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https://www.readbyqxmd.com/read/29910353/perceptions-and-determinants-of-eating-for-health-and-performance-in-high-level-male-adolescent-rugby-union-players
#1
Emily G Stokes, Roger Hughes, David M Shaw, Helen T O'Connor, Kathryn L Beck
Sports nutrition recommendations provide guidance on dietary strategies to optimise sports performance. However, research indicates that young athletes often find it difficult to follow these guidelines in practice. Limited research exists on the determinants that influence adherence to sports nutrition guidelines. This study aimed to explore the perceptions and determinants of eating for health and performance in high-level male adolescent rugby union players. Determinants were explored using semi-structured individual interviews in New Zealand high-level male rugby union players ( n = 20, 16⁻18 years)...
May 28, 2018: Sports
https://www.readbyqxmd.com/read/29894642/acute-modulation-in-dietary-behavior-following-glycogen-depletion-and-post-exercise-supplementation-in-trained-cyclists
#2
Hsuan-Yu Wan, Jonathon L Stickford, Emily Dawkins, Alice K Lindeman, Joel M Stager
We investigated the influence of immediate post-exercise dietary supplementation on the subsequent food consumption pattern and endurance exercise performance in physically trained individuals. On two occasions, trained male cyclists performed a glycogen-depleting exercise bout followed by a 2-hour nutritional supplementation period, 28 hours of free-living recovery, and a subsequent 40-km cycling time trial. During the 2-hour post-exercise supplementation, subjects consumed equal volumes of reduced-fat chocolate milk (CM) or a sports beverage (SB) in a single-blind, randomized design...
June 12, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29889151/energy-availability-macronutrient-intake-and-nutritional-supplementation-for-improving-exercise-performance-in-endurance-athletes
#3
Gretchen A Casazza, Ashley P Tovar, Christine E Richardson, Angela N Cortez, Brian A Davis
Endurance athletes use nutritional guidelines and supplements to improve exercise performance and recovery. However, use is not always based on scientific evidence of improved performance, which type of athlete would benefit most, or the optimal dose and timing of a particular supplement. Health professionals that give advice to athletes need to target their recommendations on the energy systems and muscle fiber types used for the athlete's sporting event, the goal of the training block, the time of the competitive season, and the characteristics and food preferences of the individual athlete...
June 2018: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29865179/wave-ripples-for-change-obesity-two-year-intervention-in-high-school-soccer-players-process-evaluation-best-practices-and-youth-engagement
#4
Yu Meng, Siew Sun Wong, Melinda M Manore, Mēgan Patton-López
This paper reports the process data on program fidelity, best practices for intervention implementation, youth and coach engagement, and youth application of knowledge and skills for the two-year WAVE~Ripples for Change (WAVE) obesity prevention intervention program focused on healthy eating, physical activity, and life skills with high school (HS) soccer players aged 14⁻19 years. Internal (staff: n = 7; volunteers: n = 27) and external (youth: n = 100; coaches: n = 9) stakeholders were interviewed/ surveyed...
June 1, 2018: Nutrients
https://www.readbyqxmd.com/read/29848161/an-integrated-multifactorial-approach-to-periodization-for-optimal-performance-in-individual-and-team-sports
#5
REVIEW
Iñigo Mujika, Shona Halson, Louise M Burke, Gloria Balagué, Damian Farrow
Sports periodization has traditionally focused on the exercise aspect of athletic preparation, while neglecting the integration of other elements that can impact an athlete's readiness for peak competition performances. Integrated periodization allows the coordinated inclusion of multiple training components best suited for a given training phase into an athlete's program. The aim of this article is to review the available evidence underpinning integrated periodization, focusing on exercise training, recovery, nutrition, psychological skills, and skill acquisition as key factors by which athletic preparation can be periodized...
May 1, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29843124/fluid-intake-habits-in-type-1-diabetes-individuals-during-typical-training-bouts
#6
Alex Buoite Stella, Jane Yardley, Maria Pia Francescato, Shawnda A Morrison
BACKGROUND/AIMS: Hyperglycemia may influence the hydration status in diabetic individuals. During exercise, type 1 diabetes mellitus (T1DM) individuals may be challenged by a higher risk of dehydration due to a combination of fluid losses from sweat and increased urine output via glycosuria. So far, no study has characterised spontaneous fluid intake in T1DM individuals during active trainings. METHODS: A validated questionnaire was used to assess T1DM participants' diabetes therapy, sports characteristics and fluid intake during training; results were then compared to an age- and sport-matched sample of non-diabetic individuals...
May 29, 2018: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/29792776/prevalence-of-inadequate-immunity-to-measles-mumps-rubella-and-varicella-in-mlb-and-nba-athletes
#7
Justin J Conway, Brett G Toresdahl, Daphne I Ling, Nicole T Boniquit, Lisa R Callahan, James J Kinderknecht
BACKGROUND: Multiple outbreaks of vaccine-preventable viral diseases have occurred in professional sports in recent years. Currently, there is no established protocol for vaccination or immunity screening for professional athletes. HYPOTHESIS: There are significant differences in the prevalence of inadequate immunity dependent on age, sport, country of birth, and participation in collegiate sports. STUDY DESIGN: Cross-sectional cohort study...
May 1, 2018: Sports Health
https://www.readbyqxmd.com/read/29782463/gut-microbiota-probiotics-and-sport-from-clinical-evidence-to-agonistic-performance
#8
Marco Pane, Angela Amoruso, Francesca Deidda, Teresa Graziano, Serena Allesina, Luca Mogna
Human beings harbor clusters of bacteria in different parts of the body, such as the surface or the deep layers of the skin, the mouth, the lungs, the intestine, the vagina, and all the surfaces exposed to the outer world. The majority of microbes resides in the gut, have a weighty influence on human physiology and nutrition and are vital for human life. There is growing evidence showing that the gut microbiota plays important roles in the maturation of the immune system and the protection against some infectious agents...
May 18, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29766694/analysis-of-the-choice-of-food-products-and-the-energy-value-of-diets-of-female-middle-and-long-distance-runners-depending-on-the-self-assessment-of-their-nutritional-habits
#9
Dominika Głąbska, Marta Jusińska
Background: Properly balanced diet is especially important in the case of young athletes, as it influences not only their physical development, but also influences results obtained during trainings and competitions. Objective: The aim of the study was to assess the choice of food products and the energy value of diets of female middleand long-distance runners, depending on the self-assessment of their nutritional habits. Material and methods: The study was conducted in the group of 40 female middle- and long-distance runners, aged 15-25, who declared average diet (n=15, 37...
2018: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/29758507/recovery-practices-in-division-1-collegiate-athletes-in-north-america
#10
Andrew Murray, Hugh Fullagar, Anthony P Turner, John Sproule
OBJECTIVES: Establish current practice and attitudes towards recovery in a group of Division-1 Collegiate athletes from North America. DESIGN: A 16-item questionnaire was administered via custom software in an electronic format. PARTICIPANTS: 152 student athletes from a Division-1 Collegiate school across 3 sports (Basketball, American Football, Soccer). MAIN OUTCOME MEASURES: The approaches and attitudes to recovery in both training and competition...
May 8, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29757047/development-and-implementation-of-a-nutrition-knowledge-questionnaire-for-ultra-endurance-athletes
#11
Claire Blennerhassett, Lars R McNaughton, Lorcan Cronin, S Andy Sparks
The nutritional intake of ultra-endurance athletes is often poorly matched with the requirements of the sport. Nutrition knowledge is a mediating factor to food choice that could correct such imbalances. Therefore, the purpose of this study was to develop and validate a questionnaire to assess the nutrition knowledge of ultra-endurance athletes. Nutritional knowledge was assessed using a modified sports nutrition questionnaire (ULTRA-Q). Four independent assessors with specialist sports nutrition knowledge confirmed the content validity of the ULTRA-Q...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29734881/effect-of-ubiquinol-supplementation-on-biochemical-and-oxidative-stress-indexes-after-intense-exercise-in-young-athletes
#12
Patrick Orlando, Sonia Silvestri, Roberta Galeazzi, Roberto Antonicelli, Fabio Marcheggiani, Ilenia Cirilli, Tiziana Bacchetti, Luca Tiano
OBJECTIVES: Physical exercise significantly impacts the biochemistry of the organism. Ubiquinone is a key component of the mitochondrial respiratory chain and ubiquinol, its reduced and active form, is an emerging molecule in sport nutrition. The aim of this study was to evaluate the effect of ubiquinol supplementation on biochemical and oxidative stress indexes after an intense bout of exercise. METHODS: 21 male young athletes (26 + 5 years of age) were randomized in two groups according to a double blind cross-over study, either supplemented with ubiquinol (200 mg/day) or placebo for 1 month...
December 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29722586/australian-football-athletes-lack-awareness-of-current-sport-nutrition-guidelines
#13
Gina Louise Trakman, Adrienne Forsyth, Kane Middleton, Russell Hoye, Sarah Jenner, Stephen Keenan, Regina Belski
Sports nutrition is an evolving field, but there is a lack of data on Australian athletes' knowledge of current sports nutrition guidelines. Additionally, several tools used to assess nutrition knowledge (NK) have not undergone adequate validation. The purpose of this study was to assess and compare the sports NK of elite and non-elite Australian Football (AF) athletes using a newly validated questionnaire-The Nutrition for Sport Knowledge Questionnaire (NSKQ). Elite AF players (n=46) were recruited directly from their club dietitian and non-elite AF players (n =53) were invited to participate via email from their club president or secretary...
May 3, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29722578/a-review-of-prevention-diagnosis-and-treatment-of-relative-energy-deficiency-in-sport-red-s-in-artistic-synchronized-swimming
#14
Sherry Robertson, Margo Mountjoy
The syndrome Relative Energy Deficiency in Sport (RED-S) is a clinical entity characterized by low energy availability (LEA), which can negatively affect the health and performance of both male and female athletes. The underlying mechanism of RED-S is an inadequacy of dietary energy to support optimal health and performance. This syndrome refers to impaired physiological function including metabolic rate, menstrual function, bone health, immunity, protein synthesis, and cardiovascular health, with psychological consequences which can either precede (through restrictive dietary habits) or result from RED-S...
May 3, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29713248/development-and-validation-of-a-brief-general-and-sports-nutrition-knowledge-questionnaire-and-assessment-of-athletes-nutrition-knowledge
#15
Gina Louise Trakman, Adrienne Forsyth, Russell Hoye, Regina Belski
Background: The Nutrition for Sport Knowledge Questionnaire (NSKQ) is an 89-item, valid and reliable measure of sports nutrition knowledge (SNK). It takes 25 min to complete and has been subject to low completion and response rates. The aim of this study was to develop an abridged version of the NSKQ (A-NSKQ) and compare response rates, completion rates and NK scores of the NSKQ and A-NSKQ. Methods: Rasch analysis was used for the questionnaire validation. The sample ( n  = 181) was the same sample that was used in the validation of the full-length NSKQ...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29627089/key-nutritional-strategies-to-optimize-performance-in-para-athletes
#16
REVIEW
Jacque Scaramella, Nuwanee Kirihennedige, Elizabeth Broad
Para athletes are a high-risk population for inadequate dietary intake leading to insufficiencies in nutrients important to athletic performance. This is partly due to minimal support and resources, especially in sport nutrition education, combined with limited prior nutrition knowledge and risks associated with different impairment types. Inadequate energy, carbohydrate, protein, iron, and vitamin D status are of particular concern in Para athletes. Assessment of these key nutrients, along with sport nutrition education, is needed to empower Para athletes with the knowledge to understand their individual nutrition needs and maximize athletic performance...
May 2018: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/29589768/ioc-consensus-statement-dietary-supplements-and-the-high-performance-athlete
#17
Ronald J Maughan, Louise M Burke, Jiri Dvorak, D Enette Larson-Meyer, Peter Peeling, Stuart M Phillips, Eric S Rawson, Neil P Walsh, Ina Garthe, Hans Geyer, Romain Meeusen, Luc van Loon, Susan M Shirreffs, Lawrence L Spriet, Mark Stuart, Alan Vernec, Kevin Currell, Vidya M Ali, Richard G M Budgett, Arne Ljungqvist, Margo Mountjoy, Yannis Pitsiladis, Torbjørn Soligard, Uğur Erdener, Lars Engebretsen
Nutrition usually makes a small but potentially valuable contribution to successful performance in elite athletes, and dietary supplements can make a minor contribution to this nutrition program. Nonetheless, supplement use is widespread at all levels of sport. Products described as supplements target different issues, including the management of micronutrient deficiencies, supply of convenient forms of energy and macronutrients, and provision of direct benefits to performance or indirect benefits such as supporting intense training regimens...
March 1, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29589411/dietetic-nutritional-physical-and-physiological-recovery-methods-post-competition-in-team-sports-a-review
#18
Nicolas Terrados, Juan Mielgo-Ayuso, Anne Delextrat, Sergej M Ostojic, Julio Calleja-González
INTRODUCTION: To a proper recovery, is absolutely necessary to know that athletes with enhanced recovery after maximal exercise are likely to perform better in sports. Recovery strategies are commonly used in team sports despite limited scientific evidence to support their effectiveness in facilitating optimal recovery and the players spend a much greater proportion of their time recovering than they do in training. EVIDENCE ACQUISITION: According to authors, some studies investigated the effect of recovery strategies on physical performance in team sports, lack of experimental studies about the real origin of the fatigue, certify the need for further study this phenomenon...
March 27, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29580114/athletes-and-supplements-prevalence-and-perspectives
#19
REVIEW
Ina Garthe, Ronald J Maughan
In elite sport, where opponents are evenly matched, small factors can determine the outcome of sporting contests. Not all athletes know the value of making wise nutrition choices, but anything that might give a competitive edge, including dietary supplements, can seem attractive. Between 40% and 100% of athletes typically use supplements, depending on the type of sport, level of competition, and the definition of supplements. However, unless the athlete has a nutrient deficiency, supplementation may not improve performance and may have a detrimental effect on both performance and health...
March 1, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29544062/ingestion-of-carbohydrate-or-carbohydrate-plus-protein-does-not-enhance-performance-during-endurance-exercise-a-randomized-cross-over-placebo-controlled-clinical-trial
#20
Débora Finger, Fábio Juner Lanferdini, Juliano Boufleur Farinha, Clarissa Müller Brusco, Lucas Helal, Francesco Pinto Boeno, Eduardo Lusa Cadore, Ronei Silveira Pinto
INTRODUCTION: Protein (PRO) combined with a carbohydrate (CHO) beverage may have an ergogenic effect on endurance performance. However, evidence regarding its efficacy on similar conditions to athletes' race day is still lacking. OBJECTIVE: To compare the effect of three different nutritional supplementation strategies on performance and muscle recovery in a duathlon protocol. METHODS: , 13 male athletes (29.7 ± 7.7 years) participated in three simulated Olympic-distance duathlons under three different, randomly assigned, supplementation regimens: carbohydrate drink (CHO, 75 g); isocaloric CHO plus protein drink (CHO+PRO, 60...
March 15, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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