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physiology of exercise

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https://www.readbyqxmd.com/read/28918494/betaine-in-the-brain-characterization-of-betaine-uptake-its-influence-on-other-osmolytes-and-its-potential-role-in-neuroprotection-from-osmotic-stress
#1
Leena S Knight, Quinn Piibe, Ian Lambie, Christopher Perkins, Paul H Yancey
Betaine (N-trimethylglycine), a common osmolyte, has received attention because of the number of clinical reports associating betaine supplementation with improved cognition, neuroprotection and exercise physiology. However, tissue analyses report little accumulation of betaine in brain tissue despite the presence of betaine/GABA transporters (BGT1) at the blood brain barrier and in nervous tissue, calling into question whether betaine influences neuronal function directly or indirectly. Therefore, the focus of this study was to determine what capacity nervous tissue has to accumulate betaine, specifically in the hippocampus, a region of the brain associated with learning and memory and one that is particularly susceptible to damage (e...
September 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28918314/empirical-research-evaluating-the-effects-of-non-traditional-approaches-to-enhancing-sleep-in-typical-and-clinical-children-and%C3%A2-young-people
#2
REVIEW
Karyn G France, Laurie K McLay, Jolene E Hunter, Madeline L S France
This paper examines the effects of non-traditional (non-behavioural and non-prescription pharmaceutical) approaches to sleep in children and young people (0-18 y). A systematic search identified 79 studies that met inclusion criteria. Seventeen percent of the studies were rated as having a conclusive level of evidence, forty-two percent with preponderant evidence and forty-one percent with only suggestive evidence. There were promising indications, with certain populations only, for aromatherapy, ketogenic diets, an elimination diet (few foods diet), elimination of cow's milk, avoidance of caffeine, tryptophan with adenosine and uridine, omega-3 and omega-6, valerian, music, osteopathic manipulation and white noise...
July 29, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/28915945/potentiometric-sensor-for-non-invasive-lactate-determination-in-human-sweat
#3
Massimo Onor, Stefano Gufoni, Tommaso Lomonaco, Silvia Ghimenti, Pietro Salvo, Fiodor Sorrentino, Emilia Bramanti
The present work describes a non invasive lactate sensing in sweat during workout. The sensing system is based on a non-equilibrium potentiometric measure performed using disposable, chemically modified, screen printed carbon electrodes (SPCEs) that can be wetted with sweat during the exercise. The potentiometric signal, which is proportional to lactate concentration in sweat, is produced by a redox reaction activated by UV radiation, as opposed to the enzymatic reaction employed in traditional, blood-based measuring devices...
October 9, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28914815/a-systematic-review-family-support-integrated-with-diabetes-self-management-among-uncontrolled-type-ii-diabetes-mellitus-patients
#4
REVIEW
Rian Adi Pamungkas, Kanittha Chamroonsawasdi, Paranee Vatanasomboon
The rate of type-2 diabetes mellitus (T2D) is dramatically increasing worldwide. Continuing diabetes mellitus (DM) care needs effective self-management education and support for both patients and family members. This study aimed to review and describe the impacts of diabetes mellitus self-management education (DSME) that involve family members on patient outcomes related to patient health behaviors and perceived self-efficacy on self-management such as medication adherence, blood glucose monitoring, diet and exercise changes, health outcomes including psychological well-being and self-efficacy, and physiological markers including body mass index, level of blood pressure, cholesterol level and glycemic control...
September 15, 2017: Behavioral Sciences
https://www.readbyqxmd.com/read/28913725/exercise-and-competitive-sport-physiology-adaptations-and-uncertain-long-term-risks
#5
REVIEW
Patrick T Gleason, Jonathan H Kim
The benefits of regular and moderate exercise training on cardiovascular outcomes have been well established. In addition, strenuous exercise training leads to corollary cardiac structural and functional adaptations that are sport-specific and facilitate athletic performance. In this review, the normal physiologic and hemodynamic changes that occur during exercise and the subsequent differential exercise-induced cardiac remodeling patterns that develop will be discussed. Paradoxically, recent data have raised concern about the long-term impact of higher doses of physical activity and exercise on mortality and cardiovascular health outcomes...
September 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28912742/perception-action-and-cognition-of-football-referees-in-extreme-temperatures-impact-on-decision-performance
#6
Nadia Gaoua, Rita F de Oliveira, Steve Hunter
Different professional domains require high levels of physical performance alongside fast and accurate decision-making. Construction workers, police officers, firefighters, elite sports men and women, the military and emergency medical professionals are often exposed to hostile environments with limited options for behavioral coping strategies. In this (mini) review we use football refereeing as an example to discuss the combined effect of intense physical activity and extreme temperatures on decision-making and suggest an explicative model...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28912655/chronic-eccentric-exercise-and-antioxidant-supplementation-effects-on-lipid-profile-and-insulin-sensitivity
#7
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/28906019/response-letter-to-optimising-physiology-for-adolescents-with-dysautonomia
#8
K Armstrong, A M De Souza, P Sneddon, J E Potts, V E Claydon, S Sanatani
We would like to thank Dr Thaxter Nesbeth (1) for her interest and insightful comments on our paper entitled, "Exercise and the multidisciplinary holistic approach to adolescent dysautonomia"(2). We agree that recurrent orthostatic intolerance is often best managed through lifestyle modification rather than pharmacologic intervention (at least as an initial step), and as such in the present study we evaluated the impact of our exercise programme incorporated in addition to our standard clinical multidisciplinary management approach...
September 14, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28905640/neurobiological-mechanisms-of-exercise-and-psychotherapy-in-depression-the-speed-study-rationale-design-and-methodological-issues
#9
Stephan Heinzel, Michael A Rapp, Thomas Fydrich, Andreas Ströhle, Christina Terán, Gunnar Kallies, Melanie Schwefel, Andreas Heissel
BACKGROUND/AIMS: Even though cognitive behavioral therapy has become a relatively effective treatment for major depressive disorder and cognitive behavioral therapy-related changes of dysfunctional neural activations were shown in recent studies, remission rates still remain at an insufficient level. Therefore, the implementation of effective augmentation strategies is needed. In recent meta-analyses, exercise therapy (especially endurance exercise) was reported to be an effective intervention in major depressive disorder...
September 1, 2017: Clinical Trials: Journal of the Society for Clinical Trials
https://www.readbyqxmd.com/read/28905240/different-training-programs-decrease-blood-pressure-during-submaximal-exercise
#10
Oscar Niño, Natalia Balagué, Daniel Aragonés, Juan Alamo, Guillermo Oviedo, Casimiro Javierre, Elisabet Guillamo, Maria C Delicado, Gines Viscor, Josep L Ventura
OBJECTIVE: Our purpose was to study the effects of aerobic, resistance, and mixed (aerobic and resistance) training programs on blood pressure, both at rest and during submaximal exercise in healthy people. METHODS: We randomized 39 physically active, healthy participants into aerobic, resistance, and mixed (aerobic and resistance) exercise groups, and a control group. The exercise groups trained for 60 min three times/week for 6 weeks, and a submaximal cycle ergometer test was performed before and after training, and 3 weeks after detraining...
September 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28903474/nitric-oxide-heat-shock-protein-axis-in-menopausal-hot-flushes-neglected-metabolic-issues-of-chronic-inflammatory-diseases-associated-with-deranged-heat-shock-response
#11
Antônio Azambuja Miragem, Paulo Ivo Homem de Bittencourt
BACKGROUND: Although some unequivocal underlying mechanisms of menopausal hot flushes have been demonstrated in animal models, the paucity of similar approaches in humans impedes further mechanistic outcomes. Human studies might show some as yet unexpected physiological mechanisms of metabolic adaptation that permeate the phase of decreased oestrogen levels in both symptomatic and asymptomatic women. This is particularly relevant because both the severity and time span of hot flushes are associated with increased risk of chronic inflammatory disease...
September 1, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28901173/cyclin-d2-is-a-critical-mediator-of-exercise-induced-cardiac-hypertrophy
#12
Stephen W Luckey, Chris D Haines, John P Konhilas, Elizabeth D Luczak, Antke Messmer-Kratzsch, Leslie A Leinwand
A number of signaling pathways underlying pathological cardiac hypertrophy have been identified. However, few studies have probed the functional significance of these signaling pathways in the context of exercise or physiological pathways. Exercise studies were performed on females from six different genetic mouse models that have been shown to exhibit alterations in pathological cardiac adaptation and hypertrophy. These include mice expressing constitutively active glycogen synthase kinase-3β (GSK-3βS9A), an inhibitor of CaMK II (AC3-I), both GSK-3βS9A and AC3-I (GSK-3βS9A/AC3-I), constitutively active Akt (myrAkt), mice deficient in MAPK/ERK kinase kinase-1 (MEKK1(-/-)), and mice deficient in cyclin D2 (cyclin D2(-/-))...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28900532/mitochondrial-function-and-mitophagy-in-the-elderly-effects-of-exercise
#13
REVIEW
Osvaldo C Moreira, Brisamar Estébanez, Susana Martínez-Florez, José A de Paz, María J Cuevas, Javier González-Gallego
Aging is a natural, multifactorial and multiorganic phenomenon wherein there are gradual physiological and pathological changes over time. Aging has been associated with a decrease of autophagy capacity and mitochondrial functions, such as biogenesis, dynamics, and mitophagy. These processes are essential for the maintenance of mitochondrial structural integrity and, therefore, for cell life, since mitochondrial dysfunction leads to an impairment of energy metabolism and increased production of reactive oxygen species, which consequently trigger mechanisms of cellular senescence and apoptotic cell death...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28899687/proteomic-profiling-of-sweat-exosome-suggests-its-involvement-in-skin-immunity
#14
Chang-Xian Wu, Zheng-Fei Liu
The healthy human skin sustains an effective immune defense mechanism, formed by a complex physical and chemical epidermal barrier that coordinates with different cellular components of the skin immune system. However, the mechanism how skin cells regulate local immune homeostasis in health and disease contexts is not well known. To investigate whether exosomes exist in sweat, sweat samples from healthy individuals were collected after aerobic exercise. Sweat exosome was isolated via differential ultracentrifugation, observed under transmission electron microscope, measured by dynamic light scattering and confirmed by immunoblot...
September 9, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28895922/the-effect-of-nutrition-therapy-and-exercise-on-cancer-related-fatigue-and-quality-of-life-in-men-with-prostate-cancer-a-systematic-review
#15
REVIEW
Brenton J Baguley, Kate A Bolam, Olivia R L Wright, Tina L Skinner
BACKGROUND: Improvements in diet and/or exercise are often advocated during prostate cancer treatment, yet the efficacy of, and optimal nutrition and exercise prescription for managing cancer-related fatigue and quality of life remains elusive. The aim of this study is to systematically review the effects of nutrition and/or exercise on cancer-related fatigue and/or quality of life. METHODS: A literature search was conducted in six electronic databases. The Delphi quality assessment list was used to evaluate the methodological quality of the literature...
September 12, 2017: Nutrients
https://www.readbyqxmd.com/read/28893206/efficacy-of-blood-flow-restriction-exercise-during-dialysis-for-end-stage-kidney-disease-patients-protocol-of-a-randomised-controlled-trial
#16
Matthew J Clarkson, Steve F Fraser, Paul N Bennett, Lawrence P McMahon, Catherine Brumby, Stuart A Warmington
BACKGROUND: Exercise during haemodialysis improves strength and physical function. However, both patients and clinicians are time poor, and current exercise recommendations add an excessive time burden making exercise a rare addition to standard care. Hypothetically, blood flow restriction exercise performed during haemodialysis can provide greater value for time spent exercising, reducing this time burden while producing similar or greater outcomes. This study will explore the efficacy of blood flow restriction exercise for enhancing strength and physical function among haemodialysis patients...
September 11, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28891419/effects-of-listening-to-holy-qur-an-recitation-and-physical-training-on-dialysis-efficacy-functional-capacity-and-psychosocial-outcomes-in-elderly-patients-undergoing-haemodialysis
#17
Bechir Frih, Wajdi Mkacher, Abir Bouzguenda, Hamdi Jaafar, Salem Ali ALkandari, Zohra Ben Salah, Bart Sas, Mohamed Hammami, Ameur Frih
The purpose of this study was to determine whether listening to Holy Qur'an recitation would augment the beneficial effects of physical exercise on physiological and psychological measures in elderly patients undergoing haemodialysis. Fifty-three male haemodialysis patients were randomly assigned to an intervention group (listening to Holy Qur'an recitation in combination with endurance-resistance training, n = 28) or a control group (endurance-resistance training only, n = 25). Functional capacity was assessed using the Timed Up and Go test (TUG) and the Six-Minute Walk Test (6MWT)...
December 2017: Libyan Journal of Medicine
https://www.readbyqxmd.com/read/28890521/effect-of-burdock-extract-on-physical-performance-and-physiological-fatigue-in-mice
#18
Wen-Chyuan Chen, Yi-Ju Hsu, Mon-Chien Lee, Hua Shuai Li, Chun-Sheng Ho, Chi-Chang Huang, Fu-An Chen
Burdock (BD) is a common vegetable with many pharmacological properties. However, few studies have examined the effect of BD on exercise performance and physical fatigue. We aimed to evaluate the potential beneficial effects of BD on fatigue and ergogenic functions following physical challenge in mice. METHODS: Male ICR mice were divided into four groups to receive either vehicle, or BD at 348.5, 697 or 1,742.5 mg/kg/day, by daily oral gavage for 4 weeks. Exercise performance and fatigue were evaluated from forelimb grip strength, exhaustive swimming time, and post-exercise levels of physical fatigue-related biomarkers serum lactate, ammonia, glucose, and creatine kinase (CK)...
September 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28887887/evaluating-the-essential-role-of-rons-in-vivo-in-exercised-human-muscle
#19
EDITORIAL
Enrique Jaimovich, Mariana Casas
An article by Margaritelis et al.,(1) (this issue) addresses an important issue in exercise physiology, as it is the actual role of reactive oxygen and nitrogen species (RONS) in exercise-induced adaptations in humans. The authors designed a procedure that allowed them to avoid the use of exogenous anti-oxidants and redox agents that will normally alter metabolism and have multiple undesired effects. We discuss here in the context of the necessary balance between the beneficial role of reactive oxygen and nitrogen species as intracellular signals for muscle adaptation and the deleterious effects of these species in oxidative stress...
September 9, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28887766/short-term-effects-of-passive-mobilization-on-the-sublingual-microcirculation-and-on-the-systemic-circulation-in-patients-with-septic-shock
#20
Tuanny Teixeira Pinheiro, Flávio Geraldo Rezende de Freitas, Karla Tuanny Fiorese Coimbra, Vanessa Marques Ferreira Mendez, Heloísa Baccaro Rossetti, Paulo Vinicius Talma, Antônio Tonete Bafi, Flávia Ribeiro Machado
BACKGROUND: Active mobilization is not possible in patients under deep sedation and unable to follow commands. In this scenario, passive therapy is an interesting alternative. However, in patients with septic shock, passive mobilization may have risks related to increased oxygen consumption. Our objective was to evaluate the impact of passive mobilization on sublingual microcirculation and systemic hemodynamics in patients with septic shock. METHODS: We included patients who were older than 18 years, who presented with septic shock, and who were under sedation and mechanical ventilation...
September 8, 2017: Annals of Intensive Care
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