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Sport nutrition

L Maïmoun, F Paris, O Coste, C Sultan
Participation in recreational physical activity is widely acknowledged to provide significant health benefits. Conversely, intense training imposes several constraints, such as intermittent or chronic metabolic and psychogenic training stressors and maintenance of very low body fat to maximize performance. Adolescent and adult athletic women are therefore at risk of overtraining and/or poor dietary intake, which may have several consequences for endocrine function particularly on hypothalamic-pituitary-gonadal axis...
October 14, 2016: Gynécologie, Obstétrique & Fertilité
María Serrano Iglesias, María de Lourdes Samaniego Vaesken, Gregorio Varela Moreiras
: The aim of this study was to draw an updated map of the nutrition facts in the different categories of non-alcoholic beverages in the Spanish market based on the information declared on the labels of these products; we expect this first step to justify the need for the coordination and harmonization of food composition tables in Spain so that there will be an updated database available to produce realistic scientific nutrient intake estimates in accordance with the actual market scenario...
October 8, 2016: Nutrients
Christopher C Waller, Malcolm D McLeod
In recent years the potential for anabolic steroid abuse in equine sports has increased due to the growing availability of "designer steroids". These compounds are readily accessible online in "dietary" or "nutritional" supplements and contain steroidal compounds which have never been tested or approved as veterinary agents. They typically have unusual structures or substitution and as a result may pass undetected through current anti-doping screening protocols, making them a significant concern for the integrity of the industry...
October 12, 2016: Drug Testing and Analysis
Carolyn R Plateau, Trent A Petrie, Anthony Papathomas
The present study used an open-ended survey to collect information about current eating practices and coping strategies among 218 retired female athletes. An inductive and deductive thematic analysis revealed three themes relevant to the intuitive eating framework-permission to eat; recognizing internal hunger and satiety cues; and eating to meet physical and nutritional needs. Athletes described feeling liberated with regards to their eating following retirement from sport, and for some this included an alleviation of disordered eating practices...
August 12, 2016: Eating Disorders
Brooke L Devlin, Michael D Leveritt, Michael Kingsley, Regina Belski
Sports nutrition professionals aim to influence nutrition knowledge, dietary intake and body composition to improve athletic performance. Understanding the interrelationships between these factors and how they vary across sports has the potential to facilitate better-informed and targeted sports nutrition practice. This observational study assessed body composition (DXA), dietary intake (multiple-pass 24-hour recall) and nutrition knowledge (two previously validated tools) of elite and sub-elite male players involved in two team-based sports; Australian football (AF) and soccer...
October 6, 2016: International Journal of Sport Nutrition and Exercise Metabolism
Pamela J Magee, Alison M Gallagher, Jacqueline M McCormack
Although dehydration of ≥2% body weight (BW) loss significantly impairs endurance performance, dehydration remains prevalent among athletes and may be owing to a lack of knowledge in relation to fluid requirements. The aim of this study was to assess the hydration status of university/club level athletes (n=430) from a range of sports/activities (army officer cadet training; bootcamp training; cycling; Gaelic Athletic Association camogie, football and hurling; golf; hockey; netball; rugby; running (sprinting and endurance); Shotokan karate and soccer) immediately before and after training/competition and to assess their nutritional knowledge...
October 6, 2016: International Journal of Sport Nutrition and Exercise Metabolism
Ilias Katsougrakis, Alexandros P Apostolopoulos, Samantha Z Tross
UNLABELLED: Femoral-neck stress fractures are relatively rare and may present as sports-related injuries. The presentation is variable, and prompt diagnosis facilitates the earliest return to pre-morbid functional activity levels. Delayed detection may precipitate femoral non-union or avascular necrosis, resulting in long-term functional deficit. AIMS: We describe the clinical, diagnostic and therapeutic approach of a femoral-neck stress fracture that occurred in a 28-year-old female recreational runner...
2016: Journal of Long-term Effects of Medical Implants
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
Łukasz Kryst, Agnieszka Woronkowicz, Małgorzata Kowal, Jan Sobiecki
OBJECTIVES: The size and proportions of the human body change continuously in response to social change and economic development. As reported by papers on intergenerational changes in chest size, this part of the human body is also influenced by environmental factors. The aim of this study was to assess changes in the dimensions and proportions of the chest of children and adolescents over a span of 70 years. METHODS: In 2010 an anthropological study was conducted on 3878 children and adolescents aged 3-18 years living in Kraków (Poland)...
September 17, 2016: American Journal of Human Biology: the Official Journal of the Human Biology Council
E Mertens, P Clarys, P Mullie, J Lefevre, R Charlier, S Knaeps, I Huybrechts, B Deforche
BACKGROUND: Regular physical activity (PA), a high level of fitness and a high diet quality are positively associated with health. However, information about stability of fitness components and diet quality indices is limited. This study aimed to evaluate stability of those parameters. METHODS: This study includes 652 adults (men=57.56 (10.28) years; women=55.90 (8.34) years at follow-up) who participated in 2002-2004 and returned for follow-up at the Policy Research Centre Leuven in 2012-2014...
September 14, 2016: European Journal of Clinical Nutrition
Floris C Wardenaar, Ingrid Jm Ceelen, Jan-Willem Van Dijk, Roland Wj Hangelbroek, Lore Van Roy, Britte Van der Pouw, Jeanne Hm De Vries, Marco Mensink, Renger F Witkamp
The use of nutritional supplements is highly prevalent among athletes. In this cross-sectional study we assessed the prevalence of nutritional supplement use by a large group of Dutch competitive athletes in relation to dietary counselling. A total of 778 athletes (407 males and 371 females) completed a web-based questionnaire about the use of nutritional supplements. Log-binomial regression models were applied to estimate crude and adjusted prevalence ratios (PR) for the use of individual nutritional supplements in athletes receiving dietary counselling as compared to athletes not receiving dietary counselling...
September 6, 2016: International Journal of Sport Nutrition and Exercise Metabolism
Hans-Jörg Helmlin, André Mürner, Samuel Steiner, Matthias Kamber, Christina Weber, Hans Geyer, Sven Guddat, Wilhelm Schänzer, Mario Thevis
Hydrochlorothiazide (HCTZ, 6-chloro-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide-1,1-dioxide) belongs to the class of diuretic agents that represent one of today's cornerstones of the treatment of hypertensive patients. In addition to its clinical relevance, HCTZ is prohibited in sports according to the regulations of the World Anti-Doping Agency (WADA) at all times and has frequently been detected in sports drug testing urine samples worldwide since its ban was introduced in 1988. Despite these facts, the adverse analytical finding concerning HCTZ in an in-competition routine doping control sample collected in December 2014 was further investigated, particularly motivated by the comparably low urinary concentration of the drug accounting for approximately 5ng/mL...
October 2016: Forensic Science International
Çiğdem Bozkir, Ali Özer, Erkan Pehlivan
OBJECTIVE: The purpose of this study was to investigate the prevalence of obesity, and the risk factors associated with it, in physically disabled adults living in the city centre of Malatya, Turkey. METHOD: This research was designed as a cross-sectional study conducted on physically disabled people aged 20-65 years living in the city centre of Malatya. The prevalence of obesity in disabled people was within 95% CIs, the power was calculated as 80%, and the sample size of our population was calculated as 258 individuals...
2016: BMJ Open
Bailey P Tackett, Trent A Petrie, Carlin M Anderson
Female athletes often experience sport-environment pressures about weight, eating, and body composition from within the sport environment. One pressure that may be particularly debilitating is being weighed as a requirement of sport participation. Using 414 female collegiate athletes from weight-sensitive sports, we examined the frequency of weigh-ins, weight intentionality, weight-management practices, and eating and nutritional behaviors. Of the 41% of athletes who were weighed, most were done by athletic trainers in private (82%) and prepared by using at least one weight management strategy (75%)...
August 24, 2016: Eating Behaviors
Markus Strauß, Peter Foshag, Bianca Przybylek, Marc Horlitz, Alejandro Lucia, Fabian Sanchis-Gomar, Roman Leischik
BACKGROUND: The treatment and prevention of the metabolic syndrome (MetS) is currently one of the major challenges in medicine. The impact of working conditions on metabolic risk has not been adequately studied. Our objective was to compare the prevalence of MetS and metabolic risk in two extremely different occupational groups: firefighters and office workers. METHODS: A total of 143 male subjects (97 firefighters and 46 office workers) from Germany participated in the study...
2016: Diabetology & Metabolic Syndrome
Ickpyo Hong, Patty Coker-Bolt, Kelly R Anderson, Danbi Lee, Craig A Velozo
OBJECTIVE: This study examined the relationship between childhood obesity and overweight and functional activity and its enjoyment. METHOD: A cross-sectional design was used to analyze data from the 2012 National Health and Nutrition Examination Survey National Youth Fitness Survey. Multivariate logistic regression models were used. RESULTS: Data for 1,640 children ages 3-15 yr were retrieved. Physical activity was negatively associated with risk of obesity (odds ratio [OR] = 0...
September 2016: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
Barbara Frączek, Maja Warzecha, Florentyna Tyrała, Aleksandra Pięta
BACKGROUND: Athletic performance can be substantially enhanced with supplements and functional food which are considered by scientists as efficient, safe and legal, such as protein, carbohydrate and protein-carbohydrate supplements, isotonic sports drinks, carbohydrate-protein bars, carbohydrate bars, creatine and caffeine. OBJECTIVE: The study is aimed at an analysis and evaluation of the prevalence of using effective ergogenic aids (creatine, caffeine, isotonic drinks, carbohydrates, and proteins) in a group of Polish professional athletes...
2016: Roczniki Państwowego Zakładu Higieny
Rakefet Arieli, Yair Lahav
Use of performance-enhancing supplements occurs at all levels of sports, from recreational athletes to professional athletes. Although some supplements do enhance athletic performance, many have no proven benefits and have adverse effects. Nutritional supplements are categorized into the following categories: I. Apparently Effective. II. Possibly Effective. III. Too Early To Tell. IV. Apparently Ineffective. This article will review 4 ergogenic supplements which are categorized in the first category--"Apparently Effective"--1) Buffer agents 2) Creatine 3) Caffeine and 4 Nitric Oxide...
June 2016: Harefuah
Gal Dubnov-Raz, Yael Mashiach-Arazi, Rakefet Arieli, Raanan Raz, Naama W Constantini
BACKGROUND: Taekwondo is a martial art and a combat Olympic sport. Similar to other types of combat sports, Taekwondo fights are conducted between opponents grouped by sex, age and weight classes. Disordered eating behaviors are common in combat sports with weight classes, attributed to the athletes' need to remain within a specific weight range. Pre-competition rapid weight loss (RWL) is also common, and entails a health risk. AIM: To assess the eating attitudes and the prevalence and techniques of RWL among young Taekwondo fighters...
June 2016: Harefuah
Safaa Tawfik, Nehal El Koofy, Eman Mohamed Ibraheim Moawad
The aim of this study was to investigate the pattern of basic and sport nutrition as well as perspectives of young Egyptian athletes. Structured interview survey measuring knowledge, attitudes, beliefs and behaviors about basic and sport nutrition was administered to adolescent athletes recruited from 4 sport clubs and 2 fitness centers in Greater Cairo governorate. A total of 358 participants aged 13-18 years completed questionnaires. Basic nutrition knowledge was reasonable in almost all domains except fast food...
2016: PloS One
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