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https://www.readbyqxmd.com/read/28927669/are-the-hamstrings-from-the-drive-leg-or-landing-leg-more-active-in-baseball-pitchers-an-electromyographic-study
#1
Brandon J Erickson, Antonia Zaferiou, Peter N Chalmers, Deana Ruby, Phillip Malloy, Timothy J Luchetti, Nikhil N Verma, Anthony A Romeo
BACKGROUND: Ulnar collateral ligament reconstruction (UCLR) has become a common procedure among baseball players of all levels. There are several graft choices in performing UCLR, one of which is a hamstring (gracilis or semitendinosus) autograft. It is unclear whether the hamstring muscle from a pitcher's drive leg (ipsilateral side of the UCLR) or landing leg (contralateral side of the UCLR) is more active during the pitching motion. We hypothesized that the landing leg semitendinosus will be more electromyographically active than the drive leg...
September 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28915360/risk-factors-for-reoperation-and-performance-based-outcomes-after-operative-fixation-of-foot-fractures-in-the-professional-athlete-a-cross-sport-analysis
#2
Sameer Singh, Kevin Larkin, Anish Kadakia, Wellington Hsu
BACKGROUND: Professional athletes are predisposed to fractures of the foot due to large stresses placed on the lower extremity. These players are concerned with efficiently returning to play at a high level. Return-to-play rates after operative treatment have been previously reported, yet performance outcomes after such treatment are generally unknown in this population. HYPOTHESIS: Overall, professional athletes sustaining a foot fracture would return to play at high rates with little impact on post-operative performance or league participation...
September 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28865566/decreased-shoulder-external-rotation-and-flexion-are-greater-predictors-of-injury-than-internal-rotation-deficits-analysis-of-132-pitcher-seasons-in-professional-baseball
#3
Christopher L Camp, John M Zajac, David B Pearson, Alec M Sinatro, Andrea M Spiker, Brian C Werner, David W Altchek, Struan H Coleman, Joshua S Dines
PURPOSE: The primary aims of this work were to (1) describe normal range of motion (ROM) profiles for elite pitchers, (2) describe the characteristics of shoulder and elbow injuries in professional pitchers over a 6-year period in one Major League Baseball organization, and (3) identify ROM measures that were independently associated with a future shoulder or elbow injury. METHODS: Over 6 seasons (2010-2015), a preseason assessment was performed on all pitchers invited to Major League Baseball Spring Training for a single organization...
September 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28858061/evaluating-the-effects-of-under-loaded-and-overloaded-warm-ups-on-subsequent-swing-velocity
#4
Ryan M Miller, Aaron D Heishman, Eduardo D S Freitas, Michael G Bemben
Several attempts to identify the optimal on deck procedure to enhance swing velocity in baseball have been made. However, inconsistent findings continue to constitute much of the body of literature. Additionally, the emergence of athlete monitoring in sport has led to the exploration of more sport specific tasks to potentially identify athlete fatigue and readiness to perform. Therefore, the purpose of this investigation was to examine three different bat weight warm up protocols on subsequent swing velocity and to examine the reliability of swing velocity measurements to allude to its potential a sport specific athlete monitoring metric...
August 26, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28811750/availability-of-a-sports-dietitian-may-lead-to-improved-performance-and-recovery-of-ncaa-division-i-baseball-athletes
#5
Michael V Hull, Jonathan Neddo, Andrew R Jagim, Jonathan M Oliver, Mike Greenwood, Margaret T Jones
BACKGROUND: The purpose was to survey dietary habits (DH) and nutrient timing (NT) practices of baseball student-athletes (mean ± SD; 20.7 ± 1.4 yr.) from three NCAA Division I institutions, and examine the effect of a sports dietitian (SD) in regard to nutrition practices. METHODS: Descriptive statistics and Pearson X(2) analyses were run. Responses on 10 DH and 5 NT items differed (p ≤ 0.10) between athletes who sought dietary planning from a SD (n = 36) versus those who consulted a strength and conditioning coach (SCC, n = 42)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28806094/the-relationship-of-throwing-arm-mechanics-and-elbow-varus-torque-within-subject-variation-for-professional-baseball-pitchers-across-82-000-throws
#6
Christopher L Camp, Travis G Tubbs, Glenn S Fleisig, Joshua S Dines, David M Dines, David W Altchek, Brittany Dowling
BACKGROUND: Likely due to the high level of strain exerted across the elbow during the throwing motion, elbow injuries are on the rise in baseball. To identify at-risk athletes and guide postinjury return-to-throw programs, a better understanding of the variables that influence elbow varus torque is desired. PURPOSE: To describe the within-subject relationship between elbow varus torque and arm slot and arm rotation in professional baseball pitchers. STUDY DESIGN: Descriptive laboratory study...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28781974/do-major-league-baseball-team-physicians-harvest-the-semitendinosus-from-the-drive-leg-or-landing-leg-when-performing-ulnar-collateral-ligament-reconstruction-on-elite-baseball-pitchers
#7
Brandon J Erickson, Peter N Chalmers, Jeffrey R Dugas, Bernard R Bach, Gregory P Nicholson, Nikhil N Verma, Christopher S Ahmad, Anthony A Romeo
BACKGROUND: Hamstring autograft is a common graft choice when performing ulnar collateral ligament reconstruction (UCLR). PURPOSE/HYPOTHESIS: The purpose of this study was to survey Major League Baseball (MLB) team physicians and determine whether these physicians harvest the hamstring (semitendinosus or gracilis) from the drive leg (ipsilateral to surgical site) or landing leg (contralateral to surgical site) when performing UCLR on elite-level pitchers. The hypothesis was that the majority of surgeons harvest the hamstring from the drive leg when performing a UCLR...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28759535/relationship-between-physical-fitness-at-the-end-of-pre-season-and-the-in-season-game-performance-in-japanese-female-professional-baseball-players
#8
Yuya Watanabe, Yosuke Yamada, Tsukasa Yoshida, Tomoyuki Matsui, Kazuya Seo, Yoshikazu Azuma, Machiko Hiramoto, Yuichiro Miura, Hideaki Fukushima, Akito Shimazu, Toshiaki Eto, Homare Saotome, Noriyuki Kida, Toru Morihara
This study examined anthropometric and fitness profiles of Japanese female professional baseball players and investigated the relationship between players' physical fitness and in-season game performance. Fifty-seven players who were registered in the Japan Women's Baseball League (JWBL) participated. Height, weight, grip strength, back strength, knee-extension and -flexion strength, hamstring extensibility, vertical jump height, and horizontal jump distance were measured at pre-season (February and March) in 2013...
July 28, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28734533/changes-in-pitching-mechanics-after-ulnar-collateral-ligament-reconstruction-in-major-league-baseball-pitchers
#9
Daniel A Portney, Jake M Lazaroff, Lucas T Buchler, Stephen M Gryzlo, Matthew D Saltzman
BACKGROUND: Medial ulnar collateral ligament (UCL) reconstruction is a common procedure performed on Major League Baseball pitchers. Variations in pitching mechanics before and after UCL reconstructive surgery are not well understood. METHODS: Publicly available pitch tracking data (PITCHf/x) were compared for all Major League Baseball pitchers who underwent UCL reconstruction between 2008 and 2013. Specific parameters analyzed were fastball percentage, release location, velocity, and movement of each pitch type...
August 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28719454/the-difference-in-clinical-outcomes-after-anterior-cervical-fusion-disk-replacement-and-foraminotomy-in-professional-athletes
#10
Harry T Mai, Danielle S Chun, Andrew D Schneider, Andrew C Hecht, Joseph C Maroon, Wellington K Hsu
STUDY DESIGN: Retrospective case series. OBJECT: To compare postoperative outcomes of professional athletes treated for cervical disk herniation after anterior cervical discectomy and fusion (ACDF) and posterior foraminotomy (PF), or total disk replacement (TDR). SUMMARY OF BACKGROUND DATA: ACDF, PF, and TDR have all led to excellent outcomes in the general population but the unique demands in the professional athlete necessitate specific study...
July 17, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28714783/performance-outcomes-after-hook-of-hamate-fractures-in-major-league-baseball-players
#11
Michael S Guss, John P Begly, Austin J Ramme, David P Taormina, Michael E Rettig, John T Capo
CONTEXT: Major League Baseball (MLB) players are at risk of hook of hamate fractures. There is a paucity of data assessing the effect of a hook of hamate fracture on MLB players' future athletic performance. OBJECTIVE: To determine if MLB players who sustain hook of hamate fractures demonstrate decreased performance upon return to competition when compared with their performance before injury and that of their control-matched peers. DESIGN: Retrospective Case-Control Design...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28713174/fusing-multiple-neuroimaging-modalities-to-assess-group-differences-in-perception-action-coupling
#12
Jordan Muraskin, Jason Sherwin, Gregory Lieberman, Javier O Garcia, Timothy Verstynen, Jean M Vettel, Paul Sajda
In the last few decades, non-invasive neuroimaging has revealed macro-scale brain dynamics that underlie perception, cognition and action. Advances in non-invasive neuroimaging target two capabilities; 1) increased spatial and temporal resolution of measured neural activity, and 2) innovative methodologies to extract brain-behavior relationships from evolving neuroimaging technology. We target the second. Our novel methodology integrated three neuroimaging methodologies and elucidated expertise-dependent differences in functional (fused EEG-fMRI) and structural (dMRI) brain networks for a perception-action coupling task...
January 2017: Proceedings of the IEEE
https://www.readbyqxmd.com/read/28690460/analysis-of-player-statistics-in-major-league-baseball-players-before-and-after-achilles-tendon-repair
#13
Bryan M Saltzman, Matthew W Tetreault, Daniel D Bohl, Danielle Tetreault, Simon Lee, Bernard R Bach
BACKGROUND: No currently available literature evaluates the effect of Achilles tendon repair on professional baseball players in the Major League Baseball (MLB). QUESTIONS/PURPOSES: The purpose of this study was to determine the impact of Achilles tendon rupture and repair on MLB players in terms of return to play and batting/fielding performance metrics. METHODS: Achilles tendon rupture data were retrospectively collected using information from the MLB disabled list, injury reports, MLB game summaries, player profiles, and publicly available news articles...
July 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28689823/performance-and-return-to-sport-in-elite-baseball-players-and-recreational-athletes-following-repair-of-the-latissimus-dorsi-and-teres-major
#14
Brandon J Erickson, Peter N Chalmers, Brian R Waterman, Justin W Griffin, Anthony A Romeo
BACKGROUND: Tears of the latissimus dorsi (LD) and teres major (TM) are rare but disabling injuries in the overhead athlete. METHODS: All patients who underwent an LD and/or TM repair between January 1, 2010, and June 6, 2016, with more than 12 months' follow-up were included. Demographic information and postoperative range of motion were recorded. Patients were contacted via phone and answered questions to provide the following: Kerlan-Jobe Orthopaedic Clinic (KJOC) shoulder and elbow outcome score, American Shoulder and Elbow Surgeons (ASES) shoulder score, and visual analog scale (VAS) score...
July 6, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28673735/properties-of-paraspinal-muscles-in-japanese-high-school-baseball-players-with-terminal-stage-lumbar-spondylolysis
#15
Hiroyuki Tsuboi, Yukihide Nishimura, Takeshi Sakata, Hideaki Tanina, Hideki Arakawa, Takeshi Nakamura, Yuichi Umezu, Fumihiro Tajima
BACKGROUND: Lumbar spondylolysis is a defect in the pars interarticularis that is common in young athletes; the stress distribution at the pars interarticularis is the highest in extension and rotation movements. The paraspinal muscles play an important role in stabilization of the lumbar spine; however, no study has assessed the properties of paraspinal muscles in athletes with lumbar spondylolysis. OBJECTIVE: To evaluate the properties of paraspinal muscles in athletes with lumbar spondylolysis...
June 30, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28646506/three-lessons-for-genetic-toxicology-from-baseball-analytics
#16
EDITORIAL
Stephen D Dertinger
In many respects the evolution of baseball statistics mirrors advances made in the field of genetic toxicology. From its inception, baseball and statistics have been inextricably linked. Generations of players and fans have used a number of relatively simple measurements to describe team and individual player's current performance, as well as for historical record-keeping purposes. Over the years, baseball analytics has progressed in several important ways. Early advances were based on deriving more meaningful metrics from simpler forerunners...
July 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28644678/professional-athletes-return-to-play-and-performance-after-operative-repair-of-an-achilles-tendon-rupture
#17
David P Trofa, J Chance Miller, Eugene S Jang, Denzel R Woode, Justin K Greisberg, J Turner Vosseller
BACKGROUND: Most Achilles tendon ruptures are sports related. However, few studies have examined and compared the effect of surgical repair for complete ruptures on return to play (RTP), play time, and performance across multiple sports. PURPOSE: To examine RTP and performance among professional athletes after Achilles tendon repair and compare pre- versus postoperative functional outcomes of professional athletes from different major leagues in the United States...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28638354/investigating-team-coordination-in-baseball-using-a-novel-joint-decision-making-paradigm
#18
Rob Gray, Nancy J Cooke, Nathan J McNeese, Jaimie McNabb
A novel joint decision making paradigm for assessing team coordination was developed and tested using baseball infielders. Balls launched onto an infield at different trajectories were filmed using four video cameras that were each placed at one of the typical positions of the four infielders. Each participant viewed temporally occluded videos for one of the four positions and were asked to say either "ball" if they would attempt to field it or the name of the bag that they would cover. The evaluation of two experienced coaches was used to assign a group coordination score for each trajectory and group decision times were calculated...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28632045/comparison-of-crossover-and-jab-step-start-techniques-for-base-stealing-in-baseball
#19
Tomohisa Miyanishi, So Endo, Ryu Nagahara
Base stealing is an important tactic for increasing the chance of scoring in baseball. This study aimed to compare the crossover step (CS) and jab step (JS) starts for base stealing start performance and to clarify the differences between CS and JS starts in terms of three-dimensional lower extremity joint kinetics. Twelve male baseball players performed CS and JS starts, during which their motion and the force they applied to the ground were simultaneously recorded using a motion-capture system and two force platforms...
November 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28605316/examining-differences-in-movement-competency-in-professional-baseball-players-born-in-the-united-states-and-dominican-republic
#20
Garrett S Bullock, Taylor Chapman, Thomas Joyce, Robert Prengle, Taylor Stern, Robert J Butler
CONTEXT: Dominican Republic (DR) players have different training norms, which can affect their resiliency and performance. The variance among DR players training regimens may be influenced by the degree of training incorporating fundamental movement patterns. OBJECTIVE: To examine differences in fundamental movement patterns in United States (US) versus DR born professional baseball players. PARTICIPANTS: 142 players (76 DR and 66 US born) that were recently selected by an MLB team...
June 12, 2017: Journal of Sport Rehabilitation
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