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https://www.readbyqxmd.com/read/28435337/treatment-strategies-for-the-female-athlete-triad-in-the-adolescent-athlete-current-perspectives
#1
REVIEW
Jill Thein-Nissenbaum, Erin Hammer
Since the passage of Title IX in 1972, female sports participation has dramatically increased. The benefits of physical activity, including decreased risk for heart disease and diabetes as well as improved body image and self-esteem, far outweigh the risks. However, a select population of adolescent and young adult females may experience symptoms related to the female athlete triad (Triad), which refers to the interrelatedness of energy availability, menstrual function, and bone mineral density (BMD). These conditions often manifest clinically as disordered eating behaviors, menstrual irregularity, and stress fractures; an individual may suffer from 1 or all of the Triad components simultaneously...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28429998/the-efficacy-of-a-pre-workout-vegan-supplement-on-high-intensity-cycling-performance-in-healthy-college-aged-males
#2
Gabrielle Gallien, David Bellar, Greggory R Davis
There is a limited supply of sport nutrition supplements currently available for vegan or vegetarian athletes. In addition, the efficacy of a vegan or vegetarian pre-workout supplement that does not contain any processed ingredients or stimulants is currently unknown. The purpose of the current study was to examine the effects of an unprocessed vegan pre-workout supplement on high-intensity cycling performance. Participants completed three separate cycling trials following the consumption of a vegan pre-workout supplement, an isocaloric processed supplement, or a zero-calorie placebo supplement...
April 21, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28387575/nutritional-considerations-for-bouldering
#3
Edward J Smith, Ryan Storey, Mayur K Ranchordas
Bouldering competitions are held up to International level and governed by the International Federation of Sport Climbing. Bouldering has been selected to feature at the 2020 Olympic Games in Tokyo, however, physiological qualities and nutritional requirements to optimise performance remain inadequately defined due to large gaps in the literature. The primary goals of training include optimising the capacity of the anaerobic energy systems and developing sport-specific strength, with emphasis on the isometric function of the forearm flexors responsible for grip...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28368321/sport-nutrition-knowledge-behaviors-and-beliefs-of-high-school-soccer-players
#4
Melinda M Manore, Megan M Patton-Lopez, Yu Meng, Siew Sun Wong
For adolescent athletes (14-18 years), data on sport nutrition knowledge, behaviors and beliefs are limited, especially based on sex, race/ethnicity and socioeconomic status. High school soccer players (n = 535; 55% female; 51% White, 41% Latino; 41% National School Lunch Program (NSLP) participants (80% Latino)) completed two questionnaires (demographic/health history and sport nutrition). The sport nutrition knowledge score was 45.6% with higher scores in NSLP-Whites vs. NSLP-Latinos (p < 0.01). Supplement knowledge differed by sex (16% lower in females; p = 0...
April 1, 2017: Nutrients
https://www.readbyqxmd.com/read/28349656/equine-performance-genes-and-the-future-of-doping-in-horseracing
#5
Tessa Wilkin, Anna Baoutina, Natasha Hamilton
A horse's success on the racetrack is determined by genetics, training and nutrition, and their translation into physical traits such as speed, endurance and muscle strength. Advances in genetic technologies are slowly explaining the roles of specific genes in equine performance, and offering new insights into the development of novel therapies for diseases and musculoskeletal injuries that cause early retirement of many racehorses. Gene therapy approaches may also soon provide new means to artificially enhance the physical performance of racehorses...
March 27, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28344459/applied-sports-nutrition-support-dietary-intake-and-body-composition-changes-of-a-female-athlete-completing-26-marathons-in-26-days-a-case-study
#6
Chris J McManus, Kelly A Murray, David A Parry
The aim of this case study is to describe the nutrition practices of a female recreational runner (VO2max 48.9 ml·kg(-1)·min(-1)) who completed 26 marathons (42.195 km) in 26 consecutive days. Information relating to the nutritional intake of female runners during multi-day endurance events is extremely limited, yet the number of people participating year-on-year continues to increase. This case study reports the nutrition intervention, dietary intake, body composition changes and performance in the lead-up and during the 26 days...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28344452/the-effects-of-a-sports-nutrition-education-intervention-on-nutritional-status-sport-nutrition-knowledge-body-composition-and-performance-during-off-season-training-in-ncaa-division-i-baseball-players
#7
Fabrício Eduardo Rossi, Andrew Landreth, Stacey Beam, Taylor Jones, Layne Norton, Jason Michael Cholewa
This study investigated the effects of a sport nutrition education intervention (SNEI) on dietary intake, knowledge, body composition, and performance in NCAA Division I baseball players. Resistance trained NCAA Division I baseball players (82.4 ± 8.2 kg; 1.83 ± 0.06 m; 13.7 ± 5 % body fat) participated in the study during 12 weeks of off-season training. Fifteen players volunteered for SNEI while 15 players matched for position served as controls (C) for body composition and performance. The nutrition intervention group (NI) received a 90 min SNEI encompassing energy intake (Kcal), carbohydrate (CHO), protein (PRO), fat, food sources, and hydration...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28332171/sport-and-male-sexuality
#8
REVIEW
P Sgrò, L Di Luigi
The relationships between sport and sexuality in males are of great social and clinical interest, because of sports and motor activities that highly promote social and sexual relationships. Even if few literature exist, two main questions should be taken into account: whether and how physical exercise and sport positively or negatively influence sexual health and behavior and/or whether and how sexual behavior may affect a sub-sequent sport performance. Physical exercise and sport per se can influence, positively or negatively, the hypothalamic-pituitary-testicular axis function and, consequently, the individual's reproductive and/or sexual health...
March 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28332111/practical-issues-in-evidence-based-use-of-performance-supplements-supplement-interactions-repeated-use-and-individual-responses
#9
REVIEW
Louise M Burke
Current sports nutrition guidelines recommend that athletes only take supplements following an evidence-based analysis of their value in supporting training outcomes or competition performance in their specific event. While there is sound evidence to support the use of a few performance supplements under specific scenarios (creatine, beta-alanine, bicarbonate, caffeine, nitrate/beetroot juice and, perhaps, phosphate), there is a lack of information around several issues needed to guide the practical use of these products in competitive sport...
March 2017: Sports Medicine
https://www.readbyqxmd.com/read/28321588/use-of-bioimpedianciometer-as-predictor-of-mountain-marathon-performance
#10
Vicente Javier Clemente-Suarez, Pantelis Theodoros Nikolaidis
This study aimed to examine the relation among body composition, training experience and race time during a mountain marathon. Body composition and training pre-race experience analyses were conducted previous to a mountain marathon in 52 male athletes. A significant correlation between race time and mountain marathon with chronological age, body fat mass, percentage of body fat (BF), level of abdominal obesity, sport experience and daily training volume was revealed. In addition, BF and athlete's chronological age were negatively associated with race performance...
May 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28318306/physical-education-and-sport
#11
Paul D Loprinzi, Bradley J Cardinal, Marita K Cardinal, Charles B Corbin
PURPOSE: The purpose of this study was to examine the associations between physical education (PE) and sports involvement with physical activity (PA), physical fitness, and beliefs about PA among a national sample of adolescents. SETTING: Data from the National Health and Nutrition Examination Survey National Youth Fitness Survey were used. PARTICIPANTS: A total of 459 adolescents aged 12 to 15 years. MEASURES: Adolescents self-reported engagement in the above parameters; muscular fitness objectively determined...
January 1, 2017: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/28316263/individualised-dietary-strategies-for-olympic-combat-sports-acute-weight-loss-recovery-and-competition-nutrition
#12
Reid Reale, Gary Slater, Louise M Burke
Olympic combat sports separate athletes into weight divisions, in an attempt to reduce size, strength, range and/or leverage disparities between competitors. Official weigh-ins are conducted anywhere from 3 and up to 24 h prior to competition ensuring athletes meet weight requirements (i.e. have 'made weight'). Fighters commonly aim to compete in weight divisions lower than their day-to-day weight, achieved via chronic and acute manipulations of body mass (BM). Although these manipulations may impair health and absolute performance, their strategic use can improve competitive success...
March 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28187143/the-relation-between-exercise-and-glaucoma-in-a-south-korean-population-based-sample
#13
Shuai-Chun Lin, Sophia Y Wang, Louis R Pasquale, Kuldev Singh, Shan C Lin
PURPOSE: To investigate the association between exercise and glaucoma in a South Korean population-based sample. DESIGN: Population-based, cross-sectional study. PARTICIPANTS: A total of 11,246 subjects, 40 years and older who underwent health care assessment as part of the 2008-2011 Korean National Health and Nutrition Examination Survey. METHODS: Variables regarding the duration (total minutes per week), frequency (days per week), and intensity of exercise (vigorous, moderate exercise and walking) as well as glaucoma prevalence were ascertained for 11,246 survey participants...
2017: PloS One
https://www.readbyqxmd.com/read/28181776/cardiovascular-adjustments-to-heat-stress-during-prolonged-exercise
#14
Luna Rizzo, Martin W Thompson
Prolonged effort in hot environments is increasing popular in extreme sports. The number of long distance athletes taking part in races in extremely warm condition, as in deserts, is larger than in the past and also the race distances are increased thus. The demanding for the heart function are higher than those challenged in the past only by few athletes and in easier conditions. This puts news challenges on the professional involved in these activities and there is a need to better understand how the cardiocirculatory system responses in these extreme environmental conditions...
February 8, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28150472/timing-optimal-dose-and-intake-duration-of-dietary-supplements-with-evidence-based-use-in-sports-nutrition
#15
REVIEW
Alireza Naderi, Erick P Oliveira, Tim N Ziegenfuss, MarkE T Willems
Purpose: The aim of the present narrative review was to consider the evidence on the timing, optimal dose and intake duration of the main dietary supplements β-alanine, nitrate, caffeine, creatine, sodium bicarbonate, carbohydrate and protein. Methods: This review article will focuses on timing, optimal dose and intake duration of main dietary supplements for consuming. Results: This paper reviewed the evidence to determine the optimal time, efficacy doses and intake duration for sports supplements verified by scientific evidence that report a performance enhancing effect in both situation of laboratory and training settings...
December 31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28149429/physiological-nutritional-and-performance-profiles-of-brazilian-jiu-jitsu-athletes
#16
Leonardo V Andreato, Jonatas Fs Santos, João Vdc Esteves, Valeria Lg Panissa, Ursula F Julio, Emerson Franchini
This study analysed the physiological, nutritional and performance profiles of athletes practicing Brazilian jiu-jitsu. To this end, 15 athletes that practiced Brazilian jiu-jitsu (aged: 28 ± 5 years; 8 brown belts and 7 black belts; training experience: 11 ± 4 years) underwent anthropometric measurements (body composition and somatotype), dietary evaluation (24 h recall) and physical fitness tests (movement time, dynamometer handgrip, kimono grip strength, vertical jump and sit-and-reach tests). The athletes had 12...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28120856/the-effect-of-l-arginine-supplementation-on-body-composition-and-performance-in-male-athletes-a-double-blinded-randomized-clinical-trial
#17
N Pahlavani, M H Entezari, M Nasiri, A Miri, M Rezaie, M Bagheri-Bidakhavidi, O Sadeghi
BACKGROUND/OBJECTIVE: Athletes used a lot of dietary supplements to achieve the more muscle mass and improve their athletic performance. The objective of this study was to investigate the effect of l-arginine supplementation on sport performance and body composition in male soccer players. SUBJECTS/METHODS: This double-blinded, randomized and placebo-controlled trial was conducted on 56 male soccer players, with age range of 16-35, who referred to sport clubs in Isfahan, Iran...
April 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28058459/-nutritional-supplements-in-sports-sense-nonsense-or-hazard
#18
Maria Kristina Parr, Sebastian Schmidtsdorff, Annette Sophie Kollmeier
The excessive sale of dietary supplements (DSs) has become a global multi-billion market as more and more people turn to DSs for a healthy lifestyle or for aesthetic reasons. DSs are also increasingly popular among athletes; 50-85% of recreational and 35-100% of competitive athletes report taking DSs, the latter more regularly. Unless pathological deficiencies are detected, the intake of DSs for recreational athletes is not recommended. While it may be advisable for competitive athletes to supplement their diet with certain macronutrients (proteins and carbohydrates), many micronutrients (vitamins, minerals) as well as allegedly performance enhancing DSs may only show minimal impact under specific conditions and for certain sports...
January 5, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28050921/influence-of-dietary-acid-load-on-exercise-performance
#19
Catherine Applegate, Mackenzie Mueller, Krystle E Zuniga
Diet composition can affect systemic pH and acid-base regulation, which may in turn influence exercise performance. An acidic environment in the muscle impairs performance and contributes to fatigue; therefore, current trends in sports nutrition place importance on maximizing the alkalinity of the body with ergogenic aids and dietary strategies. This review examines the evidence on the effects of dietary manipulations on acid load and exercise performance. Ten studies that investigated the effect of high versus low dietary acid loads on athletic performance generally identified that low dietary acid loads increased plasma pH, but did not consistently improve exercise performance at maximal or submaximal exercise intensities...
January 4, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28010854/a-tale-of-two-runners-a-case-report-of-athletes-experiences-with-eating-disorders-in%C3%A2-college
#20
Paula A Quatromoni
Athletes are at higher risk than the general population for eating disorders, and risk is heightened for athletes in thin-build sports, including track. Collegiate athletes are particularly vulnerable to disordered eating when the transition from home to the college environment adds to the stress of performance pressures and the high demands of the sport environment. Male and female athletes who develop eating disorders share some common characteristics, yet their experiences can be quite different, in part as a consequence of their sex and how eating disorders develop, and are recognized, acknowledged, and treated, within the culture of sports...
January 2017: Journal of the Academy of Nutrition and Dietetics
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