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https://www.readbyqxmd.com/read/29689184/development-and-pilot-testing-of-the-dual-task-screen-in-healthy-adolescents
#1
Jaclyn Stephens, Rachel Nicholson, Beth Slomine, Stacy Suskauer
Athletes with mild traumatic brain injury (mTBI) should refrain from high-risk activities until recovered (symptom free and cognitive and physical exam findings normalize). Studies have suggested that this examination may not be sufficiently sensitive because dual-task paradigms, which typically assess motor performance while a person simultaneously completes a distractor task, can detect residual deficits in athletes who otherwise appear recovered from mTBI. Paradigms used to date are time-intensive procedures conducted in laboratory settings...
May 2018: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/29689117/relative-age-effects-in-international-age-group-championships-a-study-of-spanish-track-and-field-athletes
#2
Javier Brazo-Sayavera, María Asunción Martínez-Valencia, Lisa Müller, Georgios Andronikos, Russell J J Martindale
The relative age effect is a well-researched phenomenon, however there is still a dearth of understanding in track and field and female sport. This study investigated the role of relative age on selection for international competition of Spanish age group athletes between 2006-2014. Six hundred and forty two athletes competed for Spain at U20 or U18 age group international competition (n = 359 males; 283 females) across 9 years. The birthdates of these athletes were compared against the population of registered athletes at that time (14,502 males; 10,096 females)...
2018: PloS One
https://www.readbyqxmd.com/read/29687012/sex-based-differences-of-medial-collateral-ligament-and-anterior-cruciate-ligament-strains-with-cadaveric-impact-simulations
#3
Nathan D Schilaty, Nathaniel A Bates, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
Background: Female patients sustain noncontact knee ligament injuries at a greater rate compared with their male counterparts. The cause of these differences in the injury rate and the movements that load the ligaments until failure are still under dispute in the literature. Purpose/Hypotheses: This study was designed to determine differences in anterior cruciate ligament (ACL) and medial collateral ligament (MCL) strains between male and female cadaveric specimens during a simulated athletic task...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29685828/influence-of-cold-water-immersion-on-recovery-of-elite-triathletes-following-the-ironman-world-championship
#4
Rebecca L Stearns, Julie K Nolan, Robert A Huggins, Carl M Maresh, Colleen X Munõz, Kelly D Pagnotta, Brittanie M Volk, Douglas J Casa
OBJECTIVES: Cold water immersion (CWI) has been widely used for enhancing athlete recovery though its use following an Ironman triathlon has never been examined. The purpose of this paper is to determine the influence of CWI immediately following an Ironman triathlon on markers of muscle damage, inflammation and muscle soreness. DESIGN: Prospective cohort study. METHODS: Thirty three (22 male, 11 female), triathletes participating in the Ironman World Championships volunteered to participate (mean±SD: age=40±11years; height=174...
January 31, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29683918/detection-of-persisting-concussion-effects-on-neuromechanical-responsiveness
#5
Gary B Wilkerson, Dustin C Nabhan, Chad J Prusmack, William J Moreau
PURPOSE: Assessment of various indices of neuromechanical responsiveness for association with concussion history. METHODS: An observational cohort study included 48 elite athletes (34 males: 23.8 ±4.4 years; 14 females: 25.4 ±4.5 years) who performed visuomotor reaction time (VMRT) tests involving rapid manual contact with illuminated target buttons that included 2 dual-task conditions: 1) simultaneous oral recitation of scrolling text (VMRT+ST) and 2) simultaneous verbal responses to identify the right or left direction indicated by the center arrow of the Eriksen flanker test (VMRT+FT)...
April 21, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29683770/athletes-perceptions-of-coaching-competency-and-team-conflict-in-sport-teams-a-multilevel-analysis
#6
I González-Ponce, F M Leo, R Jiménez, D Sánchez-Oliva, H Sarmento, A Figueiredo, T García-Calvo
The purpose of this study was to examine the relationship between coaching competency and team conflict, at individual and team levels, over the season. The participants were professional female and male soccer players, who participated in the First and Second Division. A longitudinal study was performed. At Time 1, the sample of participants consisted of 581 soccer players aged between 15 and 39 years. At Time 2, 549 players were recruited from the original sample aged between 15 and 37 years. Finally, at Time 3, the sample comprised 576 players aged between 15 and 37 years...
April 23, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29672135/influences-of-mental-illness-current-psychological-state-and-concussion-history-on-baseline-concussion-assessment-performance
#7
Michelle L Weber, John-Henry L Dean, Nicole L Hoffman, Steven P Broglio, Michael McCrea, Thomas W McAllister, Julianne D Schmidt, April Reed Hoy, Joseph B Hazzard, Louise A Kelly, Justus D Ortega, Nicholas Port, Margot Putukian, T Dianne Langford, Ryan Tierney, Darren E Campbell, Gerald McGinty, Patrick O'Donnell, Steven J Svoboda, John P DiFiori, Christopher C Giza, Holly J Benjamin, Thomas Buckley, Thomas W Kaminski, James R Clugston, Luis A Feigenbaum, James T Eckner, Kevin Guskiewicz, Jason P Mihalik, Jessica Dysart Miles, Scott Anderson, Christina L Master, Micky Collins, Anthony P Kontos, Jeffrey J Bazarian, Sara P D Chrisman, Allison Brooks, Stefan Duma, Christopher Todd Bullers, Christopher M Miles, Brian H Dykhuizen
BACKGROUND: A student-athlete's mental state, including history of trait anxiety and depression, or current psychological state may affect baseline concussion assessment performance. PURPOSE: (1) To determine if mental illness (anxiety, depression, anxiety with depression) influences baseline scores, (2) to determine if psychological state correlates with baseline performance, and (3) to determine if history of concussion affects Brief Symptom Inventory-18 (BSI-18) subscores of state anxiety, depression, and somatization...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29671493/the-female-athlete-triad-recommendations-for-management
#8
Rachel Chamberlain
No abstract text is available yet for this article.
April 15, 2018: American Family Physician
https://www.readbyqxmd.com/read/29668309/posttraumatic-osteoarthritis-development-and-progression-in-an-ovine-model-of-partial-anterior-cruciate-ligament-transection-and-effect-of-repeated-intra-articular-methylprednisolone-acetate-injections-on-early-disease
#9
Kristen I Barton, Bryan J Heard, Johnathan L Sevick, C Ryan Martin, S M Mehdi Shekarforoush, May Chung, Yamini Achari, Cyril B Frank, Nigel G Shrive, David A Hart
BACKGROUND: Partial anterior cruciate ligament (p-ACL) ruptures are a common injury of athletes. However, few preclinical models have investigated the natural history and treatment of p-ACL injuries. PURPOSE: To (1) demonstrate whether a controlled p-ACL injury model (anteromedial band transection) develops progressive gross morphological and histological posttraumatic osteoarthritis (PTOA)-like changes at 20 and 40 weeks after the injury and (2) investigate the efficacy of repeated (0, 5, 10, and 15 weeks) intra-articular injections of methylprednisolone acetate (MPA; 80 mg/mL) in the mitigation of potential PTOA-like changes after p-ACL transection...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29667867/excelling-at-youth-level-in-competitive-track-and-field-athletics-is-not-a-prerequisite-for-later-success
#10
Philip E Kearney, Philip R Hayes
Enhancing our understanding of athlete development would be valuable for coaches, parents and administrators to set realistic performance expectations and to advance youth sport policy. To this end, a database of track and field performances was examined. Records of 134,313 performances by athletes aged between 12 and 35 years in sprinting, throwing, jumping and middle distance events were analysed. Results revealed that a minority (Male, 9%; Female, 13%) of top 20 ranked senior athletes were also ranked in the top 20 at Under 13 (U13)...
April 18, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29667852/determination-of-the-position-of-the-knee-at-the-time-of-an-anterior-cruciate-ligament-rupture-for-male-versus-female-patients-by-an-analysis-of-bone-bruises
#11
Kwadwo A Owusu-Akyaw, Sophia Y Kim, Charles E Spritzer, Amber T Collins, Zoë A Englander, Gangadhar M Utturkar, William E Garrett, Louis E DeFrate
BACKGROUND: The incidence of anterior cruciate ligament (ACL) ruptures is 2 to 4 times higher in female athletes as compared with their male counterparts. As a result, a number of recent studies have addressed the hypothesis that female and male patients sustain ACL injuries via different mechanisms. The efficacy of prevention programs may be improved by a better understanding of whether there are differences in the injury mechanism between sexes. Hypothesis/Purpose: To compare knee positions at the time of a noncontact ACL injury between sexes...
April 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29664877/juvenile-osteochondritis-dissecans-of-the-trochlea-a-cohort-study-of-34-trochlear-lesions-associated-with-sporting-activities-that-load-the-patellofemoral-joint
#12
Meghan J Price, Maria Tuca, Joseph Nguyen, Jason Silberman, Eva Luderowski, Tyler J Uppstrom, Daniel W Green
BACKGROUND: Juvenile osteochondritis dissecans (JOCD) lesions are rarely located in the trochlea and few studies have focused on the causes and outcomes of JOCD lesions in this part of the knee. The purpose of this study is to (1) evaluate the clinical characteristics and outcomes of patients who undergo surgery for JOCD in this unusual location as well as (2) assess the association between trochlear JOCD and participation in sporting activities that load the patellofemoral joint. METHODS: We conducted a retrospective cohort study of 34 trochlear JOCD lesions in 30 patients...
April 16, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29662914/ligament-strain-response-between-lower-extremity-contralateral-pairs-during-in-vitro-landing-simulation
#13
April L McPherson, Nathanial A Bates, Nathan D Schilaty, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
Background: Limb asymmetries, as determined through in vivo biomechanical measures, are known risk factors for anterior cruciate ligament (ACL) injury. Previous cadaveric studies have shown a lack of significant differences in ligament strain between contralateral lower extremities when identical kinematics were simulated on specimens. Recent methodological developments have applied in vivo knee kinetics to exert landing forces on cadaveric lower extremities to mimic ACL injury events, but it is unknown whether contralateral limbs fail in a consistent manner during impact simulator testing...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662910/outcomes-and-return-to-sport-after-revision-anterior-cruciate-ligament-reconstruction-in-adolescent-athletes
#14
Michael Saper, Stephanie Pearce, Joseph Shung, Robert Zondervan, Roger Ostrander, James R Andrews
Background: The number of adolescent anterior cruciate ligament (ACL) injuries is rising with increased participation in higher level athletics at earlier ages. With an increasing number of primary ACL reconstructions (ACLRs) comes a rise in the incidence of revision ACLRs. Purpose: To evaluate the clinical results of revision ACLR across a group of high-level adolescent athletes with at least 2-year follow-up. Study Design: Case series; Level of evidence, 4...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662894/body-image-of-highly-trained-female-athletes-engaged-in-different-types-of-sport
#15
Adam Kantanista, Agata Glapa, Adrianna Banio, Wiesław Firek, Anna Ingarden, Ewa Malchrowicz-Mośko, Paweł Markiewicz, Katarzyna Płoszaj, Mateusz Ingarden, Zuzanna Maćkowiak
Background: The aim of the study was to evaluate differences in body image across different types of sports in highly trained female athletes. Methods: 242 female individuals, aged 13-30 years (M = 20.0, SD = 4.5), representing aesthetic sports ( n = 56) and nonaesthetic sports ( n = 186), were recruited from different sports clubs in Poland. Body image, BMI, age, the level of competition attained, and the training background of participants were recorded. Results: One-way ANOVA showed differences in the body image of athletes engaged in different types of sport ( F (11,230) = 4...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29659886/bone-parameters-in-anorexia-nervosa-and-athletic-amenorrhea-comparison-of-two-hypothalamic-amenorrhea-states
#16
Nurgun Kandemir, Meghan Slattery, Kathryn E Ackerman, Shreya Tulsiani, Amita Bose, Vibha Singhal, Charumathi Baskaran, Seda Ebrahimi, Mark Goldstein, Kamryn Eddy, Anne Klibanski, Madhusmita Misra
Purpose: We have reported low bone mineral density (BMD), impaired bone structure, and increased fracture risk in anorexia nervosa (AN) and normal-weight, oligo-amenorrheic athletes (OA). However, data directly comparing compartment-specific bone parameters in AN, OA and controls are lacking. Methods: 426 females 14-21.9 years old were included; 231 AN, 94 OA and 101 normal-weight eumenorrheic controls. Dual energy x-ray absorptiometry was used to assess areal BMD (aBMD) of the whole body less head (WBLH), spine, and hip...
April 5, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29659298/agreement-between-visual-assessment-and-2-dimensional-analysis-during-jump-landing-among-healthy-female-athletes
#17
Alon Rabin, Ofira Einstein, Zvi Kozol
CONTEXT:   Altered movement patterns, including increased frontal-plane knee movement and decreased sagittal-plane hip and knee movement, have been associated with several knee disorders. Nevertheless, the ability of clinicians to visually detect such altered movement patterns during high-speed athletic tasks is relatively unknown. OBJECTIVE:   To explore the association between visual assessment and 2-dimensional (2D) analysis of frontal-plane knee movement and sagittal-plane hip and knee movement during a jump-landing task among healthy female athletes...
April 16, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29657113/strategic-acoustic-control-of-a-hummingbird-courtship-dive
#18
Christopher J Clark, Emily A Mistick
Male hummingbirds court females with a high-speed dive in which they "sing" with their tail feathers. The male's choice of trajectory provides him strategic control over acoustic frequency and pressure levels heard by the female. Unlike related species, male Costa's hummingbirds (Calypte costae) choose to place their dives to the side of females. Here we show that this minimizes an audible Doppler curve in their dive sound, thereby depriving females of an acoustic indicator that would otherwise reveal male dive speed...
March 31, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29652732/female-athlete-issues-for-the-team-physician-a-consensus-statement-2017-update
#19
(no author information available yet)
No abstract text is available yet for this article.
May 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29651902/shoulder-and-lower-back-joint-reaction-forces-in-seated-double-poling
#20
Marie Lund Ohlsson, Jonas Danvind, L Joakim Holmberg
Overuse injuries in the shoulders and lower back are hypothesized to be common in cross-country sit-skiing. Athletes with reduced trunk muscle control mainly sits with their knees higher than hips (KH). To reduce spinal flexion, a position with the knees below the hips (KL) was enabled for these athletes using a frontal trunk support. The aim of the study was to compare the shoulder joint (glenohumeral joint) and L4-L5 joint reactions between the sitting positions KL and KH. Five able-bodied female athletes performed submaximal and maximal exercise tests in the sitting positions KL and KH on a ski-ergometer...
April 13, 2018: Journal of Applied Biomechanics
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