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https://www.readbyqxmd.com/read/28918516/valve-sparing-aortic-root-surgery-con-remodeling
#1
Takashi Kunihara
The two major valve-sparing root replacement procedures, aortic valve reimplantation (reimplantation) and aortic root remodeling (remodeling), have advantages and disadvantages, which are reviewed herein. The main advantage of reimplantation is the resulting annular support, and the disadvantages are the unfavorable hemodynamics and relatively long procedure time. The main advantages of remodeling are the physiological hemodynamics and decreased procedure time, and the disadvantage is the lack of annular support...
September 16, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28918506/young-athletes-after-acl-reconstruction-with-quadriceps-strength-asymmetry-at-the-time-of-return-to-sport-demonstrate-decreased-knee-function-1%C3%A2-year-later
#2
Matthew P Ithurburn, Alex R Altenburger, Staci Thomas, Timothy E Hewett, Mark V Paterno, Laura C Schmitt
PURPOSE: Quadriceps femoris (QF) strength deficits at return-to-sport (RTS) after ACL reconstruction (ACLR) contribute to decreased knee function at the same time point. However, the impact of QF strength at RTS on longitudinal function has not been examined. The purpose of this study was to test the hypothesis that young athletes after ACLR with QF strength asymmetry at RTS would demonstrate decreased knee-related function and lower proportions of functional recovery at 1 year post-RTS compared to young athletes following ACLR with nearly symmetric QF strength at RTS...
September 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28918391/genetic-polymorphisms-associated-with-the-risk-of-concussion-in-1056-college-athletes-a-multicentre-prospective-cohort-study
#3
Thomas Roland Terrell, Ruth Abramson, Jeffery T Barth, Ellen Bennett, Robert C Cantu, Richard Sloane, Daniel T Laskowitz, David M Erlanger, Douglas McKeag, Gregory Nichols, Verle Valentine, Leslie Galloway
BACKGROUND/AIM: To evaluate the association of genetic polymorphisms APOE, APOE G-219T promoter, microtubule associated protein(MAPT)/tau exon 6 Ser(53)Pro, MAPT/tau Hist(47)Tyr, IL-6572 G/C and IL-6R(Asp)358(Ala) with the risk of concussion in college athletes. METHODS: A 23-centre prospective cohort study of 1056 college athletes with genotyping was completed between August 2003 and December 2012. All athletes completed baseline medical and concussion questionnaires, and post-concussion data were collected for athletes with a documented concussion...
September 16, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28918117/mild-traumatic-brain-injury-in-a-high-school-football-player-with-familial-hemiplegic-migraine-a-case-report
#4
Manisha R Chand, Sumit Kanwar, Evan Peck
Mild traumatic brain injury is a major concern in young athletes, with an estimated 1.6 to 3.8 million reported concussions in the US annually. Familial hemiplegic migraine is a rare autosomal-dominant condition characterized by sporadic episodes of transient unilateral motor weakness which may begin at any age. We present a case of a 17-year-old male with a history of familial hemiplegic migraine who suffered prolonged symptoms following a mild traumatic brain injury during sports participation.
September 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28917521/midterm-results-of-combined-intra-and-extra-articular-acl-reconstruction-compared-to-historical-acl-reconstruction-data-multicenter-study-of-the-francophone-society-of-arthroscopy
#5
P Imbert, S Lustig, C Steltzlen, C Batailler, P Colombet, F Dalmay, S Bertiaux, P D'ingrado, F P Ehkirch, M L Louis, R Pailhé, J C Panisset, B Schlaterrer, B Sonnery-Cottet, L Sigwalt, D Saragaglia, C Lutz
INTRODUCTION: During anterior cruciate ligament (ACL) reconstruction procedures, anterolateral reconstruction (ALR) can also be performed to improve the knee's rotational stability. However, the effectiveness of this supplemental technique and its impact on the risk of retears and on the onset of secondary degenerative changesare controversial. HYPOTHESIS: ALR improves control over the pivot shift, reduces the retear risk and delays the appearance of secondary degenerative lesions...
September 13, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28915772/hypermobility-in-adolescent-athletes-pain-functional-ability-quality-of-life-and-musculoskeletal-injuries
#6
Heidi Schmidt, Trine Lykke Pedersen, Tina Junge, Raoul Engelbert, Birgit Juul-Kristensen
Study Design Cross-sectional. Background Generalised joint hypermobility (GJH) may increase pain and likelihood of injuries and also decrease function and health-related quality of life (HRQoL) in elite level adolescent athletes. Objectives To assess the prevalence of GJH in elite level adolescent athletes, and to study the association of GJH with pain, function, HRQoL, and musculoskeletal injuries. Methods A total of 132 elite level adolescent athletes (36 males; 96 females), mean (SD) age 14.0 (0.9) years, participated (n=22 ballet dancers, n=57 teamgym gymnasts, n=53 team handball players)...
September 15, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28912731/long-term-athletic-development-in-youth-alpine-ski-racing-the-effect-of-physical-fitness-ski-racing-technique-anthropometrics-and-biological-maturity-status-on-injuries
#7
Lisa Müller, Carolin Hildebrandt, Erich Müller, Christian Fink, Christian Raschner
Alpine ski racing is known to be a sport with a high risk of injuries. Because most studies have focused mainly on top-level athletes and on traumatic injuries, limited research exists about injury risk factors among youth ski racers. The aim of this study was to determine the intrinsic risk factors (anthropometrics, biological maturity, physical fitness, racing technique) for injury among youth alpine ski racers. Study participants were 81 youth ski racers attending a ski boarding school (50 males, 31 females; 9-14 years)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28912654/reduced-spanish-version-of-participation-motives-questionnaire-for-exercise-and-sport-psychometric-properties-social-sport-differences
#8
María Del Pilar Vílchez, Cristina De Francisco
Understanding the motives that influence physical activity participation is important in order to orientate physical activity promotion and increase physical activity levels of practice of the population. Although many instruments been created and validated to measure motives to perform physical activity, one of the most frequently used scales during years is the Participation of Motives Questionnaire (PMQ) by Gill et al. (1983). Unfortunately, despite being so used and translated into many languages, there is no psychometric support for some factors about due to a low internal consistency...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28910993/transtendon-repair-in-partial-articular-supraspinatus-tendon-tear
#9
Leonardo Osti, Matteo Buda, Mattia Andreotti, Raffaella Osti, Leo Massari, Nicola Maffulli
Introduction: Partial thickness rotator cuff tears (PTRCTs) are common, with an incidence between 17% and 37%, and a high prevalence in throwing athletes. Different surgical procedures are suggested when partial tears involve the articular portion of the rotator cuff, including arthroscopic debridement of the tear, debridement with acromioplasty, tear completion and repair, and lately transtendon repair. This systematic review describes the transtendon repair and examines indications, contraindications, complications and clinical outcome...
September 1, 2017: British Medical Bulletin
https://www.readbyqxmd.com/read/28904982/preseason-aerobic-fitness-predicts-in-season-injury-and-illness-in-female-youth-athletes
#10
Andrew Watson, Stacey Brickson, M Alison Brooks, Warren Dunn
BACKGROUND: Although preseason aerobic fitness has been suggested as a modifiable risk factor for injury in adult athletes, the relationship between aerobic fitness, injury, and illness in youth athletes is unknown. PURPOSE: To determine whether preseason aerobic fitness predicts in-season injury and illness risk in female adolescent soccer players. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Fifty-four female adolescent soccer players underwent preseason evaluation to determine years of experience, body mass index (BMI), maximal aerobic capacity (VO2max), and time to exhaustion (Tmax) during cycle ergometer testing...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28902125/epidemiology-of-youth-boys-and-girls-lacrosse-injuries-in-the-2015-2016-seasons
#11
Zachary Y Kerr, Andrew E Lincoln, Thomas Dodge, Susan W Yeargin, Tracey M Covassin, Vincent C Nittoli, James Mensch, Karen G Roos, Thomas P Dompier, Shane V Caswell
PURPOSE: Examinations of injury among younger populations of lacrosse players that are beginning their development is limited. This study describes the epidemiology of youth boys' and girls' lacrosse injuries during the 2015-2016 seasons. METHODS: Surveillance data originated from a convenience sample of 10 leagues in five states with 1090 boys' and 480 girls' lacrosse players from the U9-U15 divisions. Athletic trainers reported injury and exposure data at games and practices...
September 7, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28902119/determination-of-vertical-jump-as-a-measure-of-neuromuscular-readiness-and-fatigue
#12
Casey M Watkins, Saldiam R Barillas, Megan A Wong, David C Archer, Ian J Dobbs, Robert G Lockie, Jared W Coburn, Tai T Tran, Lee E Brown
Coaches closely monitor training loads and periodize sessions throughout the season to create optimal adaptations at the proper time. However, only monitoring training loads ignores the innate physiological stress each athlete feels individually. Vertical jump (VJ) is widely used as a measure of lower body power, and has been used in post-match studies to demonstrate fatigue levels. However, no pre-training monitoring via VJ performance has been previously studied. Therefore, the purpose of this study was to determine the sensitivity of VJ as a measure of readiness and fatigue on a daily sessional basis...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902114/effects-of-repeated-sprints-with-changes-of-direction-on-youth-soccer-player-s-performance-impact-of-initial-fitness-level
#13
Fábio Y Nakamura, Javier Sanchez-Sanchez, Rodrigo Ramirez-Campillo, Cristina Petisco, Oliver Gonzalo-Skok, Alejandro Rodriguez-Fernandez, Javier Miñano
The aim of this study was to assess the effect of an 8-week repeated sprint with change of direction training program on repeated sprint, intermittent endurance and change of direction performance in youth soccer players with different aerobic fitness levels. Athletes were randomly assigned into a soccer-only (n=9; age, 14.9±0.4 yr) and soccer plus repeated sprint with change of direction (RS-COD) training programs for players with high (n=10; age, 14.4±0.5 yr) and low (n=10; age, 14.4±0.5 yr) aerobic fitness...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902111/the-influence-of-foam-rolling-on-recovery-from-exercise-induced-muscle-damage
#14
Anthony P D'Amico, Jason Gillis
The purpose of this study was to examine the impact of foam rolling (FR) on recovery from exercise-induced muscle damage (EIMD). Thirty-seven males performed 40 x 15 m sprints, inducing muscle damage. Immediately following sprinting and in the four days following, perceived muscle soreness, hip abduction range of motion (ROM), hamstring muscle length, vertical jump, and agility measures were recorded. Eighteen subjects (mean ± sd; age 22.4 ± 2.0 yrs; BMI 26.9 ± 4.2 kgm) foam rolled prior to testing each day (FR), while 19 (mean ± sd; age 23...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902110/asymmetrie-of-maximum-trunk-hand-and-leg-in-comparison-of-volleyball-and-fitness-athletes
#15
Klaus Mattes, Bettina Wollesen, Stefanie Manzer
Playing volleyball and corresponding training loads lead to specific strains and might result in asymmetric muscle pattern. The study aimed to identify volleyball specific maximum bilateral strength asymmetries in comparison to fitness athletes. The cross-sectional study design compared an age-matched male volleyball group (n= 23; 27.9 ± 5 years) with a fitness group (n= 30; 26.3 ± 3 years). The participants performed an isometric maximum handgrip strength test followed by two isokinetic concentric maximum strength tests to determine the performance capacity of the axial trunk rotators (left-right) and bilateral leg extensors...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902107/reliability-of-the-maximal-resisted-sprint-load-test-and-relationships-with-performance-measures-and-anthropometric-profile-in-female-field-sport-athletes
#16
George Petrakos, Nicola C Tynan, Adam M Vallely-Farrell, Cillian Kiely, Abdelhak Boudhar, Brendan Egan
Resisted sled sprint (RSS) training is an effective modality for the improvement of linear sprint speed. Previous methods of RSS load prescription e.g. an absolute load or as a percentage of body mass (%BM), do not account for inter-individual differences in strength, power or speed characteristics, although the 'maximum resisted sled load' (MRSL) method of RSS load prescription may provide a solution. MRSL is defined as the final RSS load before an athlete can no longer accelerate between two phases (10-15 m and 15-20 m) of a 20 m linear sprint...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28901201/sex-differences-in-balance-among-alpine-ski-racers-cross-sectional-age-comparisons
#17
Christian Raschner, Carolin Hildebrandt, Johanna Mohr, Lisa Müller
Although balance is a key ability in the strength demands of alpine ski racing, affecting both performance and injury prevention, few studies have examined balance or related sex differences among still-maturing athletes. In this 10-year study, we investigated cross-sectional balance performances at different age periods of a representative sample of over 500 11-18-year-old elite skiers of both genders. Participants performed balance tests using the MFT S3-Check. Left-right and forward-backward movements were used to calculate sensory and symmetry balance scores, which were both incorporated into a stability score...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28900567/the-comparison-of-the-lumbar-multifidus-muscles-function-between-gymnastic-athletes-with-sway-back-posture-and-normal-posture
#18
Elnaz Mahdavie, Asghar Rezasoltani, Leila Simorgh
BACKGROUND: The prevalence of sway back posture (SBP) is very high among elite gymnasts. This posture may be partly due to the improper function of lumbar multifidus muscles (LMM) as lumbar stabilizers muscles. PURPOSE: The aim of this study was to compare the thicknesses of LMM measured at rest and during the contraction elicited during an arm lift between elite gymnasts with SBP and normal posture. STUDY DESIGN: Observational, descriptive, comparative...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28900564/relationships-among-common-vision-and-vestibular-tests-in-healthy-recreational-athletes
#19
John D Heick, Curt Bay, Thomas P Dompier, Tamara C Valovich McLeod
BACKGROUND: Disruption of the visual and vestibular systems is commonly observed following concussion. Researchers have explored the utility of screening tools to identify deficits in these systems in concussed patients, but it is unclear if these tests are measuring similar or distinct phenomena. PURPOSE: To determine the relationships between common vestibular tests including the King-Devick (K-D) test, Sensory Organization Test (SOT), Head Shake-Sensory Organization Test (HS-SOT), and Dynamic Visual Acuity (DVA) test, when administered contiguously, to healthy recreational athletes aged 14 to 24 years...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28900560/building-a-better-gluteal-bridge-electromyographic-analysis-of-hip-muscle-activity-during-modified-single-leg-bridges
#20
B J Lehecka, Michael Edwards, Ryan Haverkamp, Lani Martin, Kambry Porter, Kailey Thach, Richard J Sack, Nils A Hakansson
BACKGROUND: Gluteal strength plays a role in injury prevention, normal gait patterns, eliminating pain, and enhancing athletic performance. Research shows high gluteal muscle activity during a single-leg bridge compared to other gluteal strengthening exercises; however, prior studies have primarily measured muscle activity with the active lower extremity starting in 90 ° of knee flexion with an extended contralateral knee. This standard position has caused reports of hamstring cramping, which may impede optimal gluteal strengthening...
August 2017: International Journal of Sports Physical Therapy
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