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Athlete, performance, nutrition

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https://www.readbyqxmd.com/read/29345174/case-study-using-contemporary-behaviour-change-science-to-design-and-implement-an-effective-nutritional-intervention-within-professional-rugby-league
#1
Nessan Costello, Jim McKenna, Louise Sutton, Kevin Deighton, Ben Jones
Designing and implementing successful dietary intervention is integral to the role of sport nutrition professionals as they attempt to positively change the dietary behaviour of athletes. High-performance sport is a time-pressured environment where immediate results can often supersede pursuit of the most effective evidence-based practice. However, efficacious dietary intervention necessitates comprehensive, systematic and theoretical behavioural design and implementation if the habitual dietary behaviours of athletes are to be positively changed...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29315892/effects-of-fasted-vs-fed-state-exercise-on-performance-and-post-exercise-metabolism-a-systematic-review-meta-analysis
#2
REVIEW
Tom P Aird, Robert W Davies, Brian P Carson
The effects of nutrition on exercise metabolism and performance remains an important topic among sports scientists, clinical, and athletic populations. Recently, fasted exercise has garnered interest as a beneficial stimulus which induces superior metabolic adaptations to fed exercise in key peripheral tissues. Conversely, pre-exercise feeding augments exercise performance compared with fasting conditions. Given these seemingly divergent effects on performance and metabolism, an appraisal of the literature is warranted...
January 6, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29313445/body-composition-metabolism-sleep-psychological-and-eating-patterns-of-overtraining-syndrome-results-of-the-eros-study-eros-profile
#3
Flavio A Cadegiani, Claudio E Kater
Overtraining syndrome (OTS) is caused by an imbalance between training, nutrition and resting, and leads to decreased performance and fatigue; however, the precise underlying triggers of OTS remain unclear. This study investigated the body composition, metabolism, eating, sleeping patterns and mood states among participants with OTS. Selected participants were divided into OTS-affected athletes (OTS, n = 14), healthy athletes (ATL, n = 25), and healthy non-physically active controls (NCS, n = 12). Compared to ATL, OTS showed decreased sleep quality (p = 0...
January 9, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29311764/effects-of-beetroot-juice-supplementation-on-intermittent-high-intensity-exercise-efforts
#4
REVIEW
Raúl Domínguez, José Luis Maté-Muñoz, Eduardo Cuenca, Pablo García-Fernández, Fernando Mata-Ordoñez, María Carmen Lozano-Estevan, Pablo Veiga-Herreros, Sandro Fernandes da Silva, Manuel Vicente Garnacho-Castaño
Beetroot juice contains high levels of inorganic nitrate (NO3-) and its intake has proved effective at increasing blood nitric oxide (NO) concentrations. Given the effects of NO in promoting vasodilation and blood flow with beneficial impacts on muscle contraction, several studies have detected an ergogenic effect of beetroot juice supplementation on exercise efforts with high oxidative energy metabolism demands. However, only a scarce yet growing number of investigations have sought to assess the effects of this supplement on performance at high-intensity exercise...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29280410/iron-balance-and-iron-supplementation-for-the-female-athlete-a-practical-approach
#5
Charles R Pedlar, Carlo Brugnara, Georgie Bruinvels, Richard Burden
Maintaining a positive iron balance is essential for female athletes to avoid the effects of iron deficiency and anaemia and to maintain or improve performance. A major function of iron is in the production of the oxygen and carbon dioxide carrying molecule, haemoglobin, via erythropoiesis. Iron balance is under the control of a number of factors including the peptide hormone hepcidin, dietary iron intake and absorption, environmental stressors (e.g. altitude), exercise, menstrual blood loss and genetics. Menstruating females, particularly those with heavy menstrual bleeding are at an elevated risk of iron deficiency...
December 27, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/29207495/validity-of-dietary-assessment-in-athletes-a-systematic-review
#6
REVIEW
Louise Capling, Kathryn L Beck, Janelle A Gifford, Gary Slater, Victoria M Flood, Helen O'Connor
Dietary assessment methods that are recognized as appropriate for the general population are usually applied in a similar manner to athletes, despite the knowledge that sport-specific factors can complicate assessment and impact accuracy in unique ways. As dietary assessment methods are used extensively within the field of sports nutrition, there is concern the validity of methodologies have not undergone more rigorous evaluation in this unique population sub-group. The purpose of this systematic review was to compare two or more methods of dietary assessment, including dietary intake measured against biomarkers or reference measures of energy expenditure, in athletes...
December 2, 2017: Nutrients
https://www.readbyqxmd.com/read/29198093/-strenuous-and-prolonged-exercise-and-upper-respiratory-tract-infection-treatment-or-threat
#7
REVIEW
Danit Atias-Varon, Yuval Heled
Prolonged and strenuous exercise may lead to changes in the immune system function and to temporary suppression in defense against pathogens. These changes likely increase the risk of those engaging in prolonged and strenuous physical activity to develop upper respiratory tract infection and to reduce the level of performance. On the other hand, it appears that moderate physical activity reduces the risk of upper respiratory tract infection. Various populations, such as professional athletes and soldiers in combat units, who engage in daily strenuous exercise, may therefore be a high risk group...
November 2017: Harefuah
https://www.readbyqxmd.com/read/29182403/long-distance-triathletes-intentions-to-manipulate-energy-and-macronutrient-intake-over-a-training-macrocycle
#8
Hani Kopetschny, David Rowlands, David Popovich, Jasmine Thomson
This study explored the information sources long-distance triathletes used to inform their training and nutrition plans, and evaluated these plans over a training macrocycle. Seventy-four long-distance triathletes completed the online survey. Coaches were the most popular training information source (69%), whereas non-professional sources (internet 65%, other athletes 53%) were more popular than nutritionists (29%) for nutrition information. Attributes valued most in an information source were: source prior personal experience, individualised advice, breadth of knowledge, and credibility...
November 28, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29173121/fueling-for-performance
#9
Jeffrey R Bytomski
CONTEXT: Proper nutrition is crucial for an athlete to optimize his or her performance for training and competition. Athletes should be able to meet their dietary needs through eating a wide variety of whole food sources. EVIDENCE ACQUISITION: PubMed was searched for relevant articles published from 1980 to 2016. STUDY DESIGN: Clinical review. LEVEL OF EVIDENCE: Level 4. RESULTS: An athlete should have both daily and activity-specific goals for obtaining the fuel necessary for successful training...
November 1, 2017: Sports Health
https://www.readbyqxmd.com/read/29160809/evaluation-of-dietary-intakes-and-supplement-use-in-paralympic-athletes
#10
Robyn F Madden, Jane Shearer, Jill A Parnell
Dietary intakes and supplement use in Paralympic athletes remains largely unexplored, and specialized recommendations are lacking. The aim of this study was to evaluate nutrient intakes and supplement use in high-performance athletes with physical disabilities using three-day food records and a validated dietary supplement use questionnaire. A secondary aim examined gender differences in nutrient and supplement intakes. Male (n = 18) and female (n = 22) athletes were recruited from nine Paralympic sports through sporting organizations, coaches, and social media...
November 21, 2017: Nutrients
https://www.readbyqxmd.com/read/29158725/nutritional-supplement-practices-of-professional-ugandan-athletes-a-cross-sectional-study
#11
Haruna Muwonge, Robert Zavuga, Peninnah Aligawesa Kabenge, Timothy Makubuya
Background: The use of nutritional supplements (NS) places athletes at great risk for inadvertent doping. Due to the paucity of data on supplement use, this study aimed to determine the proportion of Ugandan athletes using nutritional supplements and to investigate the athletes' motivation to use these supplements. Methods: A cross-sectional study was conducted in which an interviewer-administered questionnaire was used to collect data from 359 professional athletes participating in individual (boxing, cycling, athletics) and team (basketball, rugby, football, netball, and volleyball) sports...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29156929/-role-of-the-egg-in-the-diet-of-athletes-and-physically-active-people
#12
Ana M López Sobaler, Aránzazu Aparicio Vizuete, Rosa M Ortega
The practice of sport and medium-high intensity exercise increases the needs of energy and nutrients. Proper nutrition is very important for reaching the maximum performance, reducing the risk of injury, and ensuring the best recovery. It must also ensure the achievement of optimum nutritional status and prevent health problems at the present and in the future time. Eggs are a very nutritious food that can help athletes to achieve a correct diet. It contains proteins of high quality and bioavailability, a profile of fatty acids very favorable from the cardiovascular point of view, and vitamins and minerals involved in energy and protein metabolism, in defense against oxidative stress and inflammation, in cell growth and tissue repair...
October 15, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29134049/the-prevalence-and-covariates-of-potential-doping-behavior-in-kickboxing-analysis-among-high-level-athletes
#13
Damir Sekulic, Natasa Zenic, Sime Versic, Dora Maric, Goran Gabrilo, Mario Jelicic
The official reports on doping behavior in kickboxing are alarming, but there have been no empirical studies that examined this problem directly. The aim of this study was to investigate the prevalence, gender differences and covariates of potential-doping-behavior, in kickboxing athletes. A total of 130 high-level kickboxing athletes (92 males, 21.37 ± 4.83 years of age, 8.39 ± 5.73 years of training experience; 38 women, 20.31 ± 2.94 years of age; 9.84 ± 4.74 years of training experience) completed questionnaires to study covariates and potential-doping behavior...
October 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29117450/nutrition-strategies-before-and-during-ultra-endurance-event-a-significant-gap-between-science-and-practice
#14
Soyzana K Papadopoulou, Eleni E Xyla, Spyridon Methenitis, Konstantinos G Feidantsis, Yiannis Kotsis, Ioannis G Pagkalos, Maria N Hassapidou
The purpose of the present study was to investigate and assess the nutritional practices of open-water swimmers, during the preparation period and the competition, as well as their implications on performance and anthropometric parameters according to their age. Twenty-four (n=24) men open-water swimmers, twelve young (26.3±4.9yrs) and twelve older athletes (45.8±9.7yrs), participated in the present study. Nutritional behavior - intake-energy consumption, and anthropometric characteristics were evaluated prior to the Toroneos Gulf crossing (26Km)...
November 8, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29098657/post-exercise-ingestion-of-carbohydrate-protein-and-water-a-systematic-review-and-meta-analysis-for-effects-on-subsequent-athletic-performance
#15
REVIEW
Danielle McCartney, Ben Desbrow, Christopher Irwin
BACKGROUND: Athletes may complete consecutive exercise sessions with limited recovery time between bouts (e.g. ≤ 4 h). Nutritional strategies that optimise post-exercise recovery in these situations are therefore important. OBJECTIVE: This two-part review investigated the effect of consuming carbohydrate (CHO) and protein with water (W) following exercise on subsequent athletic (endurance/anaerobic exercise) performance. DATA SOURCES: Studies were identified by searching the online databases SPORTDiscus, PubMed, Web of Science and Scopus...
November 2, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29091479/case-study-the-effect-of-nutritional-intervention-on-body-composition-and-physical-performance-of-a-female-squash-player
#16
Christopher Rosimus
The body composition of a squash player may affect athletic performance as carrying excessive body fat may increase injury risk and impair agility and speed. This case study outlines the effect of a nutritional intervention on body composition, vitamin D status and physical performance of a female squash player. A structured, 6-week moderate energy-restricted diet (70-78% of Estimated Energy Requirement (EER) of 2300 kcal was implemented with weekly support. A daily supplement of vitamin D, omega 3 fatty acids, and a multivitamin/multimineral and whey protein was used...
November 1, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29037118/pre-season-dietary-intake-of-professional-soccer-players
#17
Raquel Raizel, Allan da Mata Godois, Audrey Yule Coqueiro, Fabrício Azevedo Voltarelli, Carlos Alexandre Fett, Julio Tirapegui, Fabricio Cesar de Paula Ravagnani, Christianne de Faria Coelho-Ravagnani
BACKGROUND: Despite the well-documented importance of nutrition in optimizing performance and health, the dietary intake of soccer players has attracted little attention. AIM: We aimed to assess the pre-season dietary intake of professional soccer players and its adequacy in macro and micronutrients. METHODS: The pre-season dietary intake of 19 male athletes was assessed using a semi-structured 3-day food record. To determine dietary adequacy and excess, energy and macronutrient intake were compared with the Brazilian dietary reference values for athletes, and micronutrients were compared with the Estimated Average Requirement - EAR (minimum recommendation) and Tolerable Upper Intake Level - UL (maximum recommendation)...
January 1, 2017: Nutrition and Health
https://www.readbyqxmd.com/read/29035603/competition-level-not-associated-with-diet-quality-in-marching-artists
#18
Colleen R McConnell, Alyssa McPherson, Kathleen Woolf
Marching artists are a unique group of athletes whose performance can be influenced by nutrition. Because physical demands are thought to be moderate to high, adequate energy and a variety of nutrient-dense foods are needed. The purpose of this study was to examine diet quality, physical activity, and eating behavior of marching artists across elite and non-elite competition levels. This cross-sectional analysis used the validated National Cancer Institute Diet History Questionnaire II, International Physical Activity Questionnaire, and Eating Behavior Patterns Questionnaire...
October 16, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28975667/development-of-a-nutrition-knowledge-questionnaire-for-young-endurance-athletes-and-their-coaches
#19
M Heikkilä, R Valve, M Lehtovirta, M Fogelholm
Both athletes and coaches should have adequate nutrition knowledge to understand the importance of diet on athletic performance, recovery, and health. Nutrition knowledge can be assessed reliably only by validated knowledge questionnaires. The aim of this study was to develop a reliable and valid questionnaire for assessing the nutrition knowledge of young endurance athletes and their coaches. The questionnaire was developed with an expert panel and pilot tested by athletes, coaches, and students. Content, face, and construct validities both as test-retest reliability and internal consistency reliability were ensured when the current questionnaire was developed...
October 4, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28966376/current-concepts-in-sports-injury-rehabilitation
#20
Himmat Dhillon, Sidak Dhilllon, Mandeep S Dhillon
In the modern era, rehabilitation after sports injury has become a domain for specialists, and its evolution has necessarily brought together the sports physiotherapist, the sports physician, and the orthopedic surgeon. The changing profile of sports related injury, as well as limited availability of facilities for rehabilitation in many areas of India, is a matter of concern. Elite sportspersons have some protection, but the average athlete is often left to fend for himself. Key factors in successful sports injury rehabilitation protocols are the application of modern rehabilitation protocols under appropriate supervision, appropriate and well timed surgical interventions, and judicious and need based use of pharmaceutical agents...
September 2017: Indian Journal of Orthopaedics
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