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37 papers 100 to 500 followers MH Residency - Sports Nutrition
Lindsay S Macnaughton, Sophie L Wardle, Oliver C Witard, Chris McGlory, D Lee Hamilton, Stewart Jeromson, Clare E Lawrence, Gareth A Wallis, Kevin D Tipton
The currently accepted amount of protein required to achieve maximal stimulation of myofibrillar protein synthesis (MPS) following resistance exercise is 20-25 g. However, the influence of lean body mass (LBM) on the response of MPS to protein ingestion is unclear. Our aim was to assess the influence of LBM, both total and the amount activated during exercise, on the maximal response of MPS to ingestion of 20 or 40 g of whey protein following a bout of whole-body resistance exercise. Resistance-trained males were assigned to a group with lower LBM (≤65 kg; LLBM n = 15) or higher LBM (≥70 kg; HLBM n = 15) and participated in two trials in random order...
August 2016: Physiological Reports
Yahya Javadian, Marzieh Adabi, Behzad Heidari, Mansour Babaei, Alireza Firouzjahi, Behnaz Y Ghahhari, Karim Hajian-Tilaki
BACKGROUND: Quadriceps muscle weakness and vitamin D deficiency are associated with knee osteoarthritis (KOA). This study aimed to investigate the relationship between quadriceps muscle strength (QMS) and vitamin D in KOA. METHODS: Patients with KOA aged 40 years and above were studied. QMS was assessed by the dynanometry method and serum 25-hydroxyvitamin D (25-OHD) by the ELISA method. Serum 25-OHD<20 ng/mL was considered as a deficiency. The intensity of knee pain was determined by the Western Ontario and McMaster Universities Osteoarthritis Index pain scale...
February 17, 2016: Clinical Journal of Pain
S A Lanham-New, L R Wilson
No abstract text is available yet for this article.
February 2016: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
Fumiaki Imamura, Laura O'Connor, Zheng Ye, Jaakko Mursu, Yasuaki Hayashino, Shilpa N Bhupathiraju, Nita G Forouhi
OBJECTIVES: To examine the prospective associations between consumption of sugar sweetened beverages, artificially sweetened beverages, and fruit juice with type 2 diabetes before and after adjustment for adiposity, and to estimate the population attributable fraction for type 2 diabetes from consumption of sugar sweetened beverages in the United States and United Kingdom. DESIGN: Systematic review and meta-analysis. DATA SOURCES AND ELIGIBILITY: PubMed, Embase, Ovid, and Web of Knowledge for prospective studies of adults without diabetes, published until February 2014...
April 2016: British Journal of Sports Medicine
Rachel A Hildebrand, Bridget Miller, Aric Warren, Deana Hildebrand, Brenda J Smith
Increasing evidence indicates that compromised vitamin D status, as indicated by serum 25-hydroxyvitamin D (25-OH D), is associated with decreased muscle function. The purpose of this study was to determine the vitamin D status of collegiate athletes residing in the southern U.S. and its effects on muscular strength and anaerobic power. Collegiate athletes (n=103) from three separate NCAA athletic programs were recruited for the study. Anthropometrics, vitamin D and calcium intake, and sun exposure data were collected along with serum 25-OH D and physical performance measures (Vertical Jump Test, Shuttle Run Test, Triple Hop for Distance Test and the 1 Repetition Maximum Squat Test) to determine the influence of vitamin D status on muscular strength and anaerobic power...
August 24, 2016: International Journal of Sport Nutrition and Exercise Metabolism
Antonio Monroy Antón, Lucía Sagarra Romero
No abstract text is available yet for this article.
July 2016: British Journal of Sports Medicine
Amy T Hutchison, Leonie K Heilbronn
Obesity prevalence continues to rise throughout the developed world, as a result of positive energy balance and reduced physical activity. At present, there is still a perception within the general community, and amongst some nutritionists, that eating multiple small meals spaced throughout the day is beneficial for weight control and metabolic health. However, intervention trials do not generally support the epidemiological evidence, and data is emerging to suggest that increasing the fasting period between meals may beneficially impact body weight and metabolic health...
May 2016: Biochimie
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
Samuele Marcora
No abstract text is available yet for this article.
January 2016: Sports Medicine
Daniela De Stefanis, Raffaella Mastrocola, Debora Nigro, Paola Costelli, Manuela Aragno
PURPOSE: In recent years, the increasing consumption of soft drinks containing high-fructose corn syrup or sucrose has caused a rise in fructose intake, which has been related to the epidemic of metabolic diseases. As fructose and glucose intake varies in parallel, it is still unclear what the effects of the increased consumption of the two single sugars are. In the present study, the impact of chronic consumption of glucose or fructose on skeletal muscle of healthy mice was investigated...
October 20, 2015: European Journal of Nutrition
Ran Jin, Miriam B Vos
PURPOSE OF REVIEW: The purpose was to summarize recent advances in the understanding of nonalcoholic fatty liver disease (NAFLD) pathophysiology and the role of fructose in NAFLD. RECENT FINDINGS: Epidemiological studies continue to point to a strong association between high fructose intake and NAFLD and its severity. New studies of NAFLD reveal the importance of upregulated de novo lipogenesis as a key feature in its pathophysiology along with increased visceral adiposity and alteration of gut microbiome...
September 2015: Current Opinion in Clinical Nutrition and Metabolic Care
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
Heather J Leidy, Peter M Clifton, Arne Astrup, Thomas P Wycherley, Margriet S Westerterp-Plantenga, Natalie D Luscombe-Marsh, Stephen C Woods, Richard D Mattes
Over the past 20 y, higher-protein diets have been touted as a successful strategy to prevent or treat obesity through improvements in body weight management. These improvements are thought to be due, in part, to modulations in energy metabolism, appetite, and energy intake. Recent evidence also supports higher-protein diets for improvements in cardiometabolic risk factors. This article provides an overview of the literature that explores the mechanisms of action after acute protein consumption and the clinical health outcomes after consumption of long-term, higher-protein diets...
April 29, 2015: American Journal of Clinical Nutrition
Blaise Pascale, Clay Steele, Selasi Attipoe, Francis G OʼConnor, Patricia A Deuster
OBJECTIVE: Certain dietary supplements (DSs) used by military populations pose a threat to overall readiness. This study assessed members of the American Medical Society for Sports Medicine (AMSSM) regarding their knowledge of DS use among their patients and reporting of suspected adverse events. DESIGN: A thirteen-question retrospective, cross-sectional, Web-based survey sought data on practices regarding DSs and adverse event reporting. SETTING: Anonymous Web-based survey...
March 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Charlotte Lanhers, Bruno Pereira, Geraldine Naughton, Marion Trousselard, François-Xavier Lesage, Frédéric Dutheil
BACKGROUND: Creatine is the most widely used supplementation to increase strength performance. However, the few meta-analyses are more than 10 years old and suffer from inclusion bias such as the absence of randomization and placebo, the diversity of the inclusion criteria (aerobic/endurance, anaerobic/strength), no evaluation on specific muscles or group of muscles, and the considerable amount of conflicting results within the last decade. OBJECTIVE: The objective of this systematic review was to evaluate meta-analyzed effects of creatine supplementation on lower limb strength performance...
September 2015: Sports Medicine
Elvira Isganaitis, Robert H Lustig
Rates of obesity and insulin resistance have climbed sharply over the past 30 years. These epidemics are temporally related to a dramatic rise in consumption of fast food; until recently, it was not known whether the fast food was driving the obesity, or vice versa. We review the unique properties of fast food that make it the ideal obesigenic foodstuff, and elucidate the mechanisms by which fast food intake contributes to obesity, emphasizing its effects on energy metabolism and on the central regulation of appetite...
December 2005: Arteriosclerosis, Thrombosis, and Vascular Biology
Eric R Helms, Alan A Aragon, Peter J Fitschen
The popularity of natural bodybuilding is increasing; however, evidence-based recommendations for it are lacking. This paper reviewed the scientific literature relevant to competition preparation on nutrition and supplementation, resulting in the following recommendations. Caloric intake should be set at a level that results in bodyweight losses of approximately 0.5 to 1%/wk to maximize muscle retention. Within this caloric intake, most but not all bodybuilders will respond best to consuming 2.3-3.1 g/kg of lean body mass per day of protein, 15-30% of calories from fat, and the reminder of calories from carbohydrate...
2014: Journal of the International Society of Sports Nutrition
Amit Momaya, Marc Fawal, Reed Estes
Performance-enhancing substances (PESs) have unfortunately become ubiquitous in numerous sports, often tarnishing the spirit of competition. Reported rates of PES use among athletes are variable and range from 5 to 31%. More importantly, some of these substances pose a serious threat to the health and well-being of athletes. Common PESs include anabolic-androgenic steroids, human growth hormone, creatine, erythropoietin and blood doping, amphetamines and stimulants, and beta-hydroxy-beta-methylbutyrate. With recent advances in technology, gene doping is also becoming more conceivable...
April 2015: Sports Medicine
Sabine Schlegel, Armin Hartmann, Reinhard Fuchs, Almut Zeeck
PURPOSE: Many patients with anorexia or bulimia nervosa use physical activity as a method to influence weight and shape and/or exercise in a compulsive manner. This form of exercising is associated with a more severe illness and higher relapse rates. In a proof-of-concept study, effects of a newly developed sport therapy program aiming to reduce unhealthy exercising were assessed. METHODS: Thirty-six patients with eating disorders took part in four group terms of the program, each lasting 3 months...
September 2015: Eating and Weight Disorders: EWD
Mahroukh Rafii, Karen Chapman, Jillian Owens, Rajavel Elango, Wayne W Campbell, Ronald O Ball, Paul B Pencharz, Glenda Courtney-Martin
BACKGROUND: Studies on protein requirements in vulnerable groups such as older adults are few, and results are conflicting. OBJECTIVE: The main objective of this study was to determine the protein requirements of free-living women >65 y by measuring the oxidation of l-[1-(13)C]phenylalanine to (13)CO2 in response to graded intakes of protein. METHODS: Twelve subjects participated in the study, with protein intakes ranging from 0.2 to 2...
January 2015: Journal of Nutrition
2015-01-24 21:40:44
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