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https://www.readbyqxmd.com/read/28915772/hypermobility-in-adolescent-athletes-pain-functional-ability-quality-of-life-and-musculoskeletal-injuries
#1
Heidi Schmidt, Trine Lykke Pedersen, Tina Junge, Raoul Engelbert, Birgit Juul-Kristensen
Study Design Cross-sectional. Background Generalised joint hypermobility (GJH) may increase pain and likelihood of injuries and also decrease function and health-related quality of life (HRQoL) in elite level adolescent athletes. Objectives To assess the prevalence of GJH in elite level adolescent athletes, and to study the association of GJH with pain, function, HRQoL, and musculoskeletal injuries. Methods A total of 132 elite level adolescent athletes (36 males; 96 females), mean (SD) age 14.0 (0.9) years, participated (n=22 ballet dancers, n=57 teamgym gymnasts, n=53 team handball players)...
September 15, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28912742/perception-action-and-cognition-of-football-referees-in-extreme-temperatures-impact-on-decision-performance
#2
Nadia Gaoua, Rita F de Oliveira, Steve Hunter
Different professional domains require high levels of physical performance alongside fast and accurate decision-making. Construction workers, police officers, firefighters, elite sports men and women, the military and emergency medical professionals are often exposed to hostile environments with limited options for behavioral coping strategies. In this (mini) review we use football refereeing as an example to discuss the combined effect of intense physical activity and extreme temperatures on decision-making and suggest an explicative model...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28912654/reduced-spanish-version-of-participation-motives-questionnaire-for-exercise-and-sport-psychometric-properties-social-sport-differences
#3
María Del Pilar Vílchez, Cristina De Francisco
Understanding the motives that influence physical activity participation is important in order to orientate physical activity promotion and increase physical activity levels of practice of the population. Although many instruments been created and validated to measure motives to perform physical activity, one of the most frequently used scales during years is the Participation of Motives Questionnaire (PMQ) by Gill et al. (1983). Unfortunately, despite being so used and translated into many languages, there is no psychometric support for some factors about due to a low internal consistency...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28912649/does-live-high-train-low-and-high-hypoxic-training-alter-running-mechanics-in-elite-team-sport-players
#4
Olivier Girard, Grégoire P Millet, Jean-Benoit Morin, Franck Brocherie
This study aimed to investigate if "Live High-Train Low (and High)" hypoxic training alters constant-velocity running mechanics. While residing under normobaric hypoxia (≥14 h·d(-1); FiO2 14.5-14.2%) for 14 days, twenty field hockey players performed, in addition to their usual training in normoxia, six sessions (4 × 5 × 5-s maximal sprints; 25 s passive recovery; 5 min rest) under either normobaric hypoxia (FiO2 ~14.5%, n = 9) or normoxia (FiO2 20.9%, n = 11). Before and immediately after the intervention, their running pattern was assessed at 10 and 15 km·h(-1) as well as during six 30-s runs at ~20 km·h(-1) with 30-s passive recovery on an instrumented motorised treadmill...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28904935/evaluation-of-dietary-intakes-body-composition-and-cardiometabolic-parameters-in-adolescent-team-sports-elite-athletes-a-cross-sectional-study
#5
Javad Hosseinzadeh, Zahra Maghsoudi, Behnood Abbasi, Pooya Daneshvar, Atefeh Hojjati, Reza Ghiasvand
BACKGROUND: Nutritional intake is an important issue in adolescent athletes. Proper athletes' performance is a multifactorial outcome of good training, body composition, and nutritional status. The aim of the present study was to assess nutritional status, body composition, and cardiometabolic factors in adolescent elite athlete's province of Isfahan, Iran. MATERIALS AND METHODS: In this cross-sectional study, 100 adolescent elite athletes from volleyball, basketball, and soccer teams were selected for the study...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28902120/competition-intensity-and-fatigue-in-elite-fencing
#6
Anthony N Turner, Liam Kilduff, Geoff Marshall, James Phillips, Angelo Noto, Conor Buttigieg, Marcela Gondek, Frank Hills, Lygeri Dimitriou
As yet, no studies have characterised fencing competitions. Therefore in elite male foilists and across two competitions, we investigated their countermovement jump (CMJ) height, testosterone (T), cortisol (C), alpha-amylase (AA), immunoglobulin A (IgA), heart rate (HR), blood lactate (BL) and rating of perceived exertion (RPE). Average (± SD) scores for RPE, BL and HR (average, max and percentage of time ≥ 80% HRmax) were highest in the knockout bouts compared to poules (8.5 ± 1.3 vs. 5.7 ± 1.3, 3.6 ± 1...
September 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28901201/sex-differences-in-balance-among-alpine-ski-racers-cross-sectional-age-comparisons
#7
Christian Raschner, Carolin Hildebrandt, Johanna Mohr, Lisa Müller
Although balance is a key ability in the strength demands of alpine ski racing, affecting both performance and injury prevention, few studies have examined balance or related sex differences among still-maturing athletes. In this 10-year study, we investigated cross-sectional balance performances at different age periods of a representative sample of over 500 11-18-year-old elite skiers of both genders. Participants performed balance tests using the MFT S3-Check. Left-right and forward-backward movements were used to calculate sensory and symmetry balance scores, which were both incorporated into a stability score...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28895619/symptoms-of-common-mental-disorders-in-professional-rugby-an-international-observational-descriptive-study
#8
Vincent Gouttebarge, Phil Hopley, Gino Kerkhoffs, Evert Verhagen, Wayne Viljoen, Paul Wylleman, Mike I Lambert
The aim of the study was to determine the prevalence of symptoms of common mental disorders among professional rugby players across countries. A cross-sectional analysis of the baseline questionnaires from an ongoing prospective cohort study was conducted. Nine national players' associations and three rugby unions distributed questionnaires based on validated scales for assessing symptoms of common mental disorders. Among the whole study sample (N=990; overall response rate of 28%), prevalence (4-week) of symptoms of common mental disorders ranged from 15% for adverse alcohol use to 30% for anxiety/depression...
September 11, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28894685/return-to-play-in-elite-contact-athletes-after-anterior-cervical-discectomy-and-fusion-a-meta-analysis
#9
Steven J McAnany, Samuel Overley, Steven Andelman, Diana C Patterson, Samuel K Cho, Sheeraz Qureshi, Wellington K Hsu, Andrew C Hecht
STUDY DESIGN: Systematic literature review and meta-analysis of studies published in English language. OBJECTIVE: Return to play after anterior cervical discectomy and fusion (ACDF) in contact athletes remains a controversial topic with no consensus opinion in the literature. Additional information is needed to properly advise and treat this population of patients. This study is a meta-analysis assessing return to competitive contact sports after undergoing an ACDF...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28886473/strategies-for-injury-prevention-in-brazilian-football-perceptions-of-physiotherapists-and-practices-of-premier-league-teams
#10
Maurício Couto Meurer, Marcelo Faria Silva, Bruno Manfredini Baroni
OBJECTIVES: To describe the physiotherapists perceptions and the current practices for injury prevention in elite football (soccer) clubs in Brazil. DESIGN: Cross-sectional study. SETTING: Group of Science in Sports & Exercise, Federal University of Healthy Sciences of Porto Alegre (Brazil). PARTICIPANTS: 16 of the 20 football clubs involved in the Brazilian premier league 2015. MAIN OUTCOME MEASURES: Physiotherapists answered a structured questionnaire...
July 25, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28880783/competitive-balance-trends-in-elite-table-tennis-the-olympic-games-and-world-championships-1988-2016
#11
Jinming Zheng, Taeyeon Oh, Seungmo Kim, Geoff Dickson, Veerle De Bosscher
Competitive balance is important because it enhances outcome uncertainty and therefore it promotes spectator interest, and encourages government investment in a sport. This article analyses the distribution of gold medals, medals, medal points and top eight points amongst nations in table tennis from 1988 to 2016 at the Olympic Games and the World Championships respectively. A normalised version of the Herfindahl-Hirschman Index and a coefficient of variation are calculated for each nation's share of these performance indicators...
September 7, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28873025/analysis-of-head-impacts-during-sub-elite-hurling-practice-sessions
#12
D O'Sullivan, M Roe, C Blake
The reported incidence of head and neck injuries in hurling is 0.12 per 1000 hours, but no previous research has quantified head impact characteristics in this sport. Here, a wireless accelerometer and gyroscope captured head impacts, in 20 senior club level hurling players. Peak linear and rotational acceleration and impact location were recorded during three hurling training sessions, each player participating once. A mean of 27.9 impacts (linear acceleration >10g) per player, per session were recorded; 1314 impacts during a total exposure time of 247 minutes...
September 5, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28872408/healing-response-of-a-structural-hamstring-injury-perfusion-imaging-8-weeks-follow-up
#13
Marion Kellermann, Christoph Lutter, Thilo Hotfiel
CONTEXT: Hamstring injuries are frequently observed in various sports disciplines both in elite and recreational sport. OBJECTIVE: To quantify intramuscular tissue perfusion via contrast-enhanced ultrasound in the acute phase and during the healing of a structural muscle injury confirmed by a high-resolution MRI. DESIGN: Case study. SETTING: Laboratory environment. PATIENT: 32-year-old wakeboarder (height 176 cm, body weight 76 kg, BMI 24...
September 5, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28872385/new-records-in-human-power
#14
Thomas Haugen, Gøran Paulsen, Stephen Seiler, Øyvind Sandbakk
Maximal aerobic and anaerobic power are crucial performance determinants in most sports disciplines. Numerous studies have published power data from elite athletes over the years, particularly in runners, cyclists, rowers and cross-country skiers. In this invited review, we define the current "world records" in human upper limits of aerobic and anaerobic power. Currently, V̇O2max values of ~7.5 and 7.0 L·min(-1) in male cross-country (XC) skiers and rowers, respectively, and/or ~90 ml·kg(-1)·min(-1) in XC skiers, cyclists and runners can be described as upper human limits for aerobic power...
September 5, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28871847/single-nucleotide-polymorphisms-in-carnosinase-genes-cndp1-and-cndp2-are-associated-with-power-athletic-status
#15
João Paulo Limongi França Guilherme, Antonio Herbert Lancha Junior
Carnosine (β-alanyl-L-histidine), abundantly found in skeletal muscle, plays an important role during exercise, especially for high-intensity contractions. Variability in muscle carnosine content between individuals exists and may also be explained by different genetic bases, although no study has addressed the association of polymorphisms in genes related to carnosine metabolism in athletes. This study aimed to investigate the frequency of single nucleotide polymorphisms (SNPs) in the carnosinase genes (CNDP1 and CNDP2) in a large Brazilian cohort of athletes and non-athletes...
September 5, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28862921/sex-differences-in-elite-performance-track-and-field-competition-from-1983-to-2015
#16
Jonathan Ospina Betancurt, Maria S Zakynthinaki, Maria Jose Martinez-Pariño, Carlos Cordente Martinez, Carmen Rodríguez Fernández
The purpose of this study was to assess the veracity of the Court of Arbitration for Sport's assertion that sex-differences in athletic performance in elite-standard track and field competition is of the order of 10-12%. Exponential curves were fitted to the data of selected track and field events of the finals of all IAAF World Championships and Olympic Games from 1983 to 2016. For each curve, the coefficient of determination R(2) was calculated, in combination the corresponding 95% confidence intervals for the curve constants...
September 1, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28855568/plasma-biomarker-proteins-for-detection-of-human-growth-hormone-administration-in-athletes
#17
Sock-Hwee Tan, Albert Lee, Dana Pascovici, Natasha Care, Vita Birzniece, Ken Ho, Mark P Molloy, Alamgir Khan
Human growth hormone (GH) is a naturally occurring hormone secreted by the pituitary gland with anabolic and growth-promoting activities. Since an increased availability of recombinant GH (rGH) for the treatment of GH-deficient patients, GH has been abused in sports and it is prohibited. "GH-isoform" and "biomarkers" tests are currently available for detection of GH abuse in sports, however both methods suffer from shortcomings. Here, we report on a proteomic approach to search for novel protein biomarkers associated with rGH administration in non-elite athletes...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28852337/injuries-in-collegiate-wrestlers-at-an-elite-division-i-ncaa-wrestling-program-an-epidemiological-study
#18
Jesse E Otero, Christopher M Graves, Matthew J Bollier
BACKGROUND: Injury is common in the sport of wrestling. More than 6000 athletes compete in NCAA wrestling yearly. Despite this popularity, little is known about the epidemiology of wrestlers' injuries and factors affecting return to competition. We hypothesized that patterns of injury and associated factors influence return to participation. METHODS: Retrospective database review of one Division I NCAA wrestling program over nine seasons (2002 to 2011). RESULTS: From 2002 to 2011, 125 wrestlers were varsity participants at a single NCAA Division I program...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28842101/navicular-stress-fracture-outcomes-in-athletes-analysis-of-62-injuries
#19
Amol Saxena, Shontal A Behan, Dallas L Valerio, Dominick L Frosch
The optimal treatment modalities for navicular stress fractures in athletes is currently unknown for this season-ending injury. The present study evaluated factors that might be significant and affect healing outcomes, specifically focusing on the return to activity (RTA) time and a decreased desired activity (DDA) after treatment in athletes. Such considerations included previous navicular stress fractures, patient demographic data and type of sport, and initiation time of treatment. The data from 59 patients with 62 fractures were prospectively analyzed from May 2005 through July 2016...
September 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28837900/-which-pass-is-better-novel-approaches-to-assess-passing-effectiveness-in-elite-soccer
#20
Robert Rein, Dominik Raabe, Daniel Memmert
Passing behaviour is a key property of successful performance in team sports. Previous investigations however have mainly focused on notational measurements like total passing frequencies which provide little information about what actually constitutes successful passing behaviour. Consequently, this has hampered the transfer of research findings into applied settings. Here we present two novel approaches to assess passing effectiveness in elite soccer by evaluating their effects on majority situations and space control in front of the goal...
August 21, 2017: Human Movement Science
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