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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
#1
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/28919842/international-society-of-sports-nutrition-position-stand-nutrient-timing
#2
REVIEW
Chad M Kerksick, Shawn Arent, Brad J Schoenfeld, Jeffrey R Stout, Bill Campbell, Colin D Wilborn, Lem Taylor, Doug Kalman, Abbie E Smith-Ryan, Richard B Kreider, Darryn Willoughby, Paul J Arciero, Trisha A VanDusseldorp, Michael J Ormsbee, Robert Wildman, Mike Greenwood, Tim N Ziegenfuss, Alan A Aragon, Jose Antonio
The International Society of Sports Nutrition (ISSN) provides an objective and critical review regarding the timing of macronutrients in reference to healthy, exercising adults and in particular highly trained individuals on exercise performance and body composition. The following points summarize the position of the ISSN:Nutrient timing incorporates the use of methodical planning and eating of whole foods, fortified foods and dietary supplements. The timing of energy intake and the ratio of certain ingested macronutrients may enhance recovery and tissue repair, augment muscle protein synthesis (MPS), and improve mood states following high-volume or intense exercise...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28918456/testing-a-mobile-mindful-eating-intervention-targeting-craving-related-eating-feasibility-and-proof-of-concept
#3
Ashley E Mason, Kinnari Jhaveri, Michael Cohn, Judson A Brewer
Theoretically driven smartphone-delivered behavioral interventions that target mechanisms underlying eating behavior are lacking. In this study, we administered a 28-day self-paced smartphone-delivered intervention rooted in an operant conditioning theoretical framework that targets craving-related eating using mindful eating practices. At pre-intervention and 1-month post-intervention, we assessed food cravings among adult overweight or obese women (N = 104; M age = 46.2 ± 14.1 years; M BMI = 31...
September 16, 2017: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28916931/physical-exercise-prescription-in-metabolic-chronic-disease
#4
Laura Stefani, Giorgio Galanti
Metabolic syndrome as a consequence of the association to overweight, hypertension, and diabetes is at high risk of coronary events. Regular physical training has been recently promoted to reduce cardiovascular risks factors, by the improved lifestyle and also by the "anti-inflammatory effectiveness." A positive impact has been shown in case of cancer survived patients either with or without comorbidities and especially in those subjects where the inflammatory process is globally represented. The American College of Sports Medicine (ACSM) guidelines and more recently a new Italian model both support the role of "exercise as therapy" at moderate level of energy expenditure...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28916822/ampk-phosphorylation-of-ulk1-is-required-for-targeting-of-mitochondria-to-lysosomes-in-exercise-induced-mitophagy
#5
Rhianna C Laker, Joshua C Drake, Rebecca J Wilson, Vitor A Lira, Bevan M Lewellen, Karen A Ryall, Carleigh C Fisher, Mei Zhang, Jeffrey J Saucerman, Laurie J Goodyear, Mondira Kundu, Zhen Yan
Mitochondrial health is critical for skeletal muscle function and is improved by exercise training through both mitochondrial biogenesis and removal of damaged/dysfunctional mitochondria via mitophagy. The mechanisms underlying exercise-induced mitophagy have not been fully elucidated. Here, we show that acute treadmill running in mice causes mitochondrial oxidative stress at 3-12 h and mitophagy at 6 h post-exercise in skeletal muscle. These changes were monitored using a novel fluorescent reporter gene, pMitoTimer, that allows assessment of mitochondrial oxidative stress and mitophagy in vivo, and were preceded by increased phosphorylation of AMP activated protein kinase (Ampk) at tyrosine 172 and of unc-51 like autophagy activating kinase 1 (Ulk1) at serine 555...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28916538/analysis-of-blood-based-gene-expression-in-idiopathic-parkinson-disease
#6
Ron Shamir, Christine Klein, David Amar, Eva-Juliane Vollstedt, Michael Bonin, Marija Usenovic, Yvette C Wong, Ales Maver, Sven Poths, Hershel Safer, Jean-Christophe Corvol, Suzanne Lesage, Ofer Lavi, Günther Deuschl, Gregor Kuhlenbaeumer, Heike Pawlack, Igor Ulitsky, Meike Kasten, Olaf Riess, Alexis Brice, Borut Peterlin, Dimitri Krainc
OBJECTIVE: To examine whether gene expression analysis of a large-scale Parkinson disease (PD) patient cohort produces a robust blood-based PD gene signature compared to previous studies that have used relatively small cohorts (≤220 samples). METHODS: Whole-blood gene expression profiles were collected from a total of 523 individuals. After preprocessing, the data contained 486 gene profiles (n = 205 PD, n = 233 controls, n = 48 other neurodegenerative diseases) that were partitioned into training, validation, and independent test cohorts to identify and validate a gene signature...
September 15, 2017: Neurology
https://www.readbyqxmd.com/read/28915863/lifestyle-intervention-to-improve-quality-of-life-and-prevent-weight-gain-after-renal-transplantation-design-of-the-active-care-after-transplantation-act-randomized-controlled-trial
#7
Gerald Klaassen, Dorien M Zelle, Gerjan J Navis, Desie Dijkema, Frederike J Bemelman, Stephan J L Bakker, Eva Corpeleijn
BACKGROUND: Low physical activity and reduced physical functioning are common after renal transplantation, resulting in a reduced quality of life. Another common post-transplantation complication is poor cardio-metabolic health, which plays a main role in long-term outcomes in renal transplant recipients (RTR). It is increasingly recognized that weight gain in the first year after transplantation, especially an increase in fat mass, is a highly common contributor to cardio-metabolic risk...
September 15, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28912655/chronic-eccentric-exercise-and-antioxidant-supplementation-effects-on-lipid-profile-and-insulin-sensitivity
#8
Christina Yfanti, Athanasios Tsiokanos, Ioannis G Fatouros, Anastasios A Theodorou, Chariklia K Deli, Yiannis Koutedakis, Athanasios Z Jamurtas
Eccentric exercise has been shown to exert beneficial effects in both lipid profile and insulin sensitivity. Antioxidant supplementation during chronic exercise is controversial as it may prevent the physiological training-induced adaptations. The aim of this study was to investigate: 1) the minimum duration of the eccentric exercise training required before changes on metabolic parameters are observed and 2) whether antioxidant supplementation during training would interfere with these adaptations. Sixteen young healthy men were randomized into the Vit group (1 g of vitamin C and 400 IU vitamin E daily) and the placebo (PL) group...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28911834/how-swimming-affects-plasma-insulin-and-glucose-concentration-in-thoroughbreds-a-pilot-study
#9
F Bonelli, M Sgorbini, V Meucci, C Sighieri, P Baragli
Low intensity exercise increases insulin-stimulated glucose uptake in skeletal muscle and decreases its plasma concentration. In this study, plasma insulin and glucose concentrations were evaluated 5min before and 5, 15, 25, 35, 45 and 60min after an IV bolus of glucose in 12 Thoroughbreds before and after 1 month of submaximal aquatraining exercise, monitored using heart rate and blood lactate. Plasma glucose concentrations were evaluated using a colorimetric enzymatic method, and plasma insulin concentrations with a solid-phase radioimmunoassay method...
August 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28906407/gelatinases-and-physical-exercise-a-systematic-review-of-evidence-from-human-studies
#10
Rosalia Lo Presti, Eugenia Hopps, Gregorio Caimi
BACKGROUND: Matrix metalloproteinases (MMPs), particularly gelatinase A (MMP-2) and gelatinase B (MMP-9), as well as their tissue inhibitors (TIMP-1 and TIMP-2), are involved in the development of skeletal muscle tissue, in the repair process after muscle injury and in the adaptive modifications induced by physical exercise in skeletal muscle. This paper aims at reviewing results from human studies that investigated the role of gelatinases and their inhibitors in skeletal muscle response to acute physical exercise or training...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28903011/inter-individual-responses-to-sprint-interval-training-a-pilot-study-investigating-interactions-with-the-sirtuin-system
#11
Stuart R Gray, Tom P Aird, Andrew J Farquharson, Graham W Horgan, Emily Fisher, John Wilson, Gareth E Hopkins, Bradley Anderson, Syed A Ahmad, Stuart R Davis, Janice E Drew
Sprint intensity interval training (SIT) is reported to improve blood glucose control and may be a useful public health tool. The sirtuins and associated genes are emerging as key players in blood glucose control. This study investigated the interplay between the sirtuin/NAD system and individual variation in insulin sensitivity responses after SIT in young healthy individuals. Before and after 4 weeks of SIT body mass and fat percentage were measured and oral glucose tolerance tests (OGTT) performed in 20 young healthy participants (7 females)...
September 13, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28902126/work-rate-during-self-paced-exercise-is-not-mediated-by-the-rate-of-heat-storage
#12
Brian J Friesen, Julien D Périard, Martin P Poirier, Martin Lauzon, Denis P Blondin, Francois Haman, Glen P Kenny
PURPOSE: To date, there have been mixed findings on whether greater anticipatory reductions in self-paced exercise intensity in the heat are mediated by early differences in rate of body heat storage. The disparity may be due to an inability to accurately measure minute-to-minute changes in whole-body heat loss. Thus, we evaluated whether early differences in rate of heat storage can mediate exercise intensity during self-paced cycling at a fixed rate of perceived exertion (RPE of 16; hard-to-very-hard work effort) in COOL (15°C), NORMAL (25°C) and HOT (35°C) ambient conditions...
September 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28899914/military-training-elicits-marked-increases-in-plasma-metabolomic-signatures-of-energy-metabolism-lipolysis-fatty-acid-oxidation-and-ketogenesis
#13
J Philip Karl, Lee M Margolis, Nancy E Murphy, Christopher T Carrigan, John W Castellani, Elisabeth H Madslien, Hilde-Kristin Teien, Svein Martini, Scott J Montain, Stefan M Pasiakos
Military training studies provide unique insight into metabolic responses to extreme physiologic stress induced by multiple stressor environments, and the impacts of nutrition in mediating these responses. Advances in metabolomics have provided new approaches for extending current understanding of factors modulating dynamic metabolic responses in these environments. In this study, whole-body metabolic responses to strenuous military training were explored in relation to energy balance and macronutrient intake by performing nontargeted global metabolite profiling on plasma collected from 25 male soldiers before and after completing a 4-day, 51-km cross-country ski march that produced high total daily energy expenditures (25...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28899903/socs3-expression-in-sf1-cells-regulates-adrenal-differentiation-and-exercise-performance
#14
João Ab Pedroso, Pedro Omori Ribeiro de Mendonça, Marco As Fortes, Igor Tomaz, Vitor L Pecorali, Thais B Auricino, Ismael C Costa, Leandro B Lima, Isadora C Furigo, Debora N Bueno, Angela M Ramos-Lobo, Claudimara Ferini Pacicco Lotfi, Jose Donato
Many hormones/cytokines are secreted in response to exercise and cytokine signaling may play a pivotal role in the training adaptations. To investigate the importance of cytokine signaling during vertical ladder climbing, a resistance exercise model, we produced mice lacking SOCS3 protein exclusively in steroidogenic factor-1 (SF1) cells (SF1 Socs3 KO mice). SF1 expression is found in steroidogenic cells of the adrenal cortex and gonads, as well as in neurons of the ventromedial nucleus of the hypothalamus...
September 12, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28899618/smell-and-taste-in-the-preterm-infant
#15
Frank H Bloomfield, Tanith Alexander, Mariana Muelbert, Friederike Beker
Olfaction and gustation are critical for the enjoyment of food but also have important metabolic roles, initiating the cephalic phase response that sets in train secretion of hormones important for metabolism and digestion before any food is actually ingested. Smell and taste receptors are functional in the fetus and there is evidence for antenatal learning of odours. Despite enteral nutrition and metabolism being major issues in the care of very preterm infants, often little consideration is given to the potential role of smell and taste in supporting these processes, or in the role they may have in encoding hypothalamic circuitry in a way that promotes healthy metabolism in the post‑neonatal period...
September 9, 2017: Early Human Development
https://www.readbyqxmd.com/read/28887652/disruption-of-adenylyl-cyclase-type-5-mimics-exercise-training
#16
John J Guers, Jie Zhang, Sara C Campbell, Marko Oydanich, Dorothy E Vatner, Stephen F Vatner
Exercise training is key to healthful longevity. Since exercise training compliance is difficult, it would be useful to have a therapeutic substitute that mimicked exercise training. We compared the effects of exercise training in wild-type (WT) littermates with adenylyl cyclase type 5 knock out (AC5 KO) mice, a model of enhanced exercise performance. Exercise performance, measured by maximal distance and work to exhaustion, was increased in exercise-trained WT to levels already attained in untrained AC5 KO...
September 8, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28887154/comparing-the-effects-of-two-distinct-eccentric-modalities-to-traditional-resistance-training-in-resistance-trained-higher-functioning-older-adults
#17
Ashley Gluchowski, Deborah Dulson, Fabrice Merien, Lindsay Plank, Nigel Harris
BACKGROUND: The effects of eccentric resistance exercise are of interest in the older adult cohort, but to our knowledge, there is no research on the relative effects of different eccentric modalities on a range of outcomes in higher functioning, resistance trained older adults. METHODS: 33 resistance-trained older adults (aged 67±4.5years) were randomized into one of three supervised training groups: traditional (TRE), eccentric only (ERE) or eccentrically biased resistance exercise (EBRE) on a 45°, plate-loaded leg press machine...
September 5, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28883044/beneficial-effects-of-exercise-training-in-heart-failure-are-lost-in-male-diabetic-rats
#18
Dalila Boudia, Valérie Domergue, Phlippe Mateo, Loubina Fazal, Mathilde Prud'homme, Heloise Prigent, Claude Delcayre, Alain Cohen-Solal, Anne Garnier, Renee Ventura-Clapier, Jane-Lise Samuel
Exercise training has been demonstrated to have beneficial effects in patients with heart failure (HF) or diabetes. However, it is unknown whether diabetic patients with HF will benefit from exercise training. Male Wistar rats were fed either a standard (Sham, n= 53) or high-fat, high-sucrose (HFHS) diet (D, n=66) for 6 months. After 2 months of diet, the rats were already diabetic. Rats were then randomly subjected to either myocardial infarction by coronary artery ligation (MI) or sham operation (Sham). Two months later, heart failure was documented by echocardiography and animals were randomly subjected to exercise training with treadmill for eight additional weeks or remained sedentary...
September 7, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28882061/feasibility-of-a-home-based-exercise-intervention-with-remote-guidance-for-patients-with-stable-grade-ii-and-iii-gliomas-a-pilot-randomized-controlled-trial
#19
Karin Gehring, Corelien Jj Kloek, Neil K Aaronson, Kasper W Janssen, Lee W Jones, Margriet M Sitskoorn, Martijn M Stuiver
OBJECTIVE: In this pilot study, we investigated the feasibility of a home-based, remotely guided exercise intervention for patients with gliomas. DESIGN: Pilot randomized controlled trial (RCT) with randomization (2:1) to exercise or control group. SUBJECTS: Patients with stable grade II and III gliomas. INTERVENTION: The six-month intervention included three home-based exercise sessions per week at 60%-85% of maximum heart rate...
September 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28878950/exercise-dose-and-all-cause-mortality-within-extended-cardiac-rehabilitation-a-cohort-study
#20
Claire Taylor, Costas Tsakirides, James Moxon, James W Moxon, Michael Dudfield, Klaus Witte, Lee Ingle, Sean Carroll
AIMS: To investigate the relationship between exercise participation, exercise 'dose' expressed as metabolic equivalent (MET) hours (h) per week, and prognosis in individuals attending an extended, community-based exercise rehabilitation programme. METHODS: Cohort study of 435 participants undertaking exercise-based cardiac rehabilitation (CR) in Leeds, West Yorkshire, UK between 1994 and 2006, followed up to 1 November 2013. MET intensity of supervised exercise was estimated utilising serial submaximal exercise test results and corresponding exercise prescriptions...
2017: Open Heart
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