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Relative Age effect in sports

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https://www.readbyqxmd.com/read/28441037/preseason-anxiety-and-depressive-symptoms-and-prospective-injury-risk-in-collegiate-athletes
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/28347719/controlling-coaching-and-athlete-thriving-in-elite-adolescent-netballers-the-buffering-effect-of-athletes-mental-toughness
#7
Daniel F Gucciardi, Andreas Stamatis, Nikos Ntoumanis
OBJECTIVES: The purposes of this study were to examine the association between controlling coach behaviours and athlete experiences of thriving and test the buffering effect of mental toughness on this relation. DESIGN: A cross-sectional survey. METHODS: In total, 232 female netballers aged 11 to 17 years (14.97+1.52) with between 1 and 15 years of experience in their sport (7.50+2.28) completed measures of controlling coach interpersonal style, mental toughness and thriving...
March 21, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28338445/socioeconomic-status-and-outcomes-after-sport-related-concussion-a-preliminary-investigation
#8
Scott L Zuckerman, Brian Holt Zalneraitis, Douglas J Totten, Kolin E Rubel, Andrew W Kuhn, Aaron M Yengo-Kahn, Christopher M Bonfield, Allen K Sills, Gary S Solomon
OBJECTIVE A significant proportion of patients experience long-term symptoms after sport-related concussion (SRC), and several factors have been associated with this protracted recovery. Limited data exist on the role of socioeconomic status (SES) on SRC outcomes. The objective in this study was to conduct a preliminary investigation to determine the effect of SES on outcomes after SRC in student-athletes treated at a regional sports concussion center. METHODS A retrospective cohort study of 282 middle school, high school, and collegiate student-athletes was conducted...
March 24, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28326044/geographical-variations-in-the-interaction-of-relative-age-effects-in-youth-and-adult-elite-soccer
#9
Christina Steingröver, Nick Wattie, Joseph Baker, Werner F Helsen, Jörg Schorer
Selection biases based on the use of cut-off dates and the timing of athletes' birthdates have been termed relative age effects. These effects have been shown to differentially affect individuals involved in sport. For example, young male soccer players born early in their age group are overrepresented in elite teams while studies in adult soccer indicated potential carry-over effects from talent development systems. This two-study approach focuses on the processes within multi-year age groups in youth and adult elite soccer and on the role of players' age position within the age band with regard to players' birth year and birth month...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28325087/physical-activity-correlates-in-people-living-with-hiv-aids-a-systematic-review-of-45-studies
#10
Davy Vancampfort, James Mugisha, Justin Richards, Marc De Hert, Michel Probst, Brendon Stubbs
PURPOSE: Understanding barriers and facilitators of physical activity participation in persons living with HIV/AIDS is an essential first step in order to devise effective interventions. The present review provides a systematic quantitative review of the physical activity correlates in people with HIV/AIDS. METHODS: Major electronic databases were searched till August 2016. Keywords included "physical activity" or "exercise" or "sports" and "AIDS" or "HIV". RESULTS: Out of 55 correlates from 45 studies (N = 13,167; mean age range = 30...
March 22, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28316257/acute-kinematic-and-kinetic-adaptations-to-wearable-resistance-during-vertical-jumping
#11
Paul Macadam, Kim D Simperingham, John B Cronin, Grace Couture, Chloe Evison
One variation of vertical jump (VJ) training is resisted or weighted jump training, where wearable resistance (WR) enables jumping to be overloaded in a movement specific manner. A two-way analysis of variance with Bonferroni post hoc contrasts was used to determine the acute changes in VJ performance with differing load magnitudes and load placements. Kinematic and kinetic data were quantified using a force plate and contact mat. Twenty sport active subjects (age: 27.8 ± 3.8 years; body mass (BM): 70...
March 19, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28301451/traumatic-brain-injury-related-emergency-department-visits-hospitalizations-and-deaths-united-states-2007-and-2013
#12
Christopher A Taylor, Jeneita M Bell, Matthew J Breiding, Likang Xu
PROBLEM/CONDITION: Traumatic brain injury (TBI) has short- and long-term adverse clinical outcomes, including death and disability. TBI can be caused by a number of principal mechanisms, including motor-vehicle crashes, falls, and assaults. This report describes the estimated incidence of TBI-related emergency department (ED) visits, hospitalizations, and deaths during 2013 and makes comparisons to similar estimates from 2007. REPORTING PERIOD: 2007 and 2013. DESCRIPTION OF SYSTEM: State-based administrative health care data were used to calculate estimates of TBI-related ED visits and hospitalizations by principal mechanism of injury, age group, sex, and injury intent...
March 17, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28276913/postural-stability-clicker-reaction-time-and-bow-draw-force-predict-performance-in-elite-recurve-archery
#13
Wayne Spratford, Rhiannon Campbell
Recurve archery is an Olympic sport that requires extreme precision, upper body strength and endurance. The purpose of this research was to quantify how postural stability variables both pre- and post-arrow release, draw force, flight time, arrow length and clicker reaction time, collectively, impacted on the performance or scoring outcomes in elite recurve archery athletes. Thirty-nine elite-level recurve archers (23 male and 16 female; mean age = 24.7 ± 7.3 years) from four different countries volunteered to participate in this study prior to competing at a World Cup event...
February 14, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28268276/preliminary-results-of-residual-deficits-observed-in-athletes-with-concussion-history-combined-eeg-and-cognitive-study
#14
Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai
Assessment, treatment, and management of sport-related concussions are a widely recognized public health issue. Although several neuropsychological and motor assessment tools have been developed and implemented for sports teams at various levels and ages, the sensitivity of these tests has yet to be validated with more objective measures to make return-to-play (RTP) decisions more confidently. The present study sought to analyze the residual effect of concussions on a sample of adolescent athletes who sustained one or more previous concussions compared to those who had no concussion history...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28257620/the-effectiveness-of-combined-exercise-interventions-for-preventing-postmenopausal-bone-loss-a-systematic-review-and-meta-analysis
#15
Renqing Zhao, Mengyi Zhang, Qi Zhang
Study Design Systematic review and meta-analysis. Background It remains unclear whether exercise combining different types of physical activities (combined exercise interventions) would effectively preserve postmenopausal women's bone mineral density (BMD) at different sites. Objective To examine the impact of combined exercise interventions on lumbar spine, femoral neck, total hip, and total body BMD in postmenopausal women. Methods An electronic database search was conducted in PubMed, EMBASE, SPORTDiscus, and Web of Science up to January 1, 2016...
April 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28252195/is-positive-thinking-in-anticipation-of-a-performance-situation-better-than-distraction-an-experimental-study-in-preadolescents
#16
Stephanos P Vassilopoulos, Andreas Brouzos, Haralambos Tsorbatzoudis, Olga Tziouma
The current study compares the effects of experimentally induced positive anticipatory thinking and distraction in preadolescents aged 12-13. Eighty-seven participants were instructed to either engage in positive anticipatory thoughts or perform a distraction task while preparing to perform a sporting activity in front of their peers. Results revealed that trait social anxiety was associated with more negative estimates of sport performance and catastrophic thoughts relating to the impending sport activity...
April 2017: Scandinavian Journal of Psychology
https://www.readbyqxmd.com/read/28247331/exercise-based-interventions-for-injury-prevention-in-tackle-collision-ball-sports-a-systematic-review
#17
REVIEW
Nicola Sewry, Evert Verhagen, Mike Lambert, Willem van Mechelen, Wayne Viljoen, Clint Readhead, James Brown
BACKGROUND: The injury burden in collision sports is relatively high compared to other team sports. Therefore, participants in these sports would benefit by having effective injury prevention programs. Exercise-based interventions have successfully reduced injuries in soccer, but evidence on exercise-based interventions in tackle collision sports is limited. OBJECTIVE: The objective of this review is to systematically examine the evidence of exercise-based intervention programs reducing injuries in tackle collision sports...
February 28, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28226433/preliminary-results-of-residual-deficits-observed-in-athletes-with-concussion-history-combined-eeg-and-cognitive-study
#18
Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai, Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai, Reza Fazel-Rezai, Jeffrey L Gendreau, Benjamin D Johnson, Tamanna T K Munia, Ajay K Verma, Kouhyar Tavakolian, Mark Romanick
Assessment, treatment, and management of sport-related concussions are a widely recognized public health issue. Although several neuropsychological and motor assessment tools have been developed and implemented for sports teams at various levels and ages, the sensitivity of these tests has yet to be validated with more objective measures to make return-to-play (RTP) decisions more confidently. The present study sought to analyze the residual effect of concussions on a sample of adolescent athletes who sustained one or more previous concussions compared to those who had no concussion history...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222582/anthropometric-and-performance-measures-to-study-talent-detection-in-youth-volleyball
#19
Giovanni Melchiorri, Valerio Viero, Tamara Triossi, Giuseppe Annino, Elvira Padua, Virginia Tancredi
BACKGROUND: The aim of this work was to study anthropometric and performance measurements in 60 young male volleyball players (YV) and 60 youth not active in the sport (YNA) to assess which of these would be more useful to study the characteristics of potential performers. METHODS: Eight measures to assess anthropometric characteristics, six performance measures and two tests for joint mobility were used. Also relative age and level of maturation were assessed. RESULTS: The anthropometric variables, relative age and level of maturation measured did not show statistically significant differences between groups...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28211600/feasibility-of-early-physical-therapy-for-dizziness-after-a-sports-related-concussion-a-randomized-clinical-trial
#20
J C Reneker, A Hassen, R S Phillips, M C Moughiman, M Donaldson, J Moughiman
The purpose of this study was to (a) assess the feasibility of recruitment/retention of participants, protocol/resource management, and participant safety, and (b) estimate the size of the effect between the experimental and control groups. This was a feasibility study conducted as a prospective pilot double-blind randomized clinical trial. Subjects aged 10-23 years old with acute concussion and dizziness were enrolled from sports medicine centers. Forty-one participants were randomized into treatment and were seen for physical therapy beginning at 10 days post-concussion...
February 17, 2017: Scandinavian Journal of Medicine & Science in Sports
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