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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/28430140/-eat-as-if-you-could-save-the-planet-and-win-sustainability-integration-into-nutrition-for-exercise-and-sport
#2
Nanna Meyer, Alba Reguant-Closa
Today's industrial food production contributes significantly to environmental degradation. Meat production accounts for the largest impact, including greenhouse gas emissions, land and water use. While food production and consumption are important aspects when addressing climate change, this article focuses predominantly on dietary change that promotes both health for planet and people with focus on athletes. Healthy, sustainable eating recommendations begin to appear in various governmental guidelines. However, there remains resistance to the suggested reductions in meat consumption...
April 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28429998/the-efficacy-of-a-pre-workout-vegan-supplement-on-high-intensity-cycling-performance-in-healthy-college-aged-males
#3
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/28387576/dietary-micro-periodization-in-elite-female-and-male-runners-and-race-walkers-during-a-block-of-high-intensity-pre-competition-training
#4
Ida Aliisa Heikura, Louise Mary Burke, Antti A Mero, Arja Leena Tuulia Uusitalo, Trent Stellingwerff
We investigated one week of dietary micro-periodization in elite female (n=23) and male (n=15) runners and race-walkers by examining the frequency of training sessions and recovery periods conducted with recommended carbohydrate (CHO) and protein availability. Food and training diaries were recorded in relation to HARD (intense or >90min sessions; KEY) versus RECOVERY days (other-than KEY sessions; EASY). The targets for amount and timing of CHO and protein around KEY sessions were based on current nutrition recommendations...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28387575/nutritional-considerations-for-bouldering
#5
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
#6
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/28365828/health-integrity-and-doping-in-sports-for-children-and-young-adults-a-resolution-of-the-european-academy-of-paediatrics
#7
Francis P Crawley, Peter Hoyer, Artur Mazur, Liesbeth Siderius, Stefan Grosek, Tom Stiris, David Neubauer
The European Academy of Paediatrics (EAP) is dedicated to promoting healthy lifestyles for children from birth into young adulthood. Physical exercise and leisure are essential to the development of healthy bodies, strong minds, and social skills. All children, without regard to their physical or mental capacities, should be provided with the time, the leadership, the facilities, and the equipment needed to exercise through sports while enjoying playing, even competing, in an environment appropriate to their capacities and aspirations...
April 1, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28349656/equine-performance-genes-and-the-future-of-doping-in-horseracing
#8
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
#9
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/28338358/a-mismatch-between-athlete-practice-and-current-sports-nutrition-guidelines-among-elite-female-and-male-middle-and-long-distance-athletes
#10
Ida Aliisa Heikura, Trent Stellingwerff, Antti A Mero, Arja Leena Tuulia Uusitalo, Louise Mary Burke
Contemporary nutrition guidelines promote a variety of periodized and time-sensitive recommendations, but current information regarding the knowledge and practice of these strategies among world-class athletes is limited. The aim of this study was to investigate this theme by implementing a questionnaire on dietary periodization practices in national/international level female (n=27) and male (n=21) middle- and long-distance runners/race-walkers. The questionnaire aimed to gain information on between and within-day dietary choices, as well as timing of pre- and post-training meals and practices of training with low or high carbohydrate (CHO) availability...
March 24, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28332111/practical-issues-in-evidence-based-use-of-performance-supplements-supplement-interactions-repeated-use-and-individual-responses
#11
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
#12
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/28316263/individualised-dietary-strategies-for-olympic-combat-sports-acute-weight-loss-recovery-and-competition-nutrition
#13
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/28212284/micronutrient-intakes-in-553-dutch-elite-and-sub-elite-athletes-prevalence-of-low-and-high-intakes-in-users-and-non-users-of-nutritional-supplements
#14
Floris Wardenaar, Naomi Brinkmans, Ingrid Ceelen, Bo Van Rooij, Marco Mensink, Renger Witkamp, Jeanne De Vries
This study investigated whether athletes meet micronutrient recommendations and whether the adequacy of their intake is related to the use of dietary supplements, sport nutrition products or a combination. Micronutrient intakes of 553 Dutch (sub-) elite athletes were assessed using web-based 24-h dietary recalls with accompanying nutritional supplement questionnaires. In the majority of both users and non-users of dietary supplements, vitamin D intake was below the estimated average requirement (AR) if supplements were not included in the analysis...
February 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28208581/macronutrient-intakes-in-553-dutch-elite-and-sub-elite-endurance-team-and-strength-athletes-does-intake-differ-between-sport-disciplines
#15
Floris Wardenaar, Naomi Brinkmans, Ingrid Ceelen, Bo Van Rooij, Marco Mensink, Renger Witkamp, Jeanne De Vries
Web-based 24-h dietary recalls and questionnaires were obtained from 553 Dutch well-trained athletes. The total energy and macronutrient intake was compared between discipline-categories (endurance, team, and strength) within gender, and dietary inadequacy, i.e., too low or high intakes, according to selected recommendations and guidelines, was evaluated by applying a probability approach. On average, 2.83 days per person were reported with a mean energy intake of 2566-2985 kcal and 1997-2457 kcal per day, for men and women, respectively...
February 10, 2017: Nutrients
https://www.readbyqxmd.com/read/28207969/multiple-factors-explain-injury-risk-in-adolescent-elite-athletes-applying-a-biopsychosocial-perspective
#16
P von Rosen, A Frohm, A Kottorp, C Fridén, A Heijne
Many risk factors for injury are presented in the literature, few of those are however consistent and the majority is associated with adult and not adolescent elite athletes. The aim was to identify risk factors for injury in adolescent elite athletes, by applying a biopsychosocial approach. A total of 496 adolescent elite athletes (age range 15-19), participating in 16 different sports, were monitored repeatedly over 52 weeks using a valid questionnaire about injuries, training exposure, sleep, stress, nutrition, and competence-based self-esteem...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28181776/cardiovascular-adjustments-to-heat-stress-during-prolonged-exercise
#17
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/28149429/physiological-nutritional-and-performance-profiles-of-brazilian-jiu-jitsu-athletes
#18
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/28145991/use-of-dietary-supplements-among-gym-trainees-in-tanta-city-egypt
#19
Ehab A Abo Ali, Hanan H Elgamal
BACKGROUND: The use of dietary supplements has greatly increased in the past few years. Few studies described the prevalence of supplement use among gym trainees. The practices of most of the athletes and gym trainees in Egypt remain undocumented. This study aimed to assess the prevalence of dietary supplement use among gyms trainees in Tanta city, Egypt. PARTICIPANTS AND METHODS: A cross-sectional comparative study was carried out on 450 gym trainees aged more than or equal to 20 years in Tanta city, Egypt...
December 2016: Journal of the Egyptian Public Health Association
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
#20
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
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