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Sports Nutrition, performance

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https://www.readbyqxmd.com/read/27923448/fit-with-good-fat-the-role-of-n-3-polyunsaturated-fatty-acids-on-exercise-performance
#1
REVIEW
Mariasole Da Boit, Angus M Hunter, Stuart R Gray
N-3 PUFA (n-3) polyunsaturated fatty acids (PUFA) are a family of fatty acids mainly found in oily fish and fish oil supplements. The effects of n-3 PUFA on health are mainly derived from its anti-inflammatory proprieties and its influence on immune function. Lately an increased interest in n-3 PUFA supplementation has reached the world of sport nutrition, where the majority of athletes rely on nutrition strategies to improve their training and performance. A vast amount of attention is paid in increasing metabolic capacity, delaying the onset of fatigue, and improving muscle hypertrophy and neuromuscular function...
January 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/27882605/placebo-in-sports-nutrition-a-proof-of-principle-study-involving-caffeine-supplementation
#2
B Saunders, L F de Oliveira, R P da Silva, V de Salles Painelli, L S Gonçalves, G Yamaguchi, T Mutti, E Maciel, H Roschel, G G Artioli, B Gualano
We investigated the effects of supplement identification on exercise performance with caffeine supplementation. Forty-two trained cyclists (age 37 ± 8 years, body mass [BM] 74.3 ± 8.4 kg, height 1.76 ± 0.06 m, maximum oxygen uptake 50.0 ± 6.8 mL/kg/min) performed a ~30 min cycling time-trial 1 h following either 6 mg/kgBM caffeine (CAF) or placebo (PLA) supplementation and one control (CON) session without supplementation. Participants identified which supplement they believed they had ingested ("caffeine", "placebo", "don't know") pre- and post-exercise...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27872757/sports-nutrition-knowledge-among-mid-major-division-i-university-student-athletes
#3
Ashley Andrews, Janet R Wojcik, Joni M Boyd, Charles J Bowers
Competitive athletes have goals to optimize performance and to maintain healthy body composition. Sports nutrition is a component of training programs often overlooked by student-athletes and their coaches. The purpose of this study was to examine student-athletes' sports nutrition knowledge across sex, class level, team, and completion of prior nutrition coursework. Participants included 123 mid-major Division I university student-athletes (47 females and 76 males) from baseball, softball, men's soccer, track and field, and tennis...
2016: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/27858306/menthol-a-fresh-ergogenic-aid-for-athletic-performance
#4
Christopher J Stevens, Russ Best
The application of menthol has recently been researched as a performance-enhancing aid for various aspects of athletic performance including endurance, speed, strength and joint range of motion. A range of application methods has been used including a mouth rinse, ingestion of a beverage containing menthol or external application to the skin or clothing via a gel or spray. The majority of research has focussed on the use of menthol to impart a cooling sensation on athletes performing endurance exercise in the heat...
November 17, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27855498/mitochondria-targeted-nutraceuticals-in-sports-medicine-a-new-perspective
#5
Sergej M Ostojic
Since mitochondria have been recognized as the cells' key organelles involved in the energy utilization during exercise, targeting the organelle with specifically designed compounds (mitochondria-targeted nutraceuticals, MTNs) may have a great promise in the prevention and treatment of heavy exercise-related mitochondrial dysfunction. In vitro studies suggested that MTNs have antioxidant effects at the molecular level, and might boost mitochondrial biogenesis and organelle bioenergetics, with both processes are known to positively affect exercise performance and recovery...
November 18, 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27824059/vitamin-d-deficiency-in-individuals-with-a-spinal-cord-injury-a-literature-review
#6
REVIEW
J L Flueck, C Perret
STUDY DESIGN: Literature review of studies investigating vitamin D status in individuals with a spinal cord injury (SCI). OBJECTIVES: Prevalence of vitamin D deficiency seems to be high in the general population. Little is known regarding such a deficiency in individuals with a SCI. This review aimed to examine the literature that investigated vitamin D status in this population. SETTING: Switzerland. METHODS: A literature review was performed to investigate the prevalence of vitamin D deficiency in individuals with a SCI and to determine the factors leading to deficiency...
November 8, 2016: Spinal Cord
https://www.readbyqxmd.com/read/27806009/tapering-practices-of-croatian-open-class-powerlifting-champions
#7
Jozo Grgic, Pavle Mikulic
The aim of this study was to explore tapering practices among 10 Croatian open-class powerlifting champions (mean ± SD: age 29.2 ± 3.2 years; Wilks coefficient 355.1 ± 54.8). The athletes were interviewed about their tapering practices using a semi-structured interview, after which the audio content was transcribed. The athletes reported decreasing training volume during the taper by 50.5 ± 11.7% using a step type or an exponential type of taper with a fast decay. Training intensity was maintained or increased during the taper, and it reached its highest values 8 ± 3 days before the competition...
October 27, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27789774/post-exercise-muscle-glycogen-resynthesis-in-humans
#8
Louise M Burke, Luc J C van Loon, John A Hawley
Since the pioneering studies conducted in the 1960s in which glycogen status was investigated utilizing the muscle biopsy technique, sports scientists have developed a sophisticated appreciation of the role of glycogen in cellular adaptation and exercise performance, as well as sites of storage of this important metabolic fuel. While sports nutrition guidelines have evolved during the past decade to incorporate sport-specific and periodized manipulation of carbohydrate (CHO) availability, athletes attempt to maximise muscle glycogen synthesis between important workouts or competitive events so that fuel stores closely match to the demands of the prescribed exercise...
October 27, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27777542/gender-differences-and-access-to-a-sports-dietitian-influence-dietary-habits-of-collegiate-athletes
#9
Michael V Hull, Andrew R Jagim, Jonathan M Oliver, Mike Greenwood, Deanna R Busteed, Margaret T Jones
BACKGROUND: Limited research exists on the effect of a sports dietitian (SD) on athletes' dietary habits and nutrient periodization, which is the deliberate manipulation of macronutrient intake to match training goals. Further, the difference in dietary habits between men and women collegiate athletes has been understudied. A survey questionnaire examining dietary habits and practices was administered to athletes at two universities that employed a full time SD. Not all athletes used the SD as their primary source for nutritional guidance...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27751748/-intensive-training-and-menstrual-disorders-in-young-female-impact-on-bone-mass
#10
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...
November 2016: Gynécologie, Obstétrique & Fertilité
https://www.readbyqxmd.com/read/27710165/dietary-intake-body-composition-and-nutrition-knowledge-of-australian-football-and-soccer-players-implications-for-sports-nutrition-professionals-in-practice
#11
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
https://www.readbyqxmd.com/read/27710146/high-prevalence-of-dehydration-and-inadequate-nutritional-knowledge-among-university-and-club-level-athletes
#12
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
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
#13
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/27615123/nutritional-supplement-use-by-dutch-elite-and-sub-elite-athletes-does-receiving-dietary-counselling-make-a-difference
#14
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
https://www.readbyqxmd.com/read/27546324/prevalence-of-the-use-of-effective-ergogenic-aids-among-professional-athletes
#15
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
https://www.readbyqxmd.com/read/27544991/-ergogenic-sport-supplements-for-athletes
#16
REVIEW
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
https://www.readbyqxmd.com/read/27544985/-eating-attitudes-and-pre-competition-rapid-weight-loss-in-young-taekwondo-fighters
#17
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
https://www.readbyqxmd.com/read/27529492/patterns-of-nutrition-and-dietary-supplements-use-in-young-egyptian-athletes-a-community-based-cross-sectional-survey
#18
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
https://www.readbyqxmd.com/read/27490353/-characteristics-of-nutrition-in-competitive-sports-ranging-from-leisure-activities-to-high-performance-athletics
#19
H Braun
Nutrition has a crucial influence on physical and mental performance ability and is an important measure along sidetraining in high-performance athletes. However, this form of nutritionis not applicable for every athlete and in every situation. The question of optimal nutrition requires involvement with the particular type of sports, an athlete's current training stage, and athletes' individual requirements and objectives. Implementation takes time and individual motivation on the part of athletes and the specialist staff who engage intensively with the nutritional needs of athletes...
August 2016: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/27485956/-conclusions-of-the-ii-international-and-iv-spanish-hydration-congress-toledo-spain-2nd-4th-december-2015
#20
Javier Aranceta-Bartrina, Ángel Gil, Ascensión Marcos, Carmen Pérez-Rodrigo, Lluis Serra-Majem, Gregorio Varela-Moreiras
Javier Aranceta-Bartrina1, Ángel Gil2, Ascensión Marcos3, Carmen Pérez-Rodrigo4, Lluis Serra-Majem5 and Gregorio Varela-Moreiras6*1Associate Professor at University of Navarra. Pamplona, Spain. 2Professor of Biochemistry and Molecular Biology. University of Granada. Granada, Spain. 3Research Professor at the Spanish National Research Council (CSIC). Madrid, Spain. 4President of Spanish Society of Community Nutrition (SENC). Bilbao, Spain. 5Professor of Preventive Medicine and Public Health. Director of Group of Nutrition...
2016: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
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