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https://www.readbyqxmd.com/read/29769831/improvement-of-functional-ankle-properties-following-supplementation-with-specific-collagen-peptides-in-athletes-with-chronic-ankle-instability
#1
Patrick Dressler, Dominic Gehring, Denise Zdzieblik, Steffen Oesser, Albert Gollhofer, Daniel König
Following an initial ankle sprain it is not unlikely that chronic ankle instability (CAI) will develop. CAI is associated with impaired perceived functional and mechanical properties of the ligaments. Nutritional supplementation with collagen peptides has been shown to improve the functional and mechanical properties of the connective tissue. The purpose of this study was to investigate the effectiveness of specific collagen peptide supplementation (SCP) to improve ankle stability in athletes with CAI. 50 male and female athletes with CAI completed a randomized, double-blinded and placebo-controlled study with a daily oral administration of either 5 g SCP or 5 g placebo (Maltodextrin) over a period of six months...
June 2018: Journal of Sports Science & Medicine
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
#2
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
#3
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/29757054/pre-season-body-composition-adaptations-in-elite-caucasian-and-polynesian-rugby-union-athletes
#4
Adam J Zemski, Shelley E Keating, Elizabeth M Broad, Damian J March, Karen Hind, Gary J Slater
During pre-season training, rugby union (RU) athletes endeavour to enhance physical performance characteristics that are aligned with on-field success. Specific physique traits are associated with performance, therefore body composition assessment is routinely undertaken in elite environments. This study aimed to quantify pre-season physique changes in elite RU athletes with unique morphology and divergent ethnicity. Twenty-two Caucasian and Polynesian professional RU athletes received dual-energy X-ray absorptiometry (DXA) assessments at the beginning and conclusion of an 11-week pre-season...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29757051/weight-regain-but-not-weight-loss-is-related-to-competitive-success-in-real-life-mixed-martial-arts-competition
#5
Victor Silveira Coswig, Bianca Miarka, Daniel Alvarez Pires, Levy Mendes da Silva, Charles Bartel, Fabrício Boscolo Del Vecchio
We aimed to describe the nutritional and behavioural strategies for rapid weight loss (RWL), investigate the effects of RWL and weight regain (WRG) in winners and losers and verify mood state and technical-tactical/time-motion parameters in Mixed Martial Arts (MMA). The sample consisted of MMA athletes after a single real match and was separated into two groups: Winners (n=8, age: 25.4±6.1yo., height: 173.9±0.2cm, habitual body mass (BM): 89.9±17.3kg) and Losers (n=7, age: 24.4±6.8yo., height: 178.4±0...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29757047/development-and-implementation-of-a-nutrition-knowledge-questionnaire-for-ultra-endurance-athletes
#6
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
#7
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
#8
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
#9
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
#10
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/29670754/student-experiences-with-traffic-light-labels-at-college-cafeterias-a-mixed-methods-study
#11
M W Seward, J P Block, A Chatterjee
Objective: To assess student perceptions of traffic-light labels (TLLs) in college cafeterias. Design: Cross-sectional, mixed-methods study. Setting: One northeastern US college. Participants: A total of 1,294 survey respondents; 57 focus group participants. Interventions: Seven-week traffic-light labelling (green = 'nutrient-rich', yellow = 'less nutrient-rich', red = 'more nutrient-rich choice in green or yellow') intervention at two college cafeterias...
April 2018: Obesity Science & Practice
https://www.readbyqxmd.com/read/29628417/alaska-mountain-wilderness-ski-classic-alterations-in-caloric-expenditure-and-body-composition
#12
Michelle M Johannsen, Kenneth J Shin, Karolina Priebe, Robert H Coker
INTRODUCTION: The Alaska Mountain Wilderness Ski Classic is a self-supported ultramarathon cross-country skiing event that traverses one of the mountain ranges of Alaska each winter. Unique aspects of this event challenge athletes with a significant amount of physical and mental stress while in the chronically cold conditions of the Arctic. Assessment of energy requirements or body composition has never been performed during this event. The objective of the study was to evaluate the influence of the 2016 Alaska Mountain Wilderness Ski Classic on caloric expenditure and body composition...
April 5, 2018: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/29627089/key-nutritional-strategies-to-optimize-performance-in-para-athletes
#13
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/29621580/use-of-nutritional-supplements-contaminated-with-banned-doping-substances-by-recreational-adolescent-athletes-in-athens-greece
#14
Konstantinos Tsarouhas, Nassia Kioukia-Fougia, Petros Papalexis, Aristidis Tsatsakis, Dimitrios Kouretas, Flora Bacopoulou, Christina Tsitsimpikou
Although the use of nutritional supplements by adult athletes has been extensively studied, information on supplements consumption by adolescent athletes is still limited. The present study reports on the use of nutritional supplements contaminated with banned doping substances among 170 recreational adolescent athletes from eleven, randomly selected, gym centres, in Athens, Greece. Nutritional supplements consumption was reported by almost 60% of the study population, with proteins/amino acids and vitamins being the most popular...
April 2, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29589768/ioc-consensus-statement-dietary-supplements-and-the-high-performance-athlete
#15
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 28, 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
#16
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
#17
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 26, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29566543/beetroot-based-gel-supplementation-improves-handgrip-strength-forearm-muscle-o2-saturation-but-not-exercise-tolerance-and-blood-volume-in-jiu-jitsu-athletes
#18
Gustavo Vieira de Oliveira, Luiz Nascimento, Mônica Volino-Souza, Jacilene Mesquita, Thiago Alvares
The ergogenic effect of beetroot on the exercise performance of trained cyclists, runners, kayakers, and swimmers has been demonstrated. However, whether or not beetroot supplementation presents a beneficial effect on the exercise performance of jiu-jitsu athletes (JJA) remains inconclusive. Therefore, present study assessed the effect of beetroot-based gel (BG) supplementation on maximal voluntary contraction (MVC), exercise time until fatigue (ETF), muscle O2 saturation (SmO2), blood volume (tHb), and plasma nitrate and lactate in response to handgrip isotonic exercise (HIE) in JJA...
March 22, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29556158/calorie-restriction-regime-enhances-physical-performance-of-trained-athletes
#19
Victoria Pons, Joan Riera, Xavier Capó, Miquel Martorell, Antoni Sureda, Josep A Tur, Franchek Drobnic, Antoni Pons
Background: Caloric restriction induces mitochondrial biogenesis and improves physical fitness in rodents. We aimed to provide evidence of how caloric restriction affects the body composition and physical performance of trained athletes and to evaluate the possible impact of an every-other-day feeding diet on nutritional deficiencies of micronutrients and essential fatty acids. Methods: The study was performed with 12 healthy male athletes by carrying out a 33% caloric restriction with respect to their usual diet...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29553034/nitrate-supplementation-improves-physical-performance-specifically-in-non-athletes-during-prolonged-open-ended-tests-a-systematic-review-and-meta-analysis
#20
Helton O Campos, Lucas R Drummond, Quezia T Rodrigues, Frederico S M Machado, Washington Pires, Samuel P Wanner, Cândido C Coimbra
Nitrate (NO3 -) is an ergogenic nutritional supplement that is widely used to improve physical performance. However, the effectiveness of NO3 - supplementation has not been systematically investigated in individuals with different physical fitness levels. The present study analysed whether different fitness levels (non-athletes v. athletes or classification of performance levels), duration of the test used to measure performance (short v. long duration) and the test protocol (time trials v. open-ended tests v...
March 2018: British Journal of Nutrition
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