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31 papers 25 to 100 followers Some dietary supplements to cope with Life
By Hugo Silva Pinto Sports medicine MD, neuromuscular pain and dysfunctions private practice
https://www.readbyqxmd.com/read/29019089/exercise-and-the-cortisol-awakening-response-a-systematic-review
#1
REVIEW
Travis Anderson, Laurie Wideman
BACKGROUND: The cortisol awakening response (CAR) has been used as a biomarker of stress response in a multitude of psychological investigations. While a myriad of biochemical responses have been proposed to monitor responses to exercise training, the use of CAR within the exercise and sports sciences is currently limited and is a potentially underutilized variable. Therefore, the purpose of this review was to collate studies that incorporate both exercise and CAR, in an effort to better understand (a) whether CAR is a useful marker for monitoring exercise stress and (b) how CAR may be most appropriately used in future research...
October 10, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/29077022/effects-of-creatine-supplementation-on-muscle-strength-and-optimal-individual-post-activation-potentiation-time-of-the-upper-body-in-canoeists
#2
Chia-Chi Wang, Shu-Cheng Lin, Shu-Ching Hsu, Ming-Ta Yang, Kuei-Hui Chan
Creatine supplementation reduces the impact of muscle fatigue on post-activation potentiation (PAP) of the lower body, but its effects on the upper body remain unknown. This study examined the effects of creatine supplementation on muscle strength, explosive power, and optimal individual PAP time of the upper body during a set of complex training bouts in canoeists. Seventeen male high school canoeists performed a bench row for one repetition at maximum strength and conducted complex training bouts to determine the optimal individual timing of PAP and distance of overhead medicine ball throw before and after the supplementation...
October 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28978542/consumption-of-whole-eggs-promotes-greater-stimulation-of-postexercise-muscle-protein-synthesis-than-consumption-of-isonitrogenous-amounts-of-egg-whites-in-young-men
#3
Stephan van Vliet, Evan L Shy, Sidney Abou Sawan, Joseph W Beals, Daniel Wd West, Sarah K Skinner, Alexander V Ulanov, Zhong Li, Scott A Paluska, Carl M Parsons, Daniel R Moore, Nicholas A Burd
Background: Protein in the diet is commonly ingested from whole foods that contain various macro- and micronutrients. However, the effect of consuming protein within its natural whole-food matrix on postprandial protein metabolism remains understudied in humans.Objective: We aimed to compare the whole-body and muscle protein metabolic responses after the consumption of whole eggs with egg whites during exercise recovery in young men.Design: In crossover trials, 10 resistance-trained men [aged 21 ± 1 y; 88 ± 3 kg; body fat: 16% ± 1% (means ± SEMs)] received primed continuous l-[ring-(2)H5]phenylalanine and l-[1-(13)C]leucine infusions and performed a single bout of resistance exercise...
October 4, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28776086/the-mechanisms-of-action-of-metformin
#4
REVIEW
Graham Rena, D Grahame Hardie, Ewan R Pearson
Metformin is a widely-used drug that results in clear benefits in relation to glucose metabolism and diabetes-related complications. The mechanisms underlying these benefits are complex and still not fully understood. Physiologically, metformin has been shown to reduce hepatic glucose production, yet not all of its effects can be explained by this mechanism and there is increasing evidence of a key role for the gut. At the molecular level the findings vary depending on the doses of metformin used and duration of treatment, with clear differences between acute and chronic administration...
August 3, 2017: Diabetologia
https://www.readbyqxmd.com/read/28615996/international-society-of-sports-nutrition-position-stand-safety-and-efficacy-of-creatine-supplementation-in-exercise-sport-and-medicine
#5
REVIEW
Richard B Kreider, Douglas S Kalman, Jose Antonio, Tim N Ziegenfuss, Robert Wildman, Rick Collins, Darren G Candow, Susan M Kleiner, Anthony L Almada, Hector L Lopez
Creatine is one of the most popular nutritional ergogenic aids for athletes. Studies have consistently shown that creatine supplementation increases intramuscular creatine concentrations which may help explain the observed improvements in high intensity exercise performance leading to greater training adaptations. In addition to athletic and exercise improvement, research has shown that creatine supplementation may enhance post-exercise recovery, injury prevention, thermoregulation, rehabilitation, and concussion and/or spinal cord neuroprotection...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28489931/cortical-involvement-in-celiac-disease-before-and-after-long-term-gluten-free-diet-a-transcranial-magnetic-stimulation-study
#6
Manuela Pennisi, Giuseppe Lanza, Mariagiovanna Cantone, Riccardo Ricceri, Raffaele Ferri, Carmela Cinzia D'Agate, Giovanni Pennisi, Vincenzo Di Lazzaro, Rita Bella
OBJECTIVE: Transcranial Magnetic Stimulation in de novo patients with Celiac Disease previously revealed an imbalance in the excitability of cortical facilitatory and inhibitory circuits. After a median period of 16 months of gluten-free diet, a global increase of cortical excitability was reported, suggesting a glutamate-mediated compensation for disease progression. We have now evaluated cross-sectionally the changes of cortical excitability to TMS after a much longer gluten-free diet...
2017: PloS One
https://www.readbyqxmd.com/read/28018095/gastrointestinal-neuromuscular-apparatus-an-underestimated-target-of-gut-microbiota
#7
REVIEW
Michele Pier Luca Guarino, Michele Cicala, Lorenza Putignani, Carola Severi
Over the last few years, the importance of the resident intestinal microbiota in the pathogenesis of several gastro-intestinal diseases has been largely investigated. Growing evidence suggest that microbiota can influence gastro-intestinal motility. The current working hypothesis is that dysbiosis-driven mucosal alterations induce the production of several inflammatory/immune mediators which affect gut neuro-muscular functions. Besides these indirect mucosal-mediated effects, the present review highlights that recent evidence suggests that microbiota can directly affect enteric nerves and smooth muscle cells functions through its metabolic products or bacterial molecular components translocated from the intestinal lumen...
December 7, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27649242/a-systematic-review-of-athletes-and-coaches-nutrition-knowledge-and-reflections-on-the-quality-of-current-nutrition-knowledge-measures
#8
REVIEW
Gina L Trakman, Adrienne Forsyth, Brooke L Devlin, Regina Belski
CONTEXT: Nutrition knowledge can influence dietary choices and impact on athletic performance. Valid and reliable measures are needed to assess the nutrition knowledge of athletes and coaches. OBJECTIVES: (1) To systematically review the published literature on nutrition knowledge of adult athletes and coaches and (2) to assess the quality of measures used to assess nutrition knowledge. DATA SOURCES: MEDLINE, CINAHL, SPORTDiscuss, Web of Science, and SCOPUS...
September 16, 2016: Nutrients
https://www.readbyqxmd.com/read/27560446/mechanisms-by-which-cocoa-flavanols-improve-metabolic-syndrome-and-related-disorders
#9
REVIEW
Karen M Strat, Thomas J Rowley, Andrew T Smithson, Jeffery S Tessem, Matthew W Hulver, Dongmin Liu, Brenda M Davy, Kevin P Davy, Andrew P Neilson
Dietary administration of cocoa flavanols may be an effective complementary strategy for alleviation or prevention of metabolic syndrome, particularly glucose intolerance. The complex flavanol composition of cocoa provides the ability to interact with a variety of molecules, thus allowing numerous opportunities to ameliorate metabolic diseases. These interactions likely occur primarily in the gastrointestinal tract, where native cocoa flavanol concentration is high. Flavanols may antagonize digestive enzymes and glucose transporters, causing a reduction in glucose excursion, which helps patients with metabolic disorders maintain glucose homeostasis...
September 2016: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/24681572/nitrate-supplementation-enhances-the-contractile-properties-of-human-skeletal-muscle
#10
RANDOMIZED CONTROLLED TRIAL
Georg Haider, Jonathan P Folland
PURPOSE: Dietary nitrate supplementation positively affects cardiovascular function at rest and energy metabolism during exercise in humans and has recently also been reported to markedly enhance the in vitro contractile properties of mouse fast-twitch muscle. The aim of this study was to investigate the effects of short-term nitrate supplementation on the in vivo contractile properties of the skeletal muscle and voluntary muscle function of humans. METHODS: In a double-blind, randomized, crossover design, 19 healthy untrained men (21 ± 3 yr) ingested a nitrate-rich concentrated beetroot juice (NIT; nitrate dosage, approximately 9...
December 2014: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/26497149/can-doping-be-a-good-thing-using-psychoactive-drugs-to-facilitate-physical-activity-behaviour
#11
REVIEW
Samuele Marcora
No abstract text is available yet for this article.
January 2016: Sports Medicine
https://www.readbyqxmd.com/read/27432852/the-female-athlete-triad
#12
Amanda K Weiss Kelly, Suzanne Hecht
The number of girls participating in sports has increased significantly since the introduction of Title XI in 1972. As a result, more girls have been able to experience the social, educational, and health-related benefits of sports participation. However, there are risks associated with sports participation, including the female athlete triad. The triad was originally recognized as the interrelationship of amenorrhea, osteoporosis, and disordered eating, but our understanding has evolved to recognize that each of the components of the triad exists on a spectrum from optimal health to disease...
August 2016: Pediatrics
https://www.readbyqxmd.com/read/27466609/serum-zinc-is-a-major-predictor-of-anemia-and-mediates-the-effect-of-selenium-on-hemoglobin-in-school-aged-children-in-a-nationally-representative-survey-in-new-zealand
#13
Lisa A Houghton, Winsome R Parnell, Christine D Thomson, Timothy J Green, Rosalind S Gibson
BACKGROUND: Zinc, selenium, and vitamin D status of New Zealand (NZ) school-aged children was examined in a national survey in 2002. To our knowledge, however, the role of these micronutrients as predictors of hemoglobin has not been explored despite plausible mechanisms for such relations. OBJECTIVE: We examined the relations of iron, zinc, selenium, and vitamin D status with hemoglobin and anemia in children of New Zealand European and other (NZEO) ethnicity enrolled in the 2002 Children's Nutrition Survey and explored whether zinc mediated the relation between selenium and hemoglobin...
September 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27065833/bread-and-other-edible-agents-of-mental-disease
#14
REVIEW
Paola Bressan, Peter Kramer
Perhaps because gastroenterology, immunology, toxicology, and the nutrition and agricultural sciences are outside of their competence and responsibility, psychologists and psychiatrists typically fail to appreciate the impact that food can have on their patients' condition. Here we attempt to help correct this situation by reviewing, in non-technical, plain English, how cereal grains-the world's most abundant food source-can affect human behavior and mental health. We present the implications for the psychological sciences of the findings that, in all of us, bread (1) makes the gut more permeable and can thus encourage the migration of food particles to sites where they are not expected, prompting the immune system to attack both these particles and brain-relevant substances that resemble them, and (2) releases opioid-like compounds, capable of causing mental derangement if they make it to the brain...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/26408108/how-we-diagnose-and-treat-iron-deficiency-anemia
#15
REVIEW
Michael Auerbach, John W Adamson
It is estimated that one-third of the world's population is anemic, the majority being due to iron deficiency (ID). In adults, ID is associated with fatigue in the absence of anemia, restless legs syndrome, pica and, in neonates, delayed growth and development. In adolescents, ID is associated with decrements in learning and behavioral abnormalities. In the absence of a clear cause, search for a source of bleeding is indicated. No single test is diagnostic of ID unless the serum ferritin is low or the percent transferrin saturation is low with an elevated total iron binding capacity...
January 2016: American Journal of Hematology
https://www.readbyqxmd.com/read/27138598/strategies-for-the-assessment-of-metabolic-profiles-of-steroid-hormones-in-view-of-diagnostics-and-drug-monitoring-analytical-problems-and-challenges
#16
REVIEW
Alina Plenis, Ilona Oledzka, Piotr Kowalski, Tomasz Baczek
BACKGROUND: During the last few years there has been a growing interest in research focused on the metabolism of steroid hormones despite that the study of metabolic hormone pathways is still a difficult and demanding task because of low steroid concentrations and a complexity of the analysed matrices. Thus, there has been an increasing interest in the development of new, more selective and sensitive methods for monitoring these compounds in biological samples. METHODS: A lot of bibliographic databases for world research literature were structurally searched using selected review question and inclusion/exclusion criteria...
2016: Current Drug Metabolism
https://www.readbyqxmd.com/read/26553492/nutritional-support-for-exercise-induced-injuries
#17
REVIEW
Kevin D Tipton
Nutrition is one method to counter the negative impact of an exercise-induced injury. Deficiencies of energy, protein and other nutrients should be avoided. Claims for the effectiveness of many other nutrients following injuries are rampant, but the evidence is equivocal. The results of an exercise-induced injury may vary widely depending on the nature of the injury and severity. Injuries typically result in cessation, or at least a reduction, in participation in sport and decreased physical activity. Limb immobility may be necessary with some injuries, contributing to reduced activity and training...
November 2015: Sports Medicine
https://www.readbyqxmd.com/read/26457726/recent-insight-in-the-pathophysiology-of-coeliac-disease-relevance-to-rheumatoid-arthritis
#18
REVIEW
Frits Koning
Coeliac disease (CD) is a T cell mediated inflammatory disorder of the small intestine that affects approximately 1% of the population (1, 2). CD is triggered by gluten ingestion, proteins found in wheat, barley and rye. CD4(+) T cells specific for post-translationally modified gluten peptides bound to the disease-predisposing HLA-DQ2 or HLADQ8 molecules are typically found in patients with CD, explaining the strong association between these HLA-alleles and the occurrence of CD (1, 2). In addition, antibodies specific for modified gluten are also present in patients with CD, implying a role for B to T cell presentation (1)...
July 2015: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/26316828/role-of-nutrition-in-performance-enhancement-and-postexercise-recovery
#19
REVIEW
Kathryn L Beck, Jasmine S Thomson, Richard J Swift, Pamela R von Hurst
A number of factors contribute to success in sport, and diet is a key component. An athlete's dietary requirements depend on several aspects, including the sport, the athlete's goals, the environment, and practical issues. The importance of individualized dietary advice has been increasingly recognized, including day-to-day dietary advice and specific advice before, during, and after training and/or competition. Athletes use a range of dietary strategies to improve performance, with maximizing glycogen stores a key strategy for many...
2015: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/25646324/a-high-whey-protein-leucine-and-vitamin-d-enriched-supplement-preserves-muscle-mass-during-intentional-weight-loss-in-obese-older-adults-a-double-blind-randomized-controlled-trial
#20
RANDOMIZED CONTROLLED TRIAL
Amely M Verreijen, Sjors Verlaan, Mariëlle F Engberink, Sophie Swinkels, Johan de Vogel-van den Bosch, Peter J M Weijs
BACKGROUND: Intentional weight loss in obese older adults is a risk factor for muscle loss and sarcopenia. OBJECTIVE: The objective was to examine the effect of a high whey protein-, leucine-, and vitamin D-enriched supplement on muscle mass preservation during intentional weight loss in obese older adults. DESIGN: We included 80 obese older adults in a double-blind randomized controlled trial. During a 13-wk weight loss program, all subjects followed a hypocaloric diet (-600 kcal/d) and performed resistance training 3×/wk...
February 2015: American Journal of Clinical Nutrition
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