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Relative Age effect in sports

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https://www.readbyqxmd.com/read/28520665/family-history-of-migraine-associated-with-posttraumatic-migraine-symptoms-following-sport-related-concussion
#1
Alicia Sufrinko, Jamie McAllister-Deitrick, R J Elbin, Michael W Collins, Anthony P Kontos
OBJECTIVE: To determine whether family history of migraine increased the likelihood of posttraumatic migraine (PTM) symptom presentation in adolescents following concussion, and examine the influence of family history of migraine and PTM on postinjury outcomes. SETTING: Outpatient concussion clinic. PARTICIPANTS: A total of 153 patients with concussion (103 males and 50 females) aged 15.72 ± 1.48 years (range 12-18 years). DESIGN: Cross-sectional, observational study of patients presenting for initial evaluation 4...
May 17, 2017: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/28520461/clinical-outcome-after-arthroscopic-debridement-and-microfracture-for-osteochondritis-dissecans-of-the-capitellum
#2
Rens Bexkens, Kim I M van den Ende, Paul T Ogink, Christiaan J A van Bergen, Michel P J van den Bekerom, Denise Eygendaal
BACKGROUND: Various surgical treatment techniques have been developed to treat capitellar osteochondritis dissecans; however, the optimal technique remains the subject of ongoing debate. PURPOSE: To evaluate clinical outcomes after arthroscopic debridement and microfracture for advanced capitellar osteochondritis dissecans. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Between 2008 and 2015, the authors followed 77 consecutive patients (81 elbows) who underwent arthroscopic debridement and microfracture, and loose body removal if needed, for advanced capitellar osteochondritis dissecans...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28514922/effects-of-youth-participation-in-extra-curricular-sport-programs-on-perceived-self-efficacy-a-multilevel-analysis
#3
Riller S Reverdito, Humberto M Carvalho, Larissa R Galatti, Alcides J Scaglia, Carlos E Gonçalves, Roberto R Paes
The present study examined extracurricular sport participation variables and developmental context in relationship to perceived self-efficacy among underserved adolescents. Participants ( n = 821, 13.6 ± 1.5 years) completed the Youth Experience in Sport questionnaire and General Self-Efficacy Scale. We used the Human Development Index (HDI) to characterize developmental contexts. Multilevel regression models were used to explore the relative contributions of age, sex, years of participation in extracurricular sport, HDI, and perceived positive experience in sport...
June 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28513268/effects-of-volume-training-on-strength-and-endurance-of-back-muscles-a-randomized-controlled-trial
#4
Leonardo Shigaki, Cynthia Gobbi Alves Araújo, Mariane Guizeline Calderon, Thais Karoline Cezar Costa, Andreo Fernando Aguiar, Leonardo Oliveira Pena Costa, Rubens A da Silva
CONTEXT: Strength/resistance training volume has historically been supported in the American College of Sports Medicine recommendations. However, for the back muscles, exercise prescription related to the number of sets, such as single vs. multiple, is not well established in the literature. OBJECTIVE: The purpose of this study was to compare the effects of two training volumes on strength and endurance of back extensor muscles in untrained young participants, with regard to a repeated measures design...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28512863/defining-a-multimodal-signature-of-remote-sports-concussions
#5
Sébastien Tremblay, Yasser Iturria-Medina, José María Mateos-Pérez, Alan C Evans, Louis De Beaumont
Sports-related concussions lead to persistent anomalies of the brain structure and function that interact with the effects of normal ageing. Although post-mortem investigations have proposed a bio-signature of remote concussions, there is still no clear in vivo signature. In the current study, we characterized white matter integrity in retired athletes with a history of remote concussions by conducting a full-brain, diffusion-based connectivity analysis. Next, we combined MRI diffusion markers with MR spectroscopic, MRI volumetric, neurobehavioral and genetic markers to identify a multidimensional in vivo signature of remote concussions...
May 16, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28505580/factors-affecting-perceived-change-in-physical-activity-in-pregnancy
#6
Astrid Merkx, Marlein Ausems, Luc Budé, Raymond de Vries, Marianne J Nieuwenhuijze
OBJECTIVE: reduction of physical activity (PA) during pregnancy is common but undesirable, as it is associated with negative outcomes, including excessive gestational weight gain. Our objective was to explore changes in five types of activity that occurred during pregnancy and the behavioural determinants of the reported changes in PA. DESIGN: we performed a secondary analysis of a cross sectional survey that was constructed using the ASE-Model - an approach to identifying the factors that drive behaviour change that focuses on Attitude, Social influence, and self-Efficacy...
May 9, 2017: Midwifery
https://www.readbyqxmd.com/read/28480694/long-term-high-intensity-sport-practice-modulates-adaptative-changes-in-athletes-heart-and-in-the-autonomic-nervous-system-profile
#7
Witold Slomko, Joanna Slomko, Tomasz Kowalik, Jacek J Klawe, Malgorzata Tafil-Klawe, Agnieszka Cudnoch-Jedrzejewska, Julia L Newton, Pawel Zalewski
BACKGROUND: The purpose of this study was to compare cardiovascular and autonomic adaptation changes in athletes exposed to high intensity and uninterrupted training for extended periods of time. METHODS: We assessed hemodynamic profile and cardiac function in 22 international master-level athletes, free of cardiovascular disease who experienced particularly intensive and uninterrupted training over a 8- to 21-year-period. RESULTS: One-way ANOVA revealed that in athletes, extreme and uninterrupted strength and endurance training over long periods of time (up to 21 years) causes an increase in resting heart rate (50...
May 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28466006/different-types-of-physical-activity-and-fitness-and-health-in-adults-an-18-year-longitudinal-study
#8
Steffen C E Schmidt, Susanne Tittlbach, Klaus Bös, Alexander Woll
Objective. The aim of this study is to examine the relationship between different types of daily life physical activity (PA) and physical fitness (PF) and health throughout adulthood. Methods. A total of 723 men and women, aged 28-76 years, participated 1681 times during four measurement points from 1992 to 2010 in this study. We assessed self-reported PA, anthropometrics, physical health status (HS), and PF in each study year. Hierarchical linear modeling (HLM) was used to analyze the measures. Results. PF and HS worsened with increasing age while sports activity (SA) declined...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28464437/relationship-between-sports-experience-and-executive-function-in-6-12-year-old-children-independence-from-physical-fitness-and-moderation-by-gender
#9
Toru Ishihara, Shigemi Sugasawa, Yusuke Matsuda, Masao Mizuno
The purpose of this study was to evaluate the relationship between sports experience (i.e., tennis experience) and executive function in children while controlling for physical activity and physical fitness. Sixty-eight participants (6-12 years old, 34 males and 34 females) were enrolled in regular tennis lessons (mean = 2.4 years, range = 0.1-7.3 years) prior to the study. Executive functions, including inhibitory control (the Stroop Color-Word Test), working memory (the 2-back Task), and cognitive flexibility (the Local-global Task) were evaluated...
May 2, 2017: Developmental Science
https://www.readbyqxmd.com/read/28455361/what-is-the-difference-in-concussion-management-in-children-as-compared-with-adults-a-systematic-review
#10
REVIEW
Gavin A Davis, Vicki Anderson, Franz E Babl, Gerard A Gioia, Christopher C Giza, William Meehan, Rosemarie Scolaro Moser, Laura Purcell, Philip Schatz, Kathryn J Schneider, Michael Takagi, Keith Owen Yeates, Roger Zemek
AIM: To evaluate the evidence regarding the management of sport-related concussion (SRC) in children and adolescents. The eight subquestions included the effects of age on symptoms and outcome, normal and prolonged duration, the role of computerised neuropsychological tests (CNTs), the role of rest, and strategies for return to school and return to sport (RTSp). DESIGN: Systematic review. DATA SOURCES: MEDLINE (OVID), Embase (OVID) and PsycInfo (OVID)...
April 28, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28454588/a-case-matched-study-examining-the-reliability-of-using-impact-to-assess-effects-of-multiple-concussions
#11
Trevor Barker, Stephen A Russo, Gaytri Barker, Mark A Rice, Mary G Jeffrey, Gordon Broderick, Travis J A Craddock
BACKGROUND: Approximately 3.8 million sport and recreational concussions occur per year, creating a need for accurate diagnosis and management of concussions. Researchers and clinicians are exploring the potential dose-response cumulative effects of concussive injuries using computerized neuropsychological exams, however, results have been mixed and/or contradictory. This study starts with a large adolescent population and applies strict inclusion criteria to examine how previous mild traumatic brain injuries affect symptom reports and neurocognitive performance on the Immediate Post-concussion Assessment and Cognitive Testing (ImPACT) computerized tool...
April 28, 2017: BMC Psychology
https://www.readbyqxmd.com/read/28451617/return-to-sport-for-skeletally-immature-athletes-after-acl-reconstruction-preventing-a-second-injury-using-a-quality-of-movement-assessment-and-quantitative-measures-to-address-modifiable-risk-factors
#12
Jessica Graziano, Theresa Chiaia, Polly de Mille, Danyal H Nawabi, Daniel W Green, Frank A Cordasco
BACKGROUND: Reinjury rates after anterior cruciate ligament reconstruction (ACLR) are highest among young athletes, who consequently suffer from low rates of return to play. Historically, quantitative measures have been used to determine readiness to return to sport; however, they do not assess modifiable risk factors related to the quality of movement. PURPOSE: To determine the effectiveness of a criteria-based rehabilitation progression and return-to-sport criteria on efficient return to activity and prevention of second injury in young athletes post-ACLR...
April 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28451609/the-pediatric-adolescent-shoulder-survey-pass-a-reliable-youth-questionnaire-with-discriminant-validity-and-responsiveness-to-change
#13
Eric W Edmonds, Tracey P Bastrom, Joanna H Roocroft, Valerie A Calandra-Young, Andrew T Pennock
BACKGROUND: Health-related quality of life tools for shoulder pathology in adults have been developed, such as the Disabilities of the Arm, Shoulder, and Hand (DASH) or QuickDASH. However, some content is not applicable to or readily grasped by a younger population. PURPOSE: To evaluate the psychometric properties of a new 13-item pediatric/adolescent shoulder survey (PASS). STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: An initial development cohort of children was given the PASS, QuickDASH, and single assessment numeric evaluation (SANE) in a prospective fashion...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28451013/the-effect-of-group-exercise-frequency-on-health-related-quality-of-life-in-institutionalized-elderly
#14
Nivash Rugbeer, Serela Ramklass, Andrew Mckune, Johan van Heerden
INTRODUCTION: The study aimed to determine the effect of group exercise frequency on health related quality of life in institutionalized elderly. METHODS: One hundred participants were recruited for voluntary participation from five aged care facilities, with inclusion being based on the outcome of a medical assessment by a sports physician. A quasi-experimental design was used to compare the effect of a 12 week group exercise programme on two groups of participants using pre-test and post-test procedures...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28441037/preseason-anxiety-and-depressive-symptoms-and-prospective-injury-risk-in-collegiate-athletes
#15
Hongmei Li, Jennifer J Moreland, Corinne Peek-Asa, Jingzhen Yang
BACKGROUND: Psychological risk factors are increasingly recognized as important in sport-related injury prevention. Understanding how these psychological factors may affect the risk of injuries could help design effective prevention programs. PURPOSE: To determine the effect of reported preseason anxiety and depressive symptoms on the risk of injuries during a prospective season in a cohort of collegiate athletes. STUDY DESIGN: Cohort study; Level of evidence, 2...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28418696/eccentric-exercise-kinesiology-tape-and-balance-in-healthy-men
#16
Simona Hosp, Ramona Folie, Robert Csapo, Michael Hasler, Werner Nachbauer
CONTEXT:   Deficits in balance have been identified as a possible risk factor for knee injuries in athletes. Despite a lack of evidence for its effectiveness, kinesiology tape (KT) is widely used to prevent knee injuries. OBJECTIVE:   To investigate the influence of KT at the knee joint on balance ability in healthy men after eccentric exercise. DESIGN:   Crossover study. SETTING:   University laboratory. PATIENTS OR OTHER PARTICIPANTS:   Twelve young men with no history of lower limb injury volunteered for the study (age = 23...
April 18, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28377134/rule-modification-in-junior-sport-does-it-create-differences-in-player-movement
#17
Paul B Gastin, Matthew D Allan, Kylie Bellesini, Michael Spittle
OBJECTIVES: To determine the effects of rule modification on player movement during matchplay in junior Australian football (AF). DESIGN: Quasi-experimental study design. METHODS: Time-motion analysis was used to record variables pertaining to player movement including total distance covered, high-speed running (HSR) distance (>14.4km/h) and HSR efforts. GPS data obtained from 145 players (7-12 years) were analysed across four junior AF leagues and three age group combinations (U8/U9, U9/U10 and U11/U12)...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28367198/effect-of-gender-and-physical-activity-on-internet-addiction-in-medical-students
#18
Muhammad Alamgir Khan, Faizania Shabbir, Tausif Ahmed Rajput
OBJECTIVE: To determine the effect of gender and physical activity on internet addiction in medical students. METHODS: In this cross sectional, analytical study Young's internet addiction test questionnaire was distributed to 350 MBBS students of Army Medical College, Rawalpindi. The study was conducted from January to May 2015. A dichotomous response from students regarding physical activity was obtained which was verified from the sports department of the institution...
January 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28352225/evolution-of-neuroplasticity-in-response-to-physical-activity-in-old-age-the-case-for-dancing
#19
Patrick Müller, Kathrin Rehfeld, Marlen Schmicker, Anita Hökelmann, Milos Dordevic, Volkmar Lessmann, Tanja Brigadski, Jörn Kaufmann, Notger G Müller
From animal research, it is known that combining physical activity with sensory enrichment has stronger and longer-lasting effects on the brain than either treatment alone. For humans dancing has been suggested to be analogous to such combined training. Here we assessed whether a newly designed dance training program that stresses the constant learning of new movement patterns is superior in terms of neuroplasticity to conventional fitness activities with repetitive exercises and whether extending the training duration has additional benefits...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28350537/comparison-of-structured-and-unstructured-physical-activity-training-on-predicted-vo2max-and-heart-rate-variability-in-adolescents-a-randomized-control-trial
#20
Vivek Kumar Sharma, Senthil Kumar Subramanian, Krishnakumar Radhakrishnan, Rajathi Rajendran, Balasubramanian Sulur Ravindran, Vinayathan Arunachalam
BACKGROUND: Physical inactivity contributes to many health issues. The WHO-recommended physical activity for adolescents encompasses aerobic, resistance, and bone strengthening exercises aimed at achieving health-related physical fitness. Heart rate variability (HRV) and maximal aerobic capacity (VO2max) are considered as noninvasive measures of cardiovascular health. The objective of this study is to compare the effect of structured and unstructured physical training on maximal aerobic capacity and HRV among adolescents...
March 28, 2017: Journal of Basic and Clinical Physiology and Pharmacology
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