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Relative Age effect in sports

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https://www.readbyqxmd.com/read/28806751/the-relative-age-effect-reversal-among-the-national-hockey-league-elite
#1
Luca Fumarco, Benjamin G Gibbs, Jonathan A Jarvis, Giambattista Rossi
Like many sports in adolescence, junior hockey is organized by age groups. Typically, players born after December 31st are placed in the subsequent age cohort and as a result, will have an age advantage over those players born closer to the end of the year. While this relative age effect (RAE) has been well-established in junior hockey and other professional sports, the long-term impact of this phenomenon is not well understood. Using roster data on North American National Hockey League (NHL) players from the 2008-2009 season to the 2015-2016 season, we document a RAE reversal-players born in the last quarter of the year (October-December) score more and command higher salaries than those born in the first quarter of the year...
2017: PloS One
https://www.readbyqxmd.com/read/28800789/indicators-of-poorly-controlled-asthma-and-health-related-quality-of-life-among-school-age-children-in-the-united-states
#2
(no author information available yet)
BACKGROUND: Poorly controlled asthma has far-reaching effects on school-age children and their parents, but little is knownabout the national impact on health-related quality of life (HRQoL). OBJECTIVE: To examine HRQoL associated with asthma and indicators of poorly controlled asthma in the United States. METHODS: This was a cross-sectional analysis of HRQoL among school-age children (age range, 6-17 years) with asthma in the nationally representative 2007-2013 Medical Expenditure Panel Survey (MEPS)...
August 11, 2017: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/28792297/relative-age-effect-and-academic-timing-in-american-junior-college-baseball
#3
Thomas C Beals, Ovande Furtado, Fabio E Fontana
Previous research has shown that older athletes within age groupings are often perceived to be more talented simply due to advanced maturity, leading to biased selection in higher levels of sports competition, now commonly termed relative age effect (RAE). This study's goals were to determine whether (a) RAE influenced the selection of junior college baseball participants and (b) academic timing ( Glamser & Marciani, 1992 ), in which academic status determines age groupings more than strict age guidelines for college sports, influenced the formation of RAE...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28789630/moderate-endurance-training-marathon-training-effects-on-immunologic-and-metabolic-parameters-in-hiv-infected-patients-the-42-km-cologne-project
#4
Stefan Schlabe, Martin Vogel, Christoph Boesecke, Carolynne Schwarze-Zander, Jürgen K Rockstroh, Christian Körner, Klara Brixius, Jan-Christian Wasmuth
BACKGROUND: Improved treatment options of HIV have resulted in regular physical activities of many HIV-infected patients. However, data on effects of sports in HIV-patients are scarce. METHODS: 21 HIV-infected persons were monitored prospectively while preparing for a marathon run. Multiple parameters with regard to immunology, quality of life and metabolism were measured at 4 time points (at baseline 1 year before the marathon run, 3 and 6 months after beginning of training, and immediately before marathon)...
August 8, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28769849/an-inverse-relative-age-effect-in-male-alpine-skiers-at-the-absolute-top-level
#5
Øyvind Bjerke, Arve Vorland Pedersen, Tore K Aune, Håvard Lorås
The Relative Age Effect (RAE) can be described as the advantage of being born early after a certain cut-off date within a group of selection. The effect has been found across a wide range of sports and is particularly evident in pre-elite sports and team sports with a high selection pressure. At the absolute top level in team elite sports, the advantage of being relatively older has been reported to disappear, and even reverse, so that the relatively younger athletes are advantaged. In order to further examine such a reversal of the RAE, we investigated the performance of the overall top 50 skiers each year in the alpine World Cup, over a period of 20 years, among men (N = 234) and women (N = 235)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28764939/exercise-related-cognitive-effects-on-sensory-motor-control-in-athletes-and-drummers-compared-to-non-athletes-and-other-musicians
#6
V Bianco, M Berchicci, R L Perri, F Quinzi, F Di Russo
Both playing a musical instrument and playing sport produce brain adaptations that might affect sensory-motor functions. While the benefits of sport practice have traditionally been attributed to aerobic fitness, it is still unknown whether playing an instrument might induce similar brain adaptations, or if a specific musical instrument like drums might be associated to specific benefits because of its high energy expenditure. Since the aerobic costs of playing drums was estimated to be comparable to those of average sport activities, we hypothesized that these two groups might show both behavioral and neurocognitive similarities...
July 29, 2017: Neuroscience
https://www.readbyqxmd.com/read/28759890/maturity-status-influences-the-relative-age-effect-in-national-top-level-youth-alpine-ski-racing-and-soccer
#7
Lisa Müller, Christoph Gonaus, Christoph Perner, Erich Müller, Christian Raschner
Since the relative age effect (RAE) characterizes a problem in all age categories of alpine ski racing and soccer and the fact that, yet, to date the underlying factors have not been well investigated, the aim of the present study was to assess the influence of the biological maturity status on the RAE among youth alpine ski racers (YSR) and soccer players (SP). In total, 183 male and female YSR selected for national final races and 423 male SP selected for Elite Youth Development Centres were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28756733/relative-age-effect-in-physical-fitness-among-elementary-and-junior-high-school-students
#8
Hiroki Nakata, Miki Akido, Kumi Naruse, Motoko Fujiwara
The present study investigated characteristics of the relative age effect (RAE) among a general sample of Japanese elementary and junior high school students. Japan applies a unique annual age-grouping by birthdates between April 1 and March 31 of the following year for sport and education. Anthropometric and physical fitness data were obtained from 3,610 Japanese students, including height, weight, the 50-m sprint, standing long jump, grip strength, bent-leg sit-ups, sit and reach, side steps, 20-m shuttle run, and ball throw...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28753532/the-longitudinal-association-between-informal-caregiving-and-body-mass-index-in-the-second-half-of-life-findings-of-the-german-ageing-survey
#9
A Hajek, H-H König
OBJECTIVE: We aimed to investigate the relation between informal caregiving and body mass index (BMI) longitudinally. STUDY DESIGN: The data were drawn from wave 2 (2002) to wave 5 (2014) of the German Ageing Survey. This is a representative sample of the community-dwelling population aged 40 years and above in Germany. METHODS: Self-rated BMI was used. Individuals were asked whether they provide informal care on a regular basis. Adjusting for employment status, age, marital status, morbidity and depressive symptoms, fixed effects regressions were used...
July 25, 2017: Public Health
https://www.readbyqxmd.com/read/28752186/low-impact-sports-activities-are-feasible-after-meniscus-transplantation-a-systematic-review
#10
REVIEW
Sue D Barber-Westin, Frank R Noyes
PURPOSE: To determine sports activities achieved after meniscus transplantation and if associations exist between sports activity levels and transplant failure or progression of tibiofemoral osteoarthritis (OA). METHODS: A systematic search was performed using PubMed and Cochrane online databases. Inclusionary criteria were English language, clinical trials published from 1996 through May 2017, minimum 2 years of follow-up, and sports activity data reported. RESULTS: Twenty-eight studies were included in which 1521 menisci were implanted into 1497 patients...
July 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28748107/study-protocol-a-mixed-methods-feasibility-study-for-a-loaded-self-managed-exercise-programme-for-patellofemoral-pain
#11
Benjamin E Smith, Paul Hendrick, Marcus Bateman, Fiona Moffatt, Michael Skovdal Rathleff, James Selfe, Toby O Smith, Pip Logan
BACKGROUND: Patellofemoral pain (PFP) is one of the most common forms of knee pain in adults under the age of 40, with a prevalence of 23% in the general population. The long-term prognosis is poor, with only one third of people pain-free 1 year after diagnosis. The biomedical model of pain in relation to persistent PFP has recently been called into question. It has been suggested that interventions for chronic musculoskeletal conditions should consider alternative mechanisms of action, beyond muscles and joints...
2018: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28742608/epidemiology-of-injuries-in-women-s-lacrosse-implications-for-sport-level-and-sex-specific-injury-prevention-strategies
#12
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/28721460/the-degree-of-shoulder-involvement-in-sports-dosis-scale-is-a-valid-and-responsive-instrumentation-for-shoulder-assessment-in-patients-after-surgery-for-anterior-instability
#13
Alberto Vascellari, Carlo Ramponi, Davide Venturin, Giulia Ben, Davide Blonna, Nicolò Coletti
PURPOSE: The purpose of this study was to evaluate validity and responsiveness of the Degree of Shoulder Involvement in Sport (DOSIS) scale. METHODS: A web-based survey was developed to test the construct validity of the DOSIS scale. Fifty-three patients with a median age of 33 years (range 17-59) were included in the study. Convergent validity was evaluated by external correlation (Spearman's rank correlation coefficient, r) of the DOSIS with the Brophy-Marx and Tegner activity scales, the Western Ontario shoulder instability index (WOSI), the Simple Shoulder Test (SST), and the Short-Form 36 (SF-36)...
July 18, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28718171/younger-patients-and-men-achieve-higher-outcome-scores-than-older-patients-and-women-after-anterior-cruciate-ligament-reconstruction
#14
Kate E Webster, Julian A Feller
BACKGROUND: There is some evidence that functional performance and validated outcome scores differ according to the gender, age, and sport participation status of a patient after anterior cruciate ligament (ACL) reconstruction. However, the impact of these three factors, and interaction among them, has not been studied across a large relatively homogeneous group of patients to better elucidate their impact. QUESTIONS/PURPOSES: We reviewed a large cohort of patients who had undergone ACL reconstruction to determine if ROM, knee laxity, objective performance measures, and validated outcome scores differed according to (1) gender; (2) age; and (3) sport participation status...
July 17, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28704245/inciting-events-associated-with-lumbar-facet-joint-pain
#15
Charles A Odonkor, Yian Chen, Peju Adekoya, Bryan J Marascalchi, Hira Chaudhry-Richter, Teresa Tang, Christopher Abruzzese, Berklee K Cohen, Steven P Cohen
BACKGROUND: Low back pain is the leading cause of years lost to disability with approximately 15%-25% of the chronic back pain population suffering from lumbar facet arthropathy. No large-scale study has sought to systematically identify inciting events for lumbar facet arthropathy. The aim of this study is to quantify the proportion of individuals with lumbar facetogenic pain who report a specific precipitating event(s) and to determine if there is a correlation between these events and treatment outcome...
July 10, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28704072/effects-of-active-videogame-and-sports-play-and-active-recreation-for-kids-physical-education-on-children-s-health-related-fitness-and-enjoyment
#16
Han Chen, Haichun Sun
OBJECTIVE: The purpose of the study was to compare the effects of a Kinect active videogame (AVG) and the Sports, Play, and Active Recreation for Kids (SPARK) intervention in improving children's health-related fitness and physical activity (PA) enjoyment. MATERIALS AND METHODS: A total of 65 students from both third and fourth grade in a rural elementary school participated in the study. The third graders (N = 29, mean age = 9.1 years, 10 boys, mean body mass index [BMI] = 20...
July 13, 2017: Games for Health
https://www.readbyqxmd.com/read/28703082/dental-injuries-in-younger-emergency-department-patients
#17
Vigil James, Yona R Vandersluis, Evangeline W J Zhang, Dennis Scolnik
BACKGROUND: Dental trauma is a relatively common occurrence in childhood, with an impact exceeding that of periodontal diseases. It places a significant burden on the public health system because of its high frequency, impact on quality of life and consumption of resources. OBJECTIVES: To identify changing trends of dental injury in patients between 0-18 years of age in Canada and provide a detailed assessment of dental injury patterns in patients attending a large pediatric tertiary care hospital...
July 13, 2017: CJEM
https://www.readbyqxmd.com/read/28700518/agility-and-vertical-jump-performances-are-impacted-by-acute-cool-exposure
#18
Lara A Carlson, Cara Fowler, Michael A Lawrence
Outdoor sports teams may be exposed to acute cold stress during competition, which may affect performance. Limited research has explored the effects of cold exposure on athletic components. The purpose of this study was to examine the effects of an acute whole-body cool exposure on pro-agility, vertical jump, and sprint performances. Eleven lightly clothed (∼0.3 clo) and not cold acclimatized volunteers (10/1 women/men: age 20.5 ± 0.5 y; height 1.65 ± 0.09 m; mass 63.3 ± 8.9 kg; body fat 21.3 ± 7.6%) completed performance tests in both thermoneutral (17...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28683231/sound-intensity-feedback-during-running-reduces-loading-rates-and-impact-peak
#19
Jeremiah J Tate, Clare E Milner
Study Design Controlled laboratory study, within session design. Background Gait retraining has been proposed as an effective intervention to reduce impact loading in runners at risk of stress fractures. Interventions that can be easily implemented in the clinic are needed. Objective To assess the immediate effects of sound intensity feedback related to impact during running on vertical impact peak (VIP), peak vertical instantaneous loading rate (VILR), and vertical average loading rate (VALR). Methods Fourteen healthy, college-aged runners who ran at least 9...
July 6, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28674488/dancing-or-fitness-sport-the-effects-of-two-training-programs-on-hippocampal-plasticity-and-balance-abilities-in-healthy-seniors
#20
Kathrin Rehfeld, Patrick Müller, Norman Aye, Marlen Schmicker, Milos Dordevic, Jörn Kaufmann, Anita Hökelmann, Notger G Müller
Age-related degenerations in brain structure are associated with balance disturbances and cognitive impairment. However, neuroplasticity is known to be preserved throughout lifespan and physical training studies with seniors could reveal volume increases in the hippocampus (HC), a region crucial for memory consolidation, learning and navigation in space, which were related to improvements in aerobic fitness. Moreover, a positive correlation between left HC volume and balance performance was observed. Dancing seems a promising intervention for both improving balance and brain structure in the elderly...
2017: Frontiers in Human Neuroscience
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