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https://www.readbyqxmd.com/read/29165733/impact-of-type-of-sport-gender-and-age-on-red-blood-cell-deformability-of-elite-athletes
#1
Fabian Tomschi, Wilhelm Bloch, Marijke Grau
Our objective was to detect possible differences in red blood cell (RBC) deformability of elite athletes performing different types of sports and being of different age and gender.182 athletes were included in this cross-sectional study. RBC deformability was measured using the laser-assisted optical rotational cell-analyzer. Maximal elongation index (EI max) and shear stress at half-maximum deformation (SS 1/2) were calculated. The ratio SS 1/2 /EI max (EI Ratio) was calculated with low values representing high RBC deformation...
November 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29164163/neurocognitive-deficits-of-concussed-adolescent-athletes-at-self-reported-symptom-resolution-in-the-zurich-guidelines-era
#2
Peter K Kriz, Rebekah Mannix, Alex M Taylor, Danielle Ruggieri, William P Meehan
Background: Previous studies have evaluated high school and collegiate athletes in the pre-Zurich guidelines era; whether adolescent athletes demonstrate similar neurocognitive decrements in the current concussion management era remains unclear. Purpose: To assess for the presence of neurocognitive deficits in adolescents with a sport-related concussion at the time of self-reported symptom resolution. Study Design: Cross-sectional study; Level of evidence, 3...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29163951/coronary-artery-anomalies-unusually-high-incidence-of-anomalies-with-a-malignant-course-in-an-asian-population
#3
Abdulaziz M Alkhulaifi, Nidheesh Chooriyil, Maryam Alkuwari, Abdelnasser N Ghareep, Cornelia Carr
Objectives: Coronary artery anomalies are uncommon, but important cardiac malformations, representing the second commonest cause of death in young athletes. Methods: We utilized computerized tomographic angiography to screen and precisely delineate coronary artery anomalies in patients with minimal cardiac symptoms. Results: During 3.5-year period, we performed 2888 computerized tomographic angiographies. A total of 33 (1.1%; 95% confidence interval = 0...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/29163219/neuromuscular-training-improves-lower-extremity-biomechanics-associated-with-knee-injury-during-landing-in-11-13-year-old-female-netball-athletes-a-randomized-control-study
#4
Amanda J Hopper, Erin E Haff, Christopher Joyce, Rhodri S Lloyd, G Gregory Haff
The purpose of this study was to examine the effects of a neuromuscular training (NMT) program on lower-extremity biomechanics in youth female netball athletes. The hypothesis was that significant improvements would be found in landing biomechanics of the lower-extremities, commonly associated with anterior cruciate ligament (ACL) injury, following NMT. Twenty-three athletes (age = 12.2 ± 0.9 years; height = 1.63 ± 0.08 m; mass = 51.8 ± 8.5 kg) completed two testing sessions separated by 7-weeks and were randomly assigned to either a experimental or control group...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29163016/session-rpe-method-for-training-load-monitoring-validity-ecological-usefulness-and-influencing-factors
#5
REVIEW
Monoem Haddad, Georgios Stylianides, Leo Djaoui, Alexandre Dellal, Karim Chamari
Purpose: The aim of this review is to (1) retrieve all data validating the Session-rating of perceived exertion (RPE)-method using various criteria, (2) highlight the rationale of this method and its ecological usefulness, and (3) describe factors that can alter RPE and users of this method should take into consideration. Method: Search engines such as SPORTDiscus, PubMed, and Google Scholar databases in the English language between 2001 and 2016 were consulted for the validity and usefulness of the session-RPE method...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29162768/coexistence-of-trunk-or-lower-extremity-pain-with-elbow-and-or-shoulder-pain-among-young-overhead-athletes-a-cross-sectional-study
#6
Takuya Sekiguchi, Yoshihiro Hagiwara, Haruki Momma, Masahiro Tsuchiya, Kaoru Kuroki, Kenji Kanazawa, Yutaka Yabe, Shinichiro Yoshida, Masashi Koide, Nobuyuki Itaya, Eiji Itoi, Ryoichi Nagatomi
Elbow or shoulder injuries are common in overhead sports. Because energy derived from the lower extremity passes through the trunk to the upper extremity in overhead motion, a break in such a kinetic chain could lead to arm injuries. However, there is only limited information about the role of the trunk and lower extremity support in preventing elbow or shoulder injuries. This study aimed to explore the association of trunk and lower extremity pain with elbow/shoulder pain among young overhead athletes. We conducted a cross-sectional study using self-reported questionnaires mailed to young athletes belonging to the Miyagi Amateur Sports Association...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29162458/electrophysiological-impact-of-multiple-concussions-in-asymptomatic-athletes-a-re-analysis-based-on-alpha-activity-during-a-visual-spatial-attention-task
#7
Samuel Guay, Louis De Beaumont, Brandi Lee Drisdelle, Jean-Marc Lina, Pierre Jolicoeur
Most EEG studies used event-related potentials to assess long-term and cumulative effects of sport-related concussions on brain activity. Time-frequency methods provide another approach that allows the detection of subtle shifts in types and patterns of brain oscillations. We sought to discover whether event-related alpha activity would be significantly affected in asymptomatic multi-concussed athletes. We measured the amplitude of alpha activity (8-12Hz) from the EEG recorded during a visual-spatial attention task to compare event-related alpha perturbations in 13 multi-concussed athletes and 14 age-equivalent, non-concussed teammates...
November 18, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29161758/young-athletes-health-knowledge-system-qualitative-analysis-of-health-learning-processes-in-adolescent-sportspersons
#8
Laura I Rodríguez-Serrano, Toomas Timpka, Joakim Ekberg, Örjan Dahlström, Jenny Jacobsson
Recognized side effects on health associated with sports participation in youth include overtraining, doping, and exposure to harassment and violence. Many of these effects originate in contexts where young athletes are beginning to make decisions about their sports practices on their own. This study set out to explore knowledge and reasoning about health among adolescent athletes and to describe how health knowledge management structures are associated with different social systems. Qualitative data were collected from focus groups involving 65 young Swedish athletes aged 16 to 17 years...
November 21, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29161335/shoulder-complaints-in-wheelchair-athletes-a-systematic-review
#9
Omar W Heyward, Riemer J K Vegter, Sonja de Groot, Lucas H V van der Woude
BACKGROUND: In recent years the popularity of disabled sports and competition among disabled athletes has grown considerably. With this rise in exposure of, and participation in wheelchair sports comes an increase in related stressors, including musculoskeletal load. External mechanical loading may increase the risk of shoulder complaints. The objective of this literature review was to 1) identify and describe the prevalence and/or incidence of shoulder complaints in wheelchair athletes in the literature, to 2) examine the factors and underlying mechanisms that could be potentially involved, and 3) provide some insights into the development of preventative measures...
2017: PloS One
https://www.readbyqxmd.com/read/29161094/the-effect-of-resistance-training-in-a-hypoxic-chamber-on-physical-performance-in-elite-rugby-athletes
#10
Brad Mayo, Cory Miles, Stacy Sims, Matthew Driller
Mayo, Brad, Cory Miles, Stacy Sims, and Matthew Driller. The effect of resistance training in a hypoxic chamber on physical performance in elite rugby athletes. High Alt Med Biol 00:000-000, 2017.-Limited research suggests that muscle adaptations may be enhanced through resistance training in a hypoxic environment. Seventeen professional rugby union athletes (age [mean ± SD], 24 ± 3 years; body mass, 98.7 ± 12.8 kg; and height, 188.9 ± 7.9 cm), performed 12 resistance training sessions over a 3-week period...
November 21, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29160411/spirometry-in-schoolchildren-for-field-studies-does-testing-on-different-days-change-the-result-of-the-exam
#11
Janaina Cristina Scalco, Rafaela Coelho Minsky, Camila Isabel Santos Schivinski
OBJECTIVE: To analyze if there is variation in the results of spirometry performed by healthy schoolchildren on different days. METHODS: Cross-sectional study with healthy schoolchildren aged 7 to 12 years old, in Florianópolis, Santa Catarina, Southern Brazil. Prepubescent children, non-athletes, born at full term, without cardiorespiratory, rheumatic, musculoskeletal, neurological and visual or hearing deficit were included. The child's health was assessed by a health questionnaire and by the survey International Study of Asthma and Allergies in Childhood...
November 13, 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/29159669/thyroid-hormones-and-commonly-cited-symptoms-of-overtraining-in-collegiate-female-endurance-runners
#12
Justin X Nicoll, Disa L Hatfield, Kathleen J Melanson, Christopher S Nasin
PURPOSE: Overtraining syndrome (OTS) is reported in endurance sports. Thyroid hormones (TH) regulate metabolism, mood, and energy production, and may play a role in OTS of endurance athletes. The purpose of this study was to investigate relationships in TH and symptoms of OTS in track and field endurance runners (ER). METHODS: Sixteen female track and field middle distance (MD; n = 9; age: 20.2 ± 1.5 years; ht: 167.86 ± 5.04 cm; body-mass: 57.97 ± 5...
November 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29158958/the-functional-movement-screen-fms%C3%A2-in-elite-young-soccer-players-between-14-and-20-years-composite-score-individual-test-scores-and-asymmetries
#13
Vanessa Bernardes Marques, Thales Menezes Medeiros, Felipe de Souza Stigger, Fábio Yuzo Nakamura, Bruno Manfredini Baroni
Background: The Functional Movement Screen (FMS™) is a widely used seven-test battery used by practitioners working in sport medicine. The FMS™ composite score (sum of seven tests) in soccer athletes from different competitive levels has been well explored in literature, but the specific movement deficits presented by young high competitive level players remains unclear. Purpose: The aim of the present study was to provide a detailed description of the performance of elite young soccer players (age 14-20 years) on the FMS™ testing battery...
November 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29158621/loaded-and-unloaded-jump-performance-of-top-level-volleyball-players-from-different-age-categories
#14
Katia Kitamura, Lucas Adriano Pereira, Ronaldo Kobal, Cesar Cavinato Cal Abad, Ronaldo Finotti, Fábio Yuzo Nakamura, Irineu Loturco
The aim of this study was to investigate the differences in loaded and unloaded jump performances between different age categories of top-level volleyball players from the same club. Forty-three volleyball players were divided into four age groups: under-17, under-19, under-21 and professional. Vertical jumping height for squat jump (SJ), countermovement jump (CMJ) and CMJ with arm swing (CMJa) and mean propulsive velocity (MPV) in the loaded jump squat exercise with 40% of the athlete's body mass were compared among the different age categories, considering body mass as a covariate...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29158615/using-lactate-threshold-to-predict-5-km-treadmill-running-performance-in-veteran-athletes
#15
Jacky Forsyth, Dean Burt, Fiona Ridley, Christopher Mann
Measuring lactate threshold to predict endurance performance is difficult among veteran athletes, due to age-related decreases in net lactate concentration. The objective of this study was to determine whether lactate threshold, as assessed using the maximal deviation method (Dmax), which is not dependent on net values of lactate, could be used as a more valid measure of 5-km treadmill running performance than other methods of determining lactate threshold. Veteran runners (18 male and 18 female, aged 47.3±6...
September 2017: Biology of Sport
https://www.readbyqxmd.com/read/29156410/how-do-we-learn-to-kill-in-volleyball-the-role-of-working-memory-capacity-and-expertise-in-volleyball-motor-learning
#16
Elisa Bisagno, Sergio Morra
This study examines young volleyball players' learning of increasingly complex attack gestures. The main purpose of the study was to examine the predictive role of a cognitive variable, working memory capacity (or "M capacity"), in the acquisition and development of motor skills in a structured sport. Pascual-Leone's theory of constructive operators (TCO) was used as a framework; it defines working memory capacity as the maximum number of schemes that can be simultaneously activated by attentional resources...
November 17, 2017: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/29154694/gait-and-quiet-stance-performance-among-adolescents-after-concussion-symptom-resolution
#17
Justin Berkner, William P Meehan, Christina L Master, David R Howell
OBJECTIVE:   To prospectively examine adolescent athletes' gait and quiet-stance performance while concurrently completing a cognitive task acutely after concussion and after symptom resolution. SETTING:   Sport concussion clinic. DESIGN:   Participants diagnosed with a concussion completed a symptom inventory and single- and dual-task quiet-stance and gait evaluations within 21 days of injury and then again after symptom resolution...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29154691/optimal-screening-methods-to-detect-cardiac-disorders-in-athletes-an-evidence-based-review
#18
Zachary K Winkelmann, Ashley K Crossway
Reference/Citation:  Harmon KG, Zigman M, Drezner JA. The effectiveness of screening history, physical exam, and ECG to detect potentially lethal cardiac disorders in athletes: a systematic review/meta-analysis. J Electrocardiol. 2015;48(3):329-338. CLINICAL QUESTION:   Which screening method should be considered best practice to detect potentially lethal cardiac disorders during the preparticipation physical examination (PE) of athletes? DATA SOURCES:   The authors completed a comprehensive literature search of MEDLINE, CINAHL, Cochrane Library, Embase, Physiotherapy Evidence Database (PEDro), and SPORTDiscus from January 1996 to November 2014...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29150854/rhinitis-and-its-impact-on-quality-of-life-in-swimmers
#19
Pavol Surda, Matus Putala, Pavel Siarnik, Abigail Walker, Ana Bernic, Wytske Fokkens
INTRODUCTION: Limited data suggest that swimmers might be affected by rhinitis significantly more often than the general population. This can have impact on quality of life but also on performance. The aim of the present study was to determine the prevalence and impact of QOL of rhinitis in swimming compared to non-swimming athletes and controls. MATERIALS AND METHODS: This was an observational case control, questionnaire based study involving elite (n=101) and non-elite swimming athletes (n=107), non-swimming athletes (n = 38) and sex and age-matched controls (n = 50)...
November 18, 2017: Allergy
https://www.readbyqxmd.com/read/29149240/z-scores-based-methods-and-their-application-to-biological-monitoring-an-example-in-professional-soccer-players
#20
Guillaume Saulière, Jérôme Dedecker, Laurie-Anne Marquet, Pierre Rochcongar, Jean-Francois Toussaint, Geoffroy Berthelot
The clinical and biological follow-up of individuals, such as the biological passport for athletes, is typically based on the individual and longitudinal monitoring of hematological or urine markers. These follow-ups aim to identify abnormal behavior by comparing the individual's biological samples to an established baseline. These comparisons may be done via different ways, but each of them requires an appropriate extra population to compute the significance levels, which is a non-trivial issue. Moreover, it is not necessarily relevant to compare the measures of a biomarker of a professional athlete to that of a reference population (even restricted to other athletes), and a reasonable alternative is to detect the abnormal values by considering only the other measurements of the same athlete...
November 15, 2017: Biostatistics
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