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https://www.readbyqxmd.com/read/28748643/protein-supplements-and-adolescent-athletes-a-pilot-study-investigating-the-risk-knowledge-motivations-and-prevalence-of-use
#1
Gavin Whitehouse, Tanya Lawlis
AIM: Protein-based sports supplements are among the more common types of nutrition supplements consumed by athletes; however, there is currently limited data investigating the knowledge, motivations and occurrence of use among the adolescent population (13-18 years). This pilot study looks to obtain initial data regarding the use of protein supplements in this population. METHODS: This study investigates the understanding and occurrence of protein supplement use in 87 adolescent athletes based in an Australian capital city who compete in a variety of sports...
July 26, 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28746243/heavy-barbell-hip-thrusts-do-not-effect-sprint-performance-an-8-week-randomized-controlled-study
#2
Chris Bishop, Natasha Cassone, Paul Jarvis, Anthony Turner, Shyam Chavda, Mike Edwards
The purpose of this study was to examine the effects of an 8-week barbell hip thrust strength training program on sprint performance. Twenty-one collegiate athletes (15 males and 6 females) were randomly assigned to either an intervention (n = 11, age 27.36 ± 3.17 years, height 169.55 ± 10.38 cm, weight 72.7± 18 kg) or control group (n = 10, age 27.2 ± 3.36 years, height 176.2 ± 7.94 cm, weight 76.39 ± 11.47 kg). 1RM hip thrust, 40m sprint time, and individual 10m split timings: 0-10, 10-20, 20-30, 30-40m, were the measured variables; these recorded at both the baseline and post testing time points...
July 24, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28746058/rapid-number-naming-and-quantitative-eye-movements-may-reflect-contact-sport-exposure-in-a-collegiate-ice-hockey-cohort
#3
Lisena Hasanaj, Sujata P Thawani, Nikki Webb, Julia D Drattell, Liliana Serrano, Rachel C Nolan, Jenelle Raynowska, Todd E Hudson, John-Ross Rizzo, Weiwei Dai, Bryan McComb, Judith D Goldberg, Janet C Rucker, Steven L Galetta, Laura J Balcer
BACKGROUND: The King-Devick (K-D) test of rapid number naming is a reliable visual performance measure that is a sensitive sideline indicator of concussion when time scores worsen (lengthen) from preseason baseline. Within cohorts of youth athletes <18 years old, baseline K-D times become faster with increasing age. We determined the relation of rapid number-naming time scores on the K-D test to electronic measurements of saccade performance during preseason baseline assessments in a collegiate ice hockey team cohort...
July 25, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28745473/does-the-aerobic-threshold-correlate-with-the-maximal-fat-oxidation-rate-in-short-stage-treadmill-tests
#4
Ratko Peric, Marco Meucci, Pitre C Bourdon, Zoran Nikolovski
BACKGROUND: The aim of this study was to identify the exercise intensity that elicited the highest rate of fat utilization (FATmax) and to assess its relationship with the aerobic threshold (AeT) in male athletes. We hypothesized existence of high correlation of these two parameters when a short-staged graded treadmill test with AeT identified through breath-by-breath gas exchange analysis was used. METHODS: Fifty-six trained male athletes (age 25.6 ± 3.4 y, height 197...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745470/effects-of-taurine-on-markers-of-muscle-damage-inflammatory-response-and-physical-performance-in-triathletes
#5
Bryan S Martinez Galan, Flavia Giolo de Carvalho, Priscila Carvalho Santos, Ronaldo Bucken Gobbi, Carlos Kalva-Filho, Marcelo Papoti, Adelino Sanchez Silva, Ellen C Freitas
BACKGROUND: The practice of prolonged exercise with high intensity, as seen in triathlon training, can cause physiological imbalances that might result in muscle fatigue, muscle damage and changes in systemic inflammatory response, thus reduce the athletes physical performance, therefore, both adequate total caloric and macronutrient intake also the use of a specific ergogenic aid, as taurine supplementation would be an alternative to prevent inflammation and muscle damage. In order to verify the effects of 8 weeks of taurine and chocolate milk supplementation, markers of muscle damage, inflammation, and aerobic capacity were quantified in triathletes...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745464/elite-athletes-and-pubertal-delay
#6
Karina Kapczuk
Intensive physical training and participation in competitive sports during childhood and early adolescence may affect athletes' pubertal development. On the other hand, pubertal timing, early or late, may impact on an athlete selection for a particular sport. Genetic predisposition, training load, nutritional status and psychological stress determine athletes' pubertal timing. Athletes that practice esthetic sports, especially gymnasts, are predisposed to a delay in pubertal development. The growing evidence indicates that energy deficiency, not a systemic training per se, plays a crucial role in the pathogenesis of functional hypothalamic hypogonadism in female athletes...
October 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28743304/running-on-a-high-parkrun-and-personal-well-being
#7
Anne Grunseit, Justin Richards, Dafna Merom
BACKGROUND: Sporting or physical recreation event participation can affect different domains of mental and social well-being if sufficiently frequent, yet previous research has focused mainly on the physical health benefits of single-location or infrequent mass-participation events. We examined overall and domain specific subjective well-being of adult participants of "parkrun", a weekly, community-based, highly accessible and widespread running event. METHODS: Data were from a national online survey of 865 adult Australian parkrunners...
July 25, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28742910/clinicopathological-evaluation-of-chronic-traumatic-encephalopathy-in-players-of-american-football
#8
Jesse Mez, Daniel H Daneshvar, Patrick T Kiernan, Bobak Abdolmohammadi, Victor E Alvarez, Bertrand R Huber, Michael L Alosco, Todd M Solomon, Christopher J Nowinski, Lisa McHale, Kerry A Cormier, Caroline A Kubilus, Brett M Martin, Lauren Murphy, Christine M Baugh, Phillip H Montenigro, Christine E Chaisson, Yorghos Tripodis, Neil W Kowall, Jennifer Weuve, Michael D McClean, Robert C Cantu, Lee E Goldstein, Douglas I Katz, Robert A Stern, Thor D Stein, Ann C McKee
Importance: Players of American football may be at increased risk of long-term neurological conditions, particularly chronic traumatic encephalopathy (CTE). Objective: To determine the neuropathological and clinical features of deceased football players with CTE. Design, Setting, and Participants: Case series of 202 football players whose brains were donated for research. Neuropathological evaluations and retrospective telephone clinical assessments (including head trauma history) with informants were performed blinded...
July 25, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28742608/epidemiology-of-injuries-in-women-s-lacrosse-implications-for-sport-level-and-sex-specific-injury-prevention-strategies
#9
Kim D Barber Foss, Ed Le Cara, Teri McCambridge, Richard Y Hinton, Adam Kushner, Gregory D Myer
OBJECTIVE: By the end of 2013, the United States had an estimated 278 000 female lacrosse players, with half of those participating at the youth level. The effects of the sport's rapid growth on injury rates have yet to be determined. The purpose of this clinical review is to synthesize the available published data on injuries that have occurred in the sport of women's lacrosse. Of particular interest was the risk of injury based on the level of play and position. DATA SOURCES: A comprehensive literature search was performed in PubMed, High Wire Press, SPORTDiscus, Google Scholar, and Ovid using the keywords "Lacrosse Injuries," "Epidemiology Lacrosse Injuries," "Lacrosse Injury," "Lacrosse," and "Injury...
July 21, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28740940/relevance-of-whole-body-vibration-exercise-in-sport-a-short-review-with-soccer-diver-and-combat-sport
#10
Danielle Soares Morel, Carla da Fontoura Dionello, Eloá Moreira-Marconi, Samuel Brandão-Sobrinho-Neto, Laisa Liane Paineiras-Domingos, Patrícia Lopes Souza, Danúbia da Cunha Sá-Caputo, Glenda Dias, Claudia Figueiredo, Roberto Carlos Resende Carmo, Patrícia de Castro Paiva, Cintia Renata Sousa-Gonçalves, Cristiane Ribeiro Kütter, Eliane de Oliveira Guedes-Aguiar, Ross Cloak, Mario Bernardo-Filho
BACKGROUND: Whole body vibration exercise (WBVE) has been used as a safe and accessible exercise and important reviews have been published about the use of this exercise to manage diseases and to improve physical conditions of athletes The aim of this paper is to highlight the relevance of WBVE to soccer players, divers and combat athletes. MATERIAL AND METHODS: This study was made through a systematic review of publications involving WBVE and the selected sports in two databases (Pubmed and PEDRo)...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28739836/psychological-impact-of-electrocardiogram-screening-in-national-collegiate-athletic-association-athletes
#11
Irfan M Asif, Scott Annett, Joseph A Ewing, Ramy Abdelfattah, Brittan Sutphin, Kyle Conley, Justin Rothmier, Kimberly G Harmon, Jonathan A Drezner
PURPOSE: Determine the psychological impact of false-positive ECG screening in National Collegiate Athletic Association (NCAA) athletes. METHODS: Athletes representing seven NCAA institutions received a standardised history, physical examination and ECG interpreted using the 2013 Seattle Criteria. Assessments of health attitudes, anxiety and impact of screening on sport were conducted using validated prescreen and postscreen measurements. RESULTS: 1192 student-athletes participated (55...
July 24, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28738856/acute-changes-in-blood-lipid-profiles-and-metabolic-risk-factors-in-collegiate-elite-taekwondo-athletes-after-short-term-de-training-a-prospective-insight-for-athletic-health-management
#12
Yu-Chi Sung, Yi-Hung Liao, Chung-Yu Chen, Yu-Liang Chen, Chun-Chung Chou
BACKGROUND: This study used a short-term de-training model to mimic the physiological weight changes during the early retirement stage in Taekwondo (TKD) athletes. This study investigates whether the negative changes in body composition, blood lipid profiles, and metabolic biomarkers occur in elite collegiate TKD athletes when experiencing a two-months de-training period. METHODS: Fourteen collegiate Division Ι elite TKD athletes (age: 21.1 ± 0.2 years, BMI: 22...
July 24, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28735552/a-prospective-study-on-the-effect-of-sport-specialization-on-lower-extremity-injury-rates-in-high-school-athletes
#13
Timothy A McGuine, Eric G Post, Scott J Hetzel, M Alison Brooks, Stephanie Trigsted, David R Bell
BACKGROUND: Sport specialization is associated with an increased risk of musculoskeletal lower extremity injuries (LEIs) in adolescent athletes presenting in clinical settings. However, sport specialization and the incidence of LEIs have not been investigated prospectively in a large population of adolescent athletes. PURPOSE: To determine if sport specialization was associated with an increased risk of LEIs in high school athletes. STUDY DESIGN: Cohort study; Level of evidence, 2...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28735282/a-systematic-review-of-criteria-used-to-define-recovery-from-sport-related-concussion-in-youth-athletes
#14
REVIEW
Mohammad Nadir Haider, John J Leddy, Sonja Pavlesen, Melissa Kluczynski, John G Baker, Jeffrey C Miecznikowski, Barry S Willer
OBJECTIVE: The Concussion in Sport Group guidelines recommend a multifaceted approach to help clinicians make return to sport decisions. The purpose of this study was to identify the most common multifaceted measures used to define clinical recovery from sport-related concussion in young athletes (high school and/or college level) and to summarise existing knowledge of criteria used to make return to sport decisions. DESIGN: Systematic review. DATA SOURCES: The PubMed (MEDLINE), SPORTDiscus and Embase electronic databases were searched from 1 January 2000 to 1 March 2017 by three independent reviewers...
July 22, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28735104/effect-of-limb-dominance-and-sex-on-neuromuscular-activation-patterns-in-athletes-under-12-performing-unanticipated-side-cuts
#15
Michael J Del Bel, Alana K Fairfax, Michelle L Jones, Kendal Steele, Scott C Landry
Non-contact ACL injuries are one of the most common injuries to the knee joint among adolescent/collegiate athletes, with sex and limb dominance being identified as risk factors. In children under 12years of age (U12), these injuries occur less often and there is no sex-bias present. This study set out to explore if sex and/or limb dominance differences exist in neuromuscular activations in U12 athletes. Thirty-four U12 males and females had six bilateral muscles analyzed during unanticipated side-cuts. Principal component analysis was performed, capturing differences in overall magnitudes and timing of peak magnitudes...
July 14, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28732177/inguinal-hernia-in-athletes-role-of-dynamic-ultrasound
#16
William Kelton Vasileff, Mikhail Nekhline, Patricia A Kolowich, Gary B Talpos, Willam R Eyler, Marnix van Holsbeeck
BACKGROUND: Inguinal hernia is a commonly encountered cause of pain in athletes. Because of the anatomic complexity, lack of standard imaging, and the dynamic condition, there is no unified opinion explaining its underlying pathology. HYPOTHESIS: Athletes with persistent groin pain would have a high prevalence of inguinal hernia with dynamic ultrasound, and herniorrhaphy would successfully return athletes to activity. STUDY DESIGN: Case-control study...
July 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28731980/running-performance-nationality-sex-and-age-in-the-10-km-half-marathon-marathon-and-the-100-km-ultramarathon-iaaf-1999-2015
#17
Pantelis T Nikolaidis, Vincent O Onywera, Beat Knechtle
Nikolaidis PT, Onywera VO, and Knechtle B. Running performance, nationality, sex, and age in the 10-km, half-marathon, marathon, and the 100-km ultramarathon IAAF 1999-2015. J Strength Cond Res 31(8): 2189-2207, 2017-The aim of this study was to examine the performance of the world's best runners in the 10-km, half-marathon, marathon, and 100-km races by age, sex, and nationality during 1999-2015, using data from the International Association of Athletics Federations (IAAF). A total of 38,895 runners (17,136 women and 21,759 men) were evaluated, with 2,594 (1,360 women and 1,234 men) in the 10-km; 11,595 (5,225 women and 6,370 men) in the half-marathon; 23,973 (10,208 women and 13,765 men) in the marathon; and 733 (343 women and 390 men) in 100-km events...
August 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28731886/collegiate-student-athletes-with-history-of-adhd-or-academic-difficulties-are-more-likely-to-produce-an-invalid-protocol-on-baseline-impact-testing
#18
Lisa Manderino, John Gunstad
OBJECTIVE: Attention deficit hyperactivity disorder (ADHD) and other academically-relevant diagnoses have been suggested as modifiers of neurocognitive testing in sport-related concussion, such as Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT). These preexisting conditions may suppress ImPACT scores to the extent that they are indistinguishable from low scores because of poor effort. The present study hypothesized that student athletes with history of ADHD or academic difficulties produce lower ImPACT composite scores and are more likely to produce invalid protocols than those without such conditions...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28730870/cardiac-autonomic-recovery-after-strength-exercise-in-lower-and-upper-limbs
#19
Naerton José Xavier Isidoro, Milana Drumond Ramos Santana, Vitor E Valenti, David M Garner, Luiz Carlos de Abreu
Introduction Strength exercises influence the cardiovascular system by promoting autonomic adjustments induced by the increased metabolic demand and consequent increase in local blood flow. However, it is unclear whether there are differences between upper and lower limbs. We aimedto evaluate recovery of cardiac autonomic modulation afterstrengthexercise in upper and lower limbs. Methods We analysed 29 healthy male subjects physically active but not professional athletes aged between 20 and 35 years old...
July 21, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28730749/impact-of-the-dynamic-and-static-component-of-the-sport-practiced-for-electrocardiogram-analysis-in-screening-athletes
#20
Nicolas Maillot, Charles Guenancia, Nobila V Yameogo, Aurélie Gudjoncik, Fabien Garnier, Luc Lorgis, Frédéric Chagué, Yves Cottin
BACKGROUND: To interpret the electrocardiogram (ECG) of athletes, the recommendations of the ESC and the Seattle criteria define type-1 peculiarities, those induced by training, and type-2, those not induced by training, to rule out cardiomyopathy. The specificity of the screening was improved by Sheikh who definied "Refined Criteria", which includes a group of intermediate peculiarities. The aim of our study was to investigate the influence of static and dynamic components on the prevalence of different types of abnormalities...
July 21, 2017: Scandinavian Journal of Medicine & Science in Sports
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