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hormonal and exercise

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https://www.readbyqxmd.com/read/29346164/the-nuclear-receptor-nor-1-is-a-pleiotropic-regulator-of-exercise-induced-adaptations
#1
Michael A Pearen, George E O Muscat
Exercise induces various physical and metabolic changes in skeletal muscle that adaptively reprograms this tissue to current physiological and environmental demands. Underlying these changes are broad modifications to gene expression. We postulate that the nuclear hormone receptor, Nor-1, is activated following exercise and this transcription factor modifies gene expression to drive the molecular and cellular adaptations associated with contractile reorganization.
January 15, 2018: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/29341814/utilizing-a-rat-delayed-implantation-model-to-teach-integrative-endocrinology-and-reproductive-biology
#2
Rodney D Geisert, Michael F Smith, Amanda L Schmelzle, Jonathan A Green
In this teaching laboratory, the students are directed in an exercise that involves designing and performing an experiment to determine estrogen's role in regulating delayed implantation (diapause) in female rats. To encourage active participation by the students, a discussion question is provided before the laboratory exercise in which each student is asked to search the literature and provide written answers to questions and to formulate an experiment to test the role of ovarian estrogen in inducing implantation in female rats...
March 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29337384/dual-hormone-artificial-pancreas-benefits-and-limitations-compared-with-single-hormone-systems
#3
Tricia M Peters, Ahmad Haidar
Technological advances have made the artificial pancreas a reality. This has the potential to improve the lives of individuals with Type 1 diabetes by reducing the risk of hypoglycaemia, achieving better overall glucose control, and enhancing quality of life. Both single-hormone (insulin-only) and dual-hormone (insulin and glucagon) systems have been developed; however, a focused review of the relative benefits of each artificial pancreas system is needed. We reviewed studies that directly compared single- and dual-hormone systems to evaluate the efficacy of each system for preventing hypoglycaemia and maintaining glycaemic control, as well as their utility in specific situations including during exercise, overnight and during the prandial period...
January 16, 2018: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/29324576/intermittent-cooling-during-judo-training-in-a-warm-humid-environment-reduces-autonomic-and-hormonal-impact
#4
Eduardo Carballeira, José Morales, David H Fukuda, María L Granada, Vicente Carratalá-Deval, Alfonso López Díaz de Durana, Jeffrey R Stout
The purpose of this study was to identify the effects of superficial cooling on physiological responses while training in a warm, humid environment during an international judo training camp. Sixteen judokas (8 women and 8 men) participated in the experiment. Four high-level women and four men were randomly assigned to wear a cooling vest (vest group, VG) during the recovery periods within a training session (i.e. 8 bouts of 5 min fighting with 5 min rest) and up to 10 min after the session, while the remaining athletes in the control group (CG) trained without the use of any cooling aids...
January 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29324562/effectiveness-of-interventions-to-prevent-pre-frailty-and-frailty-progression-in-older-adults-a-systematic-review
#5
João Apóstolo, Richard Cooke, Elzbieta Bobrowicz-Campos, Silvina Santana, Maura Marcucci, Antonio Cano, Miriam Vollenbroek-Hutten, Federico Germini, Barbara D'Avanzo, Holly Gwyther, Carol Holland
OBJECTIVE: To summarize the best available evidence regarding the effectiveness of interventions for preventing frailty progression in older adults. INTRODUCTION: Frailty is an age-related state of decreased physiological reserves characterized by an increased risk of poor clinical outcomes. Evidence supporting the malleability of frailty, its prevention and treatment, has been presented. INCLUSION CRITERIA: The review considered studies on older adults aged 65 and over, explicitly identified as pre-frail or frail, who had been undergoing interventions focusing on the prevention of frailty progression...
January 2018: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29321394/-chrono-nutrition-and-n-3-polyunsaturated-fatty-acid
#6
Shigenobu Shibata, Akiko Furutani
Circadian clock system has been widely maintained in many spices from prokaryote to mammals. "Circadian" means "approximately day" in Latin, thus circadian rhythm means about 24 hour rhythms. The earth revolves once every 24 hours, and our circadian system has been developed for adjusting to this 24 hour cycles, to get sun light information for getting their foods or for alive in birds or mammals. We have two different circadian systems so-called main oscillator located in the suprachiasmatic nucleus (SCN) of the hypothalamus, and local oscillator located in the various peripheral organ tissues such as liver, kidney and skeletal muscle...
2018: Nihon Yakurigaku Zasshi. Folia Pharmacologica Japonica
https://www.readbyqxmd.com/read/29303601/the-effect-of-adrenalectomy-on-exercise-response-of-the-renin-angiotensin-aldosterone-system-and-exercise-tolerance-in-primary-aldosteronism
#7
V Tuka, M Matoulek, J Rosa, O Petrák, O Mikeš, Z Krátká, B Štrauch, R Holaj, T Zelinka, J Widimský
Primary aldosteronism (PA) is associated with objectively measured lower physical fitness and blunted response of the renin-angiotensin-aldosterone system to exercise. The purpose of this pilot study was to objectively measure exercise response of the renin-angiotensin-aldosterone system and cardiopulmonary fitness changes after laparoscopic adrenalectomy (ADE) in patients with unilateral PA. We examined a total of 14 patients with confirmed PA before and after ADE, by means of spiroergometry and hormonal evaluation...
January 5, 2018: Physiological Research
https://www.readbyqxmd.com/read/29280410/iron-balance-and-iron-supplementation-for-the-female-athlete-a-practical-approach
#8
Charles R Pedlar, Carlo Brugnara, Georgie Bruinvels, Richard Burden
Maintaining a positive iron balance is essential for female athletes to avoid the effects of iron deficiency and anaemia and to maintain or improve performance. A major function of iron is in the production of the oxygen and carbon dioxide carrying molecule, haemoglobin, via erythropoiesis. Iron balance is under the control of a number of factors including the peptide hormone hepcidin, dietary iron intake and absorption, environmental stressors (e.g. altitude), exercise, menstrual blood loss and genetics. Menstruating females, particularly those with heavy menstrual bleeding are at an elevated risk of iron deficiency...
December 27, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29277444/entrainment-of-the-mouse-circadian-clock-effects-of-stress-exercise-and-nutrition
#9
REVIEW
Yu Tahara, Shigenobu Shibata
The circadian clock system in mammals plays a fundamental role in maintaining homeostasis. Entrainment is an important characteristic of the internal clock, by which appropriate timing is maintained according to external daily stimuli, such as light, stress, exercise, and/or food. Disorganized entrainment or a misaligned clock time, such as jet lag, increases health disturbances. The central clock in the suprachiasmatic nuclei, located in the hypothalamus, receives information about arousal stimuli, such as physical stress or exercise, and changes the clock time by modifying neural activity or the expression of circadian clock genes...
December 22, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29275887/subclinical-hypothyroidism-is-associated-with-adverse-prognosis-in-heart-failure-patients
#10
Yu Sato, Akiomi Yoshihisa, Yusuke Kimishima, Takatoyo Kiko, Shunsuke Watanabe, Yuki Kanno, Satoshi Abe, Makiko Miyata, Takamasa Sato, Satoshi Suzuki, Masayoshi Oikawa, Atsushi Kobayashi, Takayoshi Yamaki, Hiroyuki Kunii, Kazuhiko Nakazato, Takafumi Ishida, Yasuchika Takeishi
BACKGROUND: It is widely recognized that overt hyper- as well as hypothyroidism are potential causes of heart failure (HF). Additionally it has been recently reported that subclinical hypothyroidism (sub-hypo) is associated with atherosclerosis, development of HF, and cardiovascular death. We aimed to clarify the effect of sub-hypo on prognosis of HF, and underlying hemodynamics and exercise capacity. METHODS: We measured the serum levels of thyroid stimulating hormone (TSH) and free thyroxine (FT4) in 1100 consecutive HF patients...
January 2018: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/29273887/post-myocardial-infarction-exercise-training-beneficially-regulates-thyroid-hormone-receptor-isoforms
#11
Xiaohua Xu, Wenhan Wan, Michael A Garza, John Q Zhang
Thyroid hormone receptors (TRs) play a critical role in the expression of genes that are major determinants of myocardial contractility, including α-myosin heavy chain (α-MHC) and β-MHC. After myocardial infarction (MI), changes in myocardial TRs consistently correlate with changes in thyroid hormone (TH) target gene transcription, and this is thought to play a key role in the progression to end-stage heart failure. Interestingly, post-MI exercise training has been shown to beneficially alter TH-target gene transcription and preserve cardiac function without changing serum TH...
December 22, 2017: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/29262409/early-markers-of-cardiovascular-risk-in-autosomal-dominant-polycystic-kidney-disease
#12
Silvia Lai, Daniela Mastroluca, Silvia Matino, Valeria Panebianco, Antonio Vitarelli, Lidia Capotosto, Irene Turinese, Paolo Marinelli, Marco Rossetti, Alessandro Galani, Pia Baiocchi, Anna R D'Angelo, Paolo Palange
BACKGROUND/AIMS: Cardiovascular disease is the most frequent cause of morbidity and mortality in autosomal dominant polycystic kidney disease (ADPKD) patients, often before the onset of renal failure, and the pathogenetic mechanism is not yet well elucidated. The aim of the study was to identify early and noninvasive markers of cardiovascular risk in young ADPKD patients, in the early stages of disease. METHODS: A total of 26 patients with ADPKD and 24 control group, matched for age and sex, were enrolled, and we have assessed inflammatory indexes, mineral metabolism, metabolic state and markers of atherosclerosis and endothelial dysfunction (carotid intima media thickness (IMT), ankle brachial index (ABI), flow mediated dilation (FMD), renal resistive index (RRI), left ventricular mass index (LVMI)) and cardiopulmonary exercise testing (CPET), maximal O2 uptake (V'O2max), and O2 uptake at lactic acid threshold (V'O2@LT)...
December 15, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29258382/efficacy-of-a-home-based-exercise-program-after-thyroidectomy-for-thyroid-cancer-patients
#13
Kyung Hee Kim, Mee Ock Gu, Junghwa Jung, Jong Ryeal Hahm, Soo Kyoung Kim, Jin Hyun Kim, Seung Hoon Woo
BACKGROUND: The objective of this study was to determine the effect of a home-based exercise program on fatigue, anxiety, quality of life, and immune function of thyroid cancer patients taking thyroid hormone replacement after thyroidectomy. METHOD: This quasi-experimental study with a non-equivalent control group included 43 outpatients taking thyroid hormone replacement after thyroidectomy (22 in experimental group and 21 in control group). After education about the home-based exercise program, subjects in the experimental group underwent 12 weeks of aerobic, resistance, and flexibility exercise...
December 19, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29250678/mass-effect-a-plethora-of-symptoms-caused-by-an-otherwise-benign-transitional-pituitary-meningioma-case-report
#14
Elisabeta Bădilă, Alexandra Emma Weiss, Daniela Bartoş, Elena Lăcrămioara Dumitrache, Ligia Gabriela Tătăranu, Gheorghe Vasile Ciubotaru, Tiberiu Paul Neagu, Valentin Enache, Valeriu Bogdan Popa, Cristina Japie
Meningiomas are among the most commonly encountered tumors of the central nervous system, being more frequent in females. We present the case of a dyslipidemic male patient, previously diagnosed with coronary artery disease for which he previously underwent percutaneous coronary intervention with the placement of two bare metal stents on the left anterior descending artery. He was presented to the emergency department for atypical angina and a seven-day history of dizziness when switching from clino- to orthostatism, reduced visual acuity, diplopia and vomiting...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29249684/thyroid-hormones-lipid-profile-and-anthropometric-changes-after-programmed-weight-loss-in-palestinian-obese-adult-females
#15
Saleh Mwafy, Maged Yassin, Raed Mousa
OBJECTIVE: we aimed to investigate the changes in thyroid hormones, lipid profile and anthropometric measures after programmed weight loss in Palestinian obese adult females MATERIALS AND METHODS: This prospective study included 94 obese female (20-50 years old) as cases and 94 Non-obese of same age as controls for baseline comparisons. Obese female were assigned for low calorie diet (1200-1500 Kcal/day) in addition to a daily program of therapeutic exercise for six month. Parameters were measured, statistically analyzed and compared with control before and after study...
December 14, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/29244956/effects-of-carbohydrate-and-branched-chain-amino-acid-beverage-ingestion-during-acute-upper-body-resistance-exercise-on-performance-and-post-exercise-hormone-response
#16
JohnEric W Smith, Ben M Krings, Brandon D Shepherd, Hunter S Waldman, Steven A Basham, Matthew J McAllister
The purpose of this investigation was to examine the individual and combined effects of ingesting carbohydrates (CHO) and branched chain amino acids (BCAA) during high volume upper-body resistance exercise (RE) on markers of catabolism and performance. Thirteen resistance trained males completed four experimental trials with supplementation ingesting beverages containing CHO, BCAA, CHO+BCAA, or placebo (PLA) in a randomized, double-blind design. The beverages were ingested in 118 mL servings six times during a ~60 min RE session consisting of bench press, bent-over row, incline press, and close-grip row...
December 15, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29240652/interindividual-responses-of-appetite-to-acute-exercise-a-replicated-crossover-study
#17
Fernanda R Goltz, Alice E Thackray, James A King, James L Dorling, Greg Atkinson, David J Stensel
PURPOSE: Acute exercise transiently suppresses appetite, which coincides with alterations in appetite-regulatory hormone concentrations. Individual variability in these responses is suspected, but replicated trials are needed to quantify them robustly. We examined the reproducibility of appetite and appetite-regulatory hormone responses to acute exercise and quantified the individual differences in responses. METHODS: Fifteen healthy, recreationally-active men completed two control (60-min resting) and two exercise (60-min fasted treadmill running at 70% peak oxygen uptake) conditions in randomised sequences...
December 13, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29238429/the-effect-of-ongoing-vitamin-d-and-low-fat-milk-intake-on-bone-metabolism-in-female-high-school-endurance-runners
#18
Aoi Ikedo, Takuma Arimitsu, Toshiyuki Kurihara, Kumiko Ebi, Satoshi Fujita
Background: Vitamin D and calcium are essential nutrients for bone health. In addition, vitamin D suppresses inflammatory cytokines and increases bone resorption. Therefore, improvements in bone health by calcium and vitamin D supplementation have the potential to not only improve calcium metabolism but also suppress inflammation associated with exercise training. The purpose of this study was to determine whether ongoing vitamin D supplementation and low-fat milk intake by female high-school endurance runners would improve bone metabolism by suppressing inflammatory cytokines and the parathyroid hormone (PTH)...
January 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29238247/effects-of-hypoxic-training-versus-normoxic-training-on-exercise-performance-in-competitive-swimmers
#19
Hun-Young Park, Kiwon Lim
In swimming competition, optimal swimming performance is characterized by a variety of interchangeable components, such as aerobic exercise capacity, anaerobic power and muscular function. Various hypoxic training methods would potentiate greater performance improvements compared to similar training at sea-level. Therefore, this study aimed to evaluate the effects of six-weeks of hypoxic training on exercise performance in moderately trained competitive swimmers. Twenty swimmers were equally divided into a normoxic training group (n = 10) for residing and training at sea-level (PIO2 = 149...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29238244/influence-of-a-thermogenic-dietary-supplement-on-safety-markers-body-composition-energy-expenditure-muscular-performance-and-hormone-concentrations-a-randomized-placebo-controlled-double-blind-trial
#20
Grant M Tinsley, Stacie Urbina, Jacy Mullins, Jordan Outlaw, Sara Hayward, Matt Stone, Cliffa Foster, Colin Wilborn, Lem Taylor
Dietary supplementation is commonly employed by individuals seeking to improve body composition and exercise performance. The purpose of the present study was to examine the safety and effectiveness of a commercially available dietary supplement designed to promote thermogenesis and fat loss. In a randomized double-blind trial, participants were assigned to consume placebo or a multi-ingredient supplement containing caffeine, green tea extract, l-carnitine, evodiamine and other ingredients that purportedly enhance thermogenesis...
December 2017: Journal of Sports Science & Medicine
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