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Relative Age effect in sports

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https://www.readbyqxmd.com/read/28074345/the-beneficial-effects-of-physical-activity-is-it-down-to-your-genes-a-systematic-review-and-meta-analysis-of-twin-and-family-studies
#1
REVIEW
J R Zadro, D Shirley, T B Andrade, K J Scurrah, A Bauman, P H Ferreira
BACKGROUND: There is evidence for considerable heterogeneity in the responsiveness to regular physical activity (PA) which might reflect the influence of genetic factors. The aim of this systematic review was to assess whether the response to a PA intervention for measures of body composition and cardiorespiratory fitness is (i) correlated within twin pairs and/or families and (ii) more correlated in monozygotic twins (MZ) compared to dizygotic twins (DZ), which would be consistent with genetic effects...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28056046/the-adapted-italian-version-of-the-baller-identity-measurement-scale-to-evaluate-the-student-athletes-identity-in-relation-to-gender-age-type-of-sport-and-competition-level
#2
Corrado Lupo, Cristina Onesta Mosso, Flavia Guidotti, Giovanni Cugliari, Luisa Pizzigalli, Alberto Rainoldi
The purpose of this paper is twofold: to validate the properties of the Italian version of the Baller Identity Measurement Scale (i.e., BIMS-IT), a self-report questionnaire based on the athletic and academic identities; and to investigate differences in psychosocial factors such as gender, age, type of sport, and competition level. The dimensionality of the BIMS-IT was explored by means of the exploratory factor analysis, considering the scale's internal consistency too (Confirmatory Factor Analysis). Results related to exploratory and confirmatory factor analysis supported a model of measurement composed of two correlated factors: the athletic and academic identities and affectivity related to identities...
2017: PloS One
https://www.readbyqxmd.com/read/28055228/preliminary-investigation-of-brain-network-activation-bna-and-its-clinical-utility-in-sport-related-concussion
#3
A Reches, J Kutcher, R J Elbin, H Or-Ly, B Sadeh, J Greer, D J McAllister, A Geva, A P Kontos
BACKGROUND: The clinical diagnosis and management of patients with sport-related concussion is largely dependent on subjectively reported symptoms, clinical examinations, cognitive, balance, vestibular and oculomotor testing. Consequently, there is an unmet need for objective assessment tools that can identify the injury from a physiological perspective and add an important layer of information to the clinician's decision-making process. OBJECTIVE: The goal of the study was to evaluate the clinical utility of the EEG-based tool named Brain Network Activation (BNA) as a longitudinal assessment method of brain function in the management of young athletes with concussion...
January 5, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28038992/functional-and-ultrasonographic-outcomes-after-surgical-fibular-tendon-stabilisation-by-isolated-re-tensioning-of-the-superior-fibular-retinaculum
#4
C Choufani, R Rousseau, A Massein, H Pascal-Mousselard, F Khiami
BACKGROUND: Fibular tendon dislocation is a rare and usually sports-related injury. We report the functional and ultrasonographic outcomes of a simple technique for re-tensioning the superior fibular retinaculum. HYPOTHESIS: Our retinaculum re-tensioning technique is not followed by recurrent fibular tendon dislocation, as demonstrated by ultrasonography. MATERIAL AND METHOD: This single-centre single-surgeon retrospective study included 17 patients who underwent surgery to treat fibular tendon dislocation between January 2008 and December 2013...
December 27, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28038501/the-impact-of-physical-growth-and-relative-age-effect-on-assessment-in%C3%A2-physical-education
#5
Terje Dalen, Rolf Petter Ingvaldsen, Truls Valland Roaas, Arve Vorland Pedersen, Ingebrigt Steen, Tore Kristian Aune
Physical education (PE) is perhaps the school subject most likely to produce relative age effects (RAE). Like in sports, physical maturity gives students an advantage in PE, which might well be mistaken for superior ability. The aim of the present study is to investigate the extent to which physical growth, measured as height, and RAE reflect the assessment in Norwegian PE. Furthermore, we wanted to examine whether there is any gender differences in the assessment in PE as a function of physical growth and RAE...
December 30, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/28017953/-effects-of-exercise-and-sports-on-bone-health-in-pre-and-postmenopausal-women
#6
Naohisa Miyakoshi
Exercise and sports are an important means of improving bone health in pre- and postmenopausal women. Generally accepted strategies to improve bone health in this population aim to minimize age-related bone loss. In terms of physical activity, those forms that feature high-impact or weight-bearing activity appear to exert positive influences on bone health. Results of recent meta-analyses have shown that high-impact exercise significantly improves bone mineral density(BMD)in pre- and postmenopausal women. Studies have also shown that walking as an exercise therapy for more than 6 months exerts significant and positive effects on femoral neck BMD in peri- and postmenopausal women...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28005978/emergence-of-exploratory-technical-and-tactical-behavior-in-small-sided-soccer-games-when-manipulating-the-number-of-teammates-and-opponents
#7
Carlota Torrents, Angel Ric, Robert Hristovski, Lorena Torres-Ronda, Emili Vicente, Jaime Sampaio
The effects that different constraints have on the exploratory behavior, measured by the variety and quantity of different responses within a game situation, is of the utmost importance for successful performance in team sports. The aim of this study was to determine how the number of teammates and opponents affects the exploratory behavior of both professional and amateur players in small-sided soccer games. Twenty-two professional (age 25.6 ± 4.9 years) and 22 amateur (age 23.1 ± 0.7 years) male soccer players played three small-sided game formats (4 vs...
2016: PloS One
https://www.readbyqxmd.com/read/28003239/meta-analytical-review-of-the-effects-of-football-heading
#8
REVIEW
Anthony P Kontos, Rock Braithwaite, Sara P D Chrisman, Jamie McAllister-Deitrick, Larissa Symington, Valerie L Reeves, Michael W Collins
AIM/OBJECTIVE: The objective of this study was to provide a meta-analysis examining the effects of football heading. DESIGN: Meta-analytical review on football heading effects on neurocognitive performance, cognition and symptom reports. DATA SOURCES: Combinations of the key terms were entered into the following electronic database search engines: Cochrane Libraries, PyscARTICLE, PyscINFO, PubMed, ProQuest, SPORTDiscus and Web of Science on 7 July 2016...
December 21, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28000283/maturational-and-social-factors-contributing-to-relative-age-effects-in-school-sports-data-from-the-london-youth-games
#9
K E Reed, D A Parry, G R H Sandercock
Few studies have investigated whether relative age effects (RAEs) exist in school sport. None have sought to test the competing maturational and social-agent hypotheses proposed to explain the RAE. We aimed to determine the presence of RAEs in multiple school sports and examine the contribution of maturational and social factors in commonplace school sports. We analyzed birth dates of n=10645 competitors (11-18 years) in the 2013 London Youth Games annual inter-school multisport competition and calculated odds ratio (OR) for students competing based on their yearly birth quarter (Q1-Q4)...
December 20, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27984832/-injuries-in-karate-sports-a-survey-performed-during-the-world-championship-2014
#10
T Tischer, B Lembcke, M Ellenrieder, Ä Glass, W Weigert, W Mittelmeier
Background: In literature, the competitive sport of modern karate is almost always characterised as a combat sport involving injuries caused by impact effects and physical contact with opponents. There is a lack of data regarding the outcome after karate injuries, specifically with a view to the contact-free Kata karate. Methods: Performing a random test using a questionnaire, we collected data concerning regular medical treatment, prior surgeries of the locomotor system, and medical care. This study included 300 athletes from 65 countries (average age: 24...
December 2016: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/27943255/self-reported-physical-activity-levels-of-older-cancer-survivors-results-from-the-2014-national-health-interview-survey
#11
Yelena Tarasenko, Chen Chen, Nancy Schoenberg
OBJECTIVES: To examine adherence to the American College of Sports Medicine and American Cancer Society guidelines on leisure-time aerobic and muscle-strengthening physical activity (PA) of older cancer survivors. DESIGN: Cross-sectional study based on the 2014 National Health Interview Survey. SETTING: United States. PARTICIPANTS: Young-old (65-74) (n = 627), old-old (≥75) (n = 656), and middle-aged (45-64) (n = 786) cancer survivors and adults without cancer (n = 18,369), stratified according to the same age groups...
December 9, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27940807/sex-based-differences-in-cognitive-deficits-and-symptom-reporting-among-acutely-concussed-adolescent-lacrosse-and-soccer-players
#12
Natalie K Sandel, Philip Schatz, Kenneth B Goldberg, Mary Lazar
BACKGROUND: Research on the acute effects of a concussion among lacrosse players is limited, and postconcussion patterns between male and female athletes have yet to be clearly established. Differences in the style of play and protective gear worn among male and female lacrosse players potentially confound a direct comparison of sex-based differences in this population. PURPOSE: To explore sex-based differences in postconcussive neurocognitive functioning and symptom reporting outcomes in concussed adolescent male and female lacrosse players compared with a group of soccer players...
December 9, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27928206/doping-attitudes-and-covariates-of-potential-doping-behaviour-in-high-level-team-sport-athletes-gender-specific-analysis
#13
Damir Sekulic, Enver Tahiraj, Milan Zvan, Natasa Zenic, Ognjen Uljevic, Blaz Lesnik
Team sports are rarely studied with regard to doping behaviour and doping-related factors regardless of their global popularity. This study aimed to investigate doping factors and covariates of potential doping behaviour in high-level team-sport athletes. The subjects were 457 high-performing, national- and international-level athletes (21.9 ± 3.4 years of age; 179 females) involved in volleyball (n = 77), soccer (n = 163), basketball (n = 114) and handball (n = 103). Previously validated self-administered questionnaires aimed at evidencing sport factors, doping-related factors, knowledge on sport nutrition and doping, and attitudes to performance enhancement were used...
December 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27919521/unsolved-forgotten-and-ignored-features-of-the-placebo-response-in-medicine
#14
REVIEW
Paul Enck, Sibylle Klosterhalfen, Katja Weimer
PURPOSE: We aimed to identify topics of research that have been neglected, undervalued, or overseen in the past 2 decades of placebo/nocebo research. METHODS: A highly specialized literature database containing >3200 articles on the placebo or nocebo effects or response was screened for articles covering placebo effects in nutrition, sports medicine, physical therapy, and psychotherapy; for article covering gender, age, and culture as influencing factors; for articles dealing with long-term outcome, multimodality; and for articles related to technical (eHealth, mHealth) aspects of placebo effects...
December 2, 2016: Clinical Therapeutics
https://www.readbyqxmd.com/read/27918661/how-does-a-short-interrupted-recovery-break-affect-performance-and-how-is-it-assessed-a-study-on-acute-effects
#15
Maximilian Pelka, Alexander Ferrauti, Tim Meyer, Mark Pfeiffer, Michael Kellmann
A recovery process with optimal prerequisites, which is interrupted, is termed disrupted recovery. Whether this process has an influence on performance-related factors needs to be investigated. Therefore, the aim of this study was to examine how a short disturbance of a recovery phase is assessed and whether subsequent repeated sprint performance is affected by it. A quasi-experimental 2x2-factors cross-over design with 34 sport science undergraduate students (age 20.3 ± 2.1) was applied. Factors were the type of intervention (power nap vs...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27900180/pursuit-of-performance-excellence-a-population-study-of-norwegian-adolescent-female-cross-country-skiers-and-biathletes-with-disordered-eating
#16
Ingvild Pettersen, Erik Hernæs, Finn Skårderud
AIM: To examine the prevalence of disordered eating (DE) among the total population of Norwegian female cross-country skiers and biathletes at the junior level, and to determine whether sociodemographic characteristics predict DE among athletes. METHODS: A cross-sectional population study of Norwegian female junior cross-country skiers and biathletes (n=262), with a response rate of 86%. Descriptive statistics and logistic regression analyses explored the prevalence of DE and its relation to sports, competitive age groups, competitive status and education...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27893472/correspondence-between-physical-self-concept-and-participation-in-and-fitness-change-after-bi-weekly-body-conditioning-classes-in-sedentary-women
#17
Ulrika Aasa, Johan Paulin, Guy Madison
The aims of the study were (1) to investigate the effects of participation in low impact body conditioning classes on physical fitness in sedentary women at different ages and (2) to examine the correspondence between physical self-concept and participation in, and fitness change after, the participation. Ninety-two sedentary women (mean age 44.2 years) participated in 11-weeks of bi-weekly classes that included cardiovascular, strength, core, endurance and mobility exercises, all performed in synchrony with music...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27890486/towards-a-multidisciplinary-approach-to-understand-and-manage-obesity-and-related-diseases
#18
REVIEW
Stephan C Bischoff, Yves Boirie, Tommy Cederholm, Michael Chourdakis, Cristina Cuerda, Nathalie M Delzenne, Nicolaas E Deutz, Denis Fouque, Laurence Genton, Carmen Gil, Berthold Koletzko, Miguel Leon-Sanz, Raanan Shamir, Joelle Singer, Pierre Singer, Nanette Stroebele-Benschop, Anders Thorell, Arved Weimann, Rocco Barazzoni
Overnutrition and sedentary lifestyle result in overweight or obesity defined as abnormal or excessive fat accumulation that may impair health. According to the WHO, the worldwide prevalence of obesity nearly doubled between 1980 and 2008. In 2008, over 50% of both men and women in the WHO European Region were overweight, and approximately 23% of women and 20% of men were obese. Comprehensive diagnostic and therapeutic approaches should include nutritional treatment to favor the best metabolic and nutritional outcome, as well as to induce potential disease-specific benefits from selected nutritional regimens...
November 16, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27882607/fear-of-failure-psychological-stress-and-burnout-among-adolescent-athletes-competing-in-high-level-sport
#19
H Gustafsson, S S Sagar, A Stenling
The purpose of this study was to investigate fear of failure in highly competitive junior athletes and the association with psychological stress and burnout. In total 258 athletes (152 males and 108 females) ranged in age from 15 to 19 years (M = 17.4 years, SD = 1.08) participated. Athletes competed in variety of sports including both team and individual sports. Results showed in a variable-oriented approach using regression analyses that one dimension, fear of experiencing shame and embarrassment had a statistically significant effect on perceived psychological stress and one dimension of burnout, reduced sense of accomplishment...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27882605/placebo-in-sports-nutrition-a-proof-of-principle-study-involving-caffeine-supplementation
#20
B Saunders, L F de Oliveira, R P da Silva, V de Salles Painelli, L S Gonçalves, G Yamaguchi, T Mutti, E Maciel, H Roschel, G G Artioli, B Gualano
We investigated the effects of supplement identification on exercise performance with caffeine supplementation. Forty-two trained cyclists (age 37 ± 8 years, body mass [BM] 74.3 ± 8.4 kg, height 1.76 ± 0.06 m, maximum oxygen uptake 50.0 ± 6.8 mL/kg/min) performed a ~30 min cycling time-trial 1 h following either 6 mg/kgBM caffeine (CAF) or placebo (PLA) supplementation and one control (CON) session without supplementation. Participants identified which supplement they believed they had ingested ("caffeine", "placebo", "don't know") pre- and post-exercise...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
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