan-takedown-to-an-intermediate-palliative-circulation
#2
Matteo Trezzi, Enrico Cetrano, Salvatore Giannico, Fiore S Iorio, Sonia B Albanese, Adriano Carotti
BACKGROUND: Acute failure of the Fontan circulation is rare but remains associated with high morbidity and mortality rates. Little is known about the long-term outcome of patients who underwent Fontan takedown to an intermediate palliative circulation and their potential candidacy for redo Fontan completion. METHODS: Patients followed up at a single institution who underwent takedown of a Fontan circulation to an intermediate palliative circulation within 2 months of extracardiac Fontan completion were reviewed...
September 18, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28934961/area-asymmetry-of-heart-rate-variability-signal
#3
Chang Yan, Peng Li, Lizhen Ji, Lianke Yao, Chandan Karmakar, Changchun Liu
BACKGROUND: Heart rate fluctuates beat-by-beat asymmetrically which is known as heart rate asymmetry (HRA). It is challenging to assess HRA robustly based on short-term heartbeat interval series. METHOD: An area index (AI) was developed that combines the distance and phase angle information of points in the Poincaré plot. To test its performance, the AI was used to classify subjects with: (i) arrhythmia, and (ii) congestive heart failure, from the corresponding healthy controls...
September 21, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28934945/aqua-walking-as-an-alternative-exercise-modality-during-cardiac-rehabilitation-for-coronary-artery-disease-in-older-patients-with-lower-extremity-osteoarthritis
#4
Jong-Young Lee, Kee-Chan Joo, Peter H Brubaker
BACKGROUND: The purpose of this study was to examine the effects of aqua walking (AW) on coronary artery disease (CAD) and cardiorespiratory fitness in older adults with osteoarthritis in the lower extremity and compare it with that of traditional over-ground walking. METHODS: Sixty consecutive eligible patients who had undergone percutaneous coronary intervention for CAD with limited ambulation due to lower extremity osteoarthritis were recruited. They were randomly assigned to the AW program group, treadmill/track walking (TW) program group, or non-exercise control group (CON)...
September 21, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28934782/the-dose-dependent-effects-of-ketoprofen-on-dynamic-pain-after-open-heart-surgery
#5
Vedat Eljezi, Claire Biboulet, Henri Boby, Pierre Schoeffler, Bruno Pereira, Christian Duale
BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAIDs) can reduce postoperative pain, in both static (i.e., at rest) and dynamic contexts (e.g., during coughing or mobilization), and reduced doses could improve their efficacy/tolerance balance. OBJECTIVES: To test this hypothesis of efficacy after open heart surgery, in which NSAIDs are poorly used, particularly for safety concerns. STUDY DESIGN: Randomized, double-blind trial. SETTING: Single-center, French university hospital...
September 2017: Pain Physician
https://www.readbyqxmd.com/read/28933710/elite-youth-soccer-players-physiological-responses-time-motion-characteristics-and-game-performance-in-4-vs-4-small-sided-games-the-influence-of-coach-feedback
#6
Mirko Brandes, Sebastian Elvers
Brandes, M and Elvers, S. Elite youth soccer players' physiological responses, time-motion characteristics, and game performance in 4 vs. 4 small-sided games: the influence of coach feedback. J Strength Cond Res 31(10): 2652-2658, 2017-The purpose of this study was to determine the impact of mild vs. strongly pushed coach feedback on the physiological response, ratio of perceived exertion (RPE), and time-motion characteristics in soccer training with small-sided games (SSGs). Sixteen elite youth soccer players (aged 17...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28932907/effects-of-self-paced-interval-and-continuous-training-on-health-markers-in-women
#7
Luke J Connolly, Stephen J Bailey, Peter Krustrup, Jonathan Fulford, Chris Smietanka, Andrew M Jones
PURPOSE: To compare the effects of self-paced high-intensity interval and continuous cycle training on health markers in premenopausal women. METHODS: Forty-five inactive females were randomised to a high-intensity interval training (HIIT; n = 15), continuous training (CT; n = 15) or an inactive control (CON; n = 15) group. HIIT performed 5 × 5 min sets comprising repetitions of 30-s low-, 20-s moderate- and 10-s high-intensity cycling with 2 min rest between sets...
September 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28931527/sympathomimetic-effects-of-acute-e-cigarette-use-role-of-nicotine-and-non-nicotine-constituents
#8
Roya S Moheimani, May Bhetraratana, Kacey M Peters, Benjamin K Yang, Fen Yin, Jeffrey Gornbein, Jesus A Araujo, Holly R Middlekauff
BACKGROUND: Chronic electronic (e) cigarette users have increased resting cardiac sympathetic nerve activity and increased susceptibility to oxidative stress. The purpose of the present study is to determine the role of nicotine versus non-nicotine constituents in e-cigarette emissions in causing these pathologies in otherwise healthy humans. METHODS AND RESULTS: Thirty-three healthy volunteers who were not current e-cigarette or tobacco cigarette smokers were studied...
September 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28931132/oxygen-saturation-increases-over-the-course-of-the-night-in-mountaineers-at-high-altitude-3050-6354-m
#9
Markus Tannheimer, Rianne van der Spek, Florian Brenner, Raimund Lechner, Jürgen M Steinacker, Gunnar Treff
Background: Blood oxygen saturation (SpO 2 ) is frequently measured to determine acclimatization status in high-altitude travellers. However, little is known about nocturnal time course of SpO 2 (SpO 2N ), but alterations in SpO 2N might be practically relevant as well. To this end, we describe the time-course of SpO 2N in mountaineers at high altitude. Methods: SpO 2N was continuously measured in ten male mountaineers during a three-week expedition in Peru (3,050-6,354m)...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28930627/fitness-body-composition-and-vascular-health-in-adolescent-and-young-adult-survivors-of-paediatric-brain-cancer-and-cranial-radiotherapy
#10
Treya M Long, Shoshana R Rath, Tessa D Maroni, Karen E Wallman, Helen C Atkinson, Nicholas G Gottardo, Catherine H Cole, Catherine S Choong, Louise H Naylor
Background Survivors of paediatric brain cancer and/or cranial radiotherapy (CRT) are at an increased risk of developing serious comorbidities. Established risk factors for chronic disease include central obesity, endothelial abnormalities and diminished fitness. Objectives Here we characterised anthropometry, body composition, bone mineral density (BMD), heart rate (HR), blood pressure (BP), endothelial function, muscular strength and endurance and aerobic fitness in adolescent and young adult (AYA) survivors...
September 20, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28929941/long-term-predictors-of-stroke-in-healthy-middle-aged-men
#11
Erik Prestgaard, Christian Hodnesdal, Kristian Engeseth, Jan Erikssen, Johan Bodegård, Knut Liestøl, Knut Gjesdal, Sverre E Kjeldsen, Irene Grundvold, Eivind Berge
Background There are few data on risk factors for stroke during long-term follow-up of healthy individuals. Aims We aimed to investigate the long-term predictive impact on stroke risk of baseline variables including hemodynamic variables measured at rest and during exercise in middle-aged, healthy men. Methods We performed a prospective cohort study of 2014 healthy Norwegian men aged 40-59 years, recruited during the period 1972-1975 and followed until 2007. Participants underwent a comprehensive clinical assessment at baseline, including a bicycle exercise test...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28928974/the-influence-of-water-temperature-on-sockeye-salmon-heart-rate-recovery-following-simulated-fisheries-interactions
#12
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/28926794/depression-recognition-according-to-heart-rate-variability-using-bayesian-networks
#13
Danni Kuang, Rongqian Yang, Xiuwen Chen, Guohui Lao, Fengchun Wu, Xiong Huang, Ruixue Lv, Lei Zhang, Chuanxu Song, Shanxing Ou
BACKGROUND: Doctors mainly use scale tests and subjective judgment in the clinical diagnosis of depression. Researches have demonstrated that depression is associated with the dysfunction of the autonomic nervous system (ANS), where its modulation can be evaluated by heart rate variability (HRV). Depression patients have lower HRV than healthy subjects. Therefore, HRV may be used to distinguish depression patients from healthy people. METHODS: HRV signals were collected from 76 female subjects composed of 38 depression patients and 38 healthy people...
September 11, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28923751/effects-of-mindfulness-training-on-emotional-and-physiologic-recovery-from-induced-negative-affect
#14
Alexandra D Crosswell, Patricia I Moreno, Elizabeth B Raposa, Sarosh J Motivala, Annette L Stanton, Patricia A Ganz, Julienne E Bower
OBJECTIVE: Mindfulness training has been shown to improve psychological well-being and physical health. One proposed pathway for the positive effects of mindfulness training is through the development of new emotion regulation strategies, such as the ability to experience emotions by observing and accepting them without judgment. Theoretically, this should facilitate recovery from negative emotional states; however, this has rarely been examined empirically. The goal of the current study was to determine whether mindfulness training is associated with more efficient emotional and cardiovascular recovery from induced negative affect...
August 4, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28922935/stereotype-threat-trait-perseveration-and-vagal-activity-evidence-for-mechanisms-underpinning-health-disparities-in%C3%A2-black-americans
#15
DeWayne P Williams, Nicholas Joseph, LaBarron K Hill, John J Sollers, Michael W Vasey, Baldwin M Way, Julian Koenig, Julian F Thayer
OBJECTIVE: Black Americans (BAs) are at an elevated risk for morbidity and mortality in comparison to White Americans (WAs). Racial stressors are a common occurrence in American culture and is theorized to contribute to these disparities. When race-focused, stereotype threat (ST) is considered to be a factor that is detrimental to health in BAs; however few studies have directly investigated the impact of a ST manipulation on physiological function. Furthermore, it is proposed that racial stressors such as ST may have prolonged effects when more likely to perseverate (e...
September 19, 2017: Ethnicity & Health
https://www.readbyqxmd.com/read/28921743/exercise-training-dose-differentially-alters-muscle-and-heart-capillary-density-and-metabolic-functions-in-an-obese-rat-with-metabolic-syndrome
#16
Marcus Vinicius Machado, Aline Bomfim Vieira, Fabiana Gomes da Conceição, Alessandro Rodrigues Nascimento, Antonio Claudio Lucas da Nóbrega, Eduardo Tibirica
We evaluated the effect of frequency, duration and intensity of exercise training on metabolic parameters and structural capillary density in obese rats with metabolic syndrome (MS). Wistar-Kyoto rats were fed a either standard commercial diet (CON) or high-fat diet (HFD). Animals that received the HFD were randomly separated into either a sedentary (SED) group or 8 different exercise groups that varied by the frequency, duration and intensity of training. After 12 weeks of aerobic exercise training, body composition, aerobic capacity, hemodynamic variables, metabolic parameters and capillary density in the heart and skeletal muscle were evaluated...
September 17, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28921674/decline-in-effort-capacity-with-age-echocardiographic-stress-analysis-in-the-elderly
#17
Anat Milman, Gad Keren, Yan Topilsky
BACKGROUND: The present study was designed to assess the underlying mechanism of decline in effort capacity seen with aging. METHODS: We analyzed 250 healthy senior patients (≥65 years) with an ejection fraction ≥60% who underwent a stress echocardiogram test. The seniors (aged 65-94) were divided into 3 equal age groups (groups 1, 2, and 3), and their echo characteristics at rest and peak exercise (measured and calculated) were compared. RESULTS: Diastolic function at rest declined significantly (E lateral, E septal, E/E', A) with age, while other rest parameters were similar...
September 17, 2017: Echocardiography
https://www.readbyqxmd.com/read/28921167/brain-structural-concomitants-of-resting-state-heart-rate-variability-in-the-young-and-old-evidence-from-two-independent-samples
#18
Hyun Joo Yoo, Julian F Thayer, Steven Greening, Tae-Ho Lee, Allison Ponzio, Jungwon Min, Michiko Sakaki, Lin Nga, Mara Mather, Julian Koenig
Previous research has shown associations between brain structure and resting state high-frequency heart rate variability (HF HRV). Age affects both brain structure and HF HRV. Therefore, we sought to examine the relationship between brain structure and HF HRV as a function of age. Data from two independent studies were used for the present analysis. Study 1 included 19 older adults (10 males, age range 62-78 years) and 19 younger adults (12 males, age range 19-37). Study 2 included 23 older adults (12 males; age range 55-75) and 27 younger adults (17 males; age range 18-34)...
September 18, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28916637/effect-of-increases-in-cardiac-contractility-on-cerebral-blood-flow-in-humans
#19
Shigehiko Ogoh, Gilbert Moralez, Takuro Washio, Satyam Sarma, Michinari Hieda, Steven A Romero, Matthew N Cramer, Manabu Shibasaki, Craig G Crandall
The effect of acute increases in cardiac contractility on cerebral blood flow (CBF) remains unknown. We hypothesized that the external carotid artery (ECA) downstream vasculature modifies the direct influence of acute increases in heart rate and cardiac function on CBF regulation. Twelve healthy subjects received two infusions of dobutamine (first a low dose; 5 μg/kg/min and then a high dose; 15 μg/kg/min) for 12 min each. Cardiac output, blood flow through the internal carotid artery (ICA) and ECA and echocardiographic measurements were performed during dobutamine infusions...
September 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28912840/the-relationship-between-insulin-sensitivity-and-heart-rate-corrected-qt-interval-in-patients-with-type-2-diabetes
#20
Xiao-Hua Yang, Jian-Bin Su, Xiu-Lin Zhang, Li-Hua Zhao, Feng Xu, Xue-Qin Wang, Xing-Bo Cheng
BACKGROUND: Reduced insulin sensitivity not only contributes to the pathogenesis of type 2 diabetes but is also linked to multiple metabolic risk factors and cardiovascular diseases (CVD). A prolonged heart rate-corrected QT interval (QTc interval) is related to ventricular arrhythmias and CVD mortality and exhibits a high prevalence among type 2 diabetes patients. The aim of the study was to investigate the relationship between insulin sensitivity and the QTc interval in patients with type 2 diabetes...
2017: Diabetology & Metabolic Syndrome
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