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https://www.readbyqxmd.com/read/27864504/youth-baseball-pitching-stride-length-normal-values-and-correlation-with-field-testing
#1
Karl E Fry, Andrew Pipkin, Kelcie Wittman, Scott Hetzel, Marc Sherry
BACKGROUND: Pitching biomechanical analysis has been recommended as an important component of performance, injury prevention, and rehabilitation. Normal values for youth pitching stride length have not been established, leading to application of normative values found among professional pitchers to youth pitchers. HYPOTHESES: The average youth pitching stride length will be significantly less than that of college and professional pitchers. There will be a positive correlation between stride length, lower extremity power, balance, and pitching experience...
November 18, 2016: Sports Health
https://www.readbyqxmd.com/read/27852593/humeral-retrotorsion-and-glenohumeral-motion-in-youth-baseball-players-compared-with-age-matched-nonthrowing-athletes
#2
Elliot M Greenberg, J Todd R Lawrence, Alicia Fernandez-Fernandez, Philip McClure
BACKGROUND: Baseball players exhibit a more posteriorly oriented humeral head in their throwing arm. This is termed humeral retrotorsion (HRT) and likely represents a response to the stress of throwing. This adaptation is thought to occur while the athlete is skeletally immature, however currently there is limited research detailing how throwing activity in younger players influences the development of HRT. In addition, it is presently unclear how this changing osseous orientation may influence shoulder motion within young athletes...
November 16, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27771737/youth-baseball-players-with-elbow-and-shoulder-pain-have-both-low-back-and-knee-pain-a-cross-sectional-study
#3
Takuya Sekiguchi, Yoshihiro Hagiwara, Haruki Momma, Masahiro Tsuchiya, Kaoru Kuroki, Kenji Kanazawa, Yutaka Yabe, Masashi Koide, Nobuyuki Itaya, Eiji Itoi, Ryoichi Nagatomi
PURPOSE: Serious arm injuries in youth baseball players have been increasing. Though a breakage in the kinetic chain could affect arm injuries, an association between arm injuries and insufficient support of the trunk and lower extremities is not well understood. The purpose of this study was to investigate the association of low back and knee pain with elbow and/or shoulder complaints among youth baseball players. METHODS: A self-administered questionnaire and document informed consent were mailed to youth athletes belonging to the Miyagi Amateur Sports Association...
October 22, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27753641/trunk-muscle-function-deficit-in-youth-baseball-pitchers-with-excessive-contralateral-trunk-tilt-during-pitching
#4
Sakiko Oyama, Andrew G Waldhelm, Araceli R Sosa, Ravina R Patel, Derick L Kalinowski
OBJECTIVE: Pitching technique is one of many factors that affect injury risk. Exhibiting excessive contralateral trunk tilt (CLT) during pitching has been linked to higher ball speed but also to increased joint loading. Deficit in trunk muscle strength has been suggested as an underlying cause of this movement pattern. The purpose of the study was to compare trunk muscle strength between youth baseball pitchers with varying degree of CLT during pitching. DESIGN: Cross-sectional study...
October 6, 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/27713579/differences-in-hip-range-of-motion-among-collegiate-pitchers-when-compared-to-youth-and-professional-baseball-pitcher-data
#5
Scott W Cheatham, Kathryn Kumagai Shimamura, Morey J Kolber
The purpose of this study was to measure passive hip internal (IR) and external rotation (ER) range of motion (ROM) in collegiate baseball pitchers and compare to published youth and professional values. Measures were taken on the bilateral hips of 29 participants (mean age 20.0±1.4, range 18-22 years). Results identified no significant differences between the stance and stride hip in collegiate right handed pitchers for IR (p= 0.22, ES 0.23) and ER (p=.08, ES= 0.25). There was no significant difference in left handed pitchers for IR (p= 0...
September 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/27644553/outcome-of-an-elbow-check-up-system-for-child-and-adolescent-baseball-players
#6
Toshiyuki Iwame, Tetsuya Matsuura, Naoto Suzue, Shinji Kashiwaguchi, Takenobu Iwase, Shoji Fukuta, Daisuke Hamada, Tomohiro Goto, Takahiko Tsutsui, Keizo Wada, Hiroshi Egawa, Akihiro Nagamachi, Koichi Sairyo
PURPOSE: Our aim was to examine the outcome of an elbow check-up system for youth baseball players. In particular, we investigated the nature of elbow injuries in youth baseball players with elbow pain and ultrasonographic findings of the capitellum. MATERIALS AND METHODS: A total of 1605 players participating in the regional summer championship in July 2013 underwent a questionnaire survey, physical examination, ultrasound imaging, and radiographic examination...
2016: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/27618245/two-dimensional-video-analysis-of-youth-and-adolescent-pitching-biomechanics-a-tool-for-the-common-athlete
#7
Steven F DeFroda, Charles A Thigpen, Peter K Kriz
Three-dimensional (3D) motion analysis is the gold standard for analyzing the biomechanics of the baseball pitching motion. Historically, 3D analysis has been available primarily to elite athletes, requiring advanced cameras, and sophisticated facilities with expensive software. The advent of newer technology, and increased affordability of video recording devices, and smartphone/tablet-based applications has led to increased access to this technology for youth/amateur athletes and sports medicine professionals...
September 2016: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/27617847/automatic-detection-of-pitching-and-throwing-events-in-baseball-with-inertial-measurement-sensors
#8
Nick B Murray, Georgia M Black, Rod J Whiteley, Peter Gahan, Michael H Cole, Andy Utting, Tim J Gabbett
PURPOSE: Throwing loads are known to be closely related to injury risk, however for logistic reasons, typically only pitchers have their throws counted, and then only during innings. Accordingly, all other throws made are not counted, and therefore estimates of throws made by players may be inaccurately recorded and under-reported. A potential solution to this is the use of wearable microtechnology to automatically detect, quantify, and report pitch counts in baseball. This study investigated the accuracy of baseball pitching and throwing detection in both practice and competition using a commercially available wearable microtechnology unit...
September 6, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27587742/factors-related-to-increased-ulnar-collateral-ligament-thickness-on-stress-sonography-of-the-elbow-in-asymptomatic-youth-and-adolescent-baseball-pitchers
#9
Alfred Atanda, Lauren W Averill, Maegen Wallace, Tim A Niiler, Levon N Nazarian, Michael G Ciccotti
BACKGROUND: Stress ultrasound (SUS) of the elbow has demonstrated changes in the anterior band of the ulnar collateral ligament (UCL) in professional and high school-aged pitchers. However, there have been no large reports correlating pitching history data with SUS changes in youth and adolescent baseball pitchers. HYPOTHESIS: Changes of the UCL on SUS will correlate with pitching volume in youth and adolescent baseball pitchers. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
December 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27561090/comparison-of-neuropsychological-test-scores-of-high-school-athletes-in-high-and-low-contact-sports-a-replication-study
#10
William T Tsushima, Andrea M Siu, Nozomi Yamashita, Ross S Oshiro, Nathan M Murata
This replication study re-examined the neuropsychological effects of participation in high and low contact youth sports. Modeled after a recently published investigation, two contact sport groups of participants ages 12 to 18 were formed based on the rate of concussion in their respective sport, with the assumption that more head impacts and neuropsychological effects occur in high contact sports that have a greater number of reported concussions as compared with low contact sports. The preseason baseline ImPACT neuropsychological test scores and symptom scores of non-concussed youth athletes in a High Contact Sport (football, n = 139) and a Low Contact Sport (basketball, baseball, soccer, wrestling, volleyball, paddling, and cheerleading, n = 57) were compared...
August 25, 2016: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/27441948/glenohumeral-and-hip-range-of-motion-and-strength-measures-in-youth-baseball-athletes
#11
Kelsey J Picha, Josie L Harding, Kellie C Huxel Bliven
CONTEXT: The repetitive demands of throwing affect glenohumeral (GH) range of motion (ROM) and strength. Less is known about hip alterations in skeletally immature athletes. OBJECTIVE: To compare GH and hip ROM and strength between age, position, and side of youth baseball athletes. DESIGN: Cross-sectional study. SETTING: Multicenter testing. PATIENTS OR OTHER PARTICIPANTS: Seventy-two healthy baseball athletes...
June 2, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27359776/retrospective-analysis-of-exposure-to-injury-risk-factors-during-youth-baseball-in-current-collegiate-players-521-board-358-june-1-9-30-am-11-00-am
#12
Michael L Rossetti, Matthew Miltenberger, Jordan Hartey, Shala Davis, Chad Witmer, Emily Sauers
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27334986/elbow-biomechanics-of-pitching-does-age-or-experience-make-a-difference
#13
Shayne Fehr, Derek Damrow, Christopher Kilian, Roger Lyon, Xue-Cheng Liu
BACKGROUND: Elbow pain and elbow injuries are common in youth baseball players. It is not clear whether pitching experience and/or age creates biomechanical differences at the elbow and whether these differences place an athlete at greater risk. HYPOTHESES: (1) Youth pitchers will have differing elbow kinematics with regard to flexion/extension, internal/external rotation, and pronation/supination when compared with nonbaseball athletes and (2) younger youth pitchers will have differing elbow kinematics when compared with older youth pitchers...
September 2016: Sports Health
https://www.readbyqxmd.com/read/27278749/kinematic-comparison-of-baseball-batting-off-of-a-tee-among-various-competition-levels
#14
Brittany Dowling, Glenn S Fleisig
Determining and understanding baseball batting mechanics at various competition levels may help players and coaches identify key kinematics crucial to being a successful hitter. The purpose of this study was to compare batting kinematics across competition levels. Kinematic and temporal data were analysed for 170 male batters (youth n = 33; high school n = 69; college n = 22; professional n = 46) using 3D motion capture (480 Hz). The results showed differences in angular positions between competition levels during the five phases of the swing, with the greatest differences seen between the youth and professional batters...
September 2016: Sports Biomechanics
https://www.readbyqxmd.com/read/27254261/overuse-injuries-of-the-pediatric-and-adolescent-throwing-athlete
#15
Breann K Tisano, A Reed Estes
In the hypercompetitive environment of year round youth baseball, arm pain is commonplace. Although much research has been done about injuries in the overhead throwing athlete, the emphasis has been on the more elite levels, where athletes have reached full development. The anatomy of the skeletally immature athlete, including open physeal plates and increased tissue laxity, raises unique issues in the presentation and treatment of repetitive throwing injuries of the elbow and shoulder. With a focus on "little leaguers," this discussion evaluates five of the most common elbow and shoulder injuries-Little Leaguer's elbow, ulnar collateral ligament sprain or tear, osteochondritis dissecans/Panner's disease, Little Leaguer's shoulder, and multidirectional instability...
October 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27160462/anterior-cruciate-ligament-injuries-in-baseball-players
#16
Jeffrey R Dugas, Benjamin B Bedford, John S Andrachuk, Anthony J Scillia, Kyle T Aune, E Lyle Cain, James R Andrews, Glenn S Fleisig
PURPOSE: To determine common mechanisms of anterior cruciate ligament (ACL) injury in baseball players and to quantify the rate of return to play after primary surgical reconstruction and review intermediate clinical outcomes. METHODS: Surgical injuries involving the ACL in youth, high school, collegiate, and professional baseball players were queried for an 11-year period (2001 to 2011). Over the study period, 42 baseball players were identified who had undergone arthroscopically assisted primary ACL reconstruction by 1 of 3 attending surgeons...
May 5, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27147689/preseason-assessment-of-radiographic-abnormalities-in-elbows-of-little-league-baseball-players
#17
Andrew T Pennock, Andrew Pytiak, Phillip Stearns, Joanna H Roocroft, Jerry Dwek, Peter Kruk, Tracey P Bastrom
BACKGROUND: Youth baseball has been associated with elbow pain and elbow abnormalities, leading to the implementation of throwing and pitching guidelines. The purpose of the current study was to examine elbow abnormalities on magnetic resonance imaging (MRI) in asymptomatic Little League baseball players and to correlate these findings with the players' throwing history and physical examinations. METHODS: A prospective study of Little League players who were 10 to 13 years of age was performed...
May 4, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27118556/compliance-with-injury-prevention-measures-in-youth-pitchers-survey-of-coaches-in-little-league-of-puerto-rico
#18
Kristian J Pamias-Velázquez, Mariam M Figueroa-Negrón, Janiliz Tirado-Crespo, Ana L Mulero-Portela
BACKGROUND: Because of the problem of elbow and shoulder injuries in baseball pitchers between 9 and 14 years of age, the USA Baseball Medical & Safety Advisory Committee and the Department of Recreation and Sports in Puerto Rico developed injury prevention guidelines for pitchers. The purpose of this study was to determine the compliance of pitching coaches of 9- to 14-year-old Little League teams in Puerto Rico with the Administrative Order 2006-01 and the USA Baseball guidelines. HYPOTHESES: (1) The coaches will have a satisfactory level of compliance with the Administrative Order as well as with the USA Baseball guidelines and (2) both the level of education of the coach as well as the years of experience will correlate with the level of compliance...
May 2016: Sports Health
https://www.readbyqxmd.com/read/27110899/differences-among-fastball-curveball-and-change-up-pitching-biomechanics-across-various-levels-of-baseball
#19
Glenn S Fleisig, Walter A Laughlin, Kyle T Aune, E Lyle Cain, Jeffrey R Dugas, James R Andrews
Controversy continues whether curveballs are stressful for young baseball pitchers. Furthermore, it is unproven whether professional baseball pitchers have fewer kinematic differences between fastballs and off-speed pitches than lower level pitchers. Kinematic and kinetic data were measured for 111 healthy baseball pitchers (26 youth, 21 high school, 20 collegiate, 26 minor league, and 18 major league level) throwing fastballs, curveballs, and change-ups in an indoor biomechanics laboratory with a high-speed, automated digitising system...
June 2016: Sports Biomechanics
https://www.readbyqxmd.com/read/26991568/predicting-and-preventing-injury-in-major-league-baseball
#20
REVIEW
Brandon J Erickson, Peter N Chalmers, Charles A Bush-Joseph, Anthony A Romeo
Major League Baseball (MLB) players are at significant risk for both chronic, repetitive overuse injuries as well as acute traumatic injuries. Pitchers have been shown to be at higher risk for sustaining injuries, especially upper extremity injuries, than position players. The past several MLB seasons have seen a dramatic rise in the number of ulnar collateral ligament reconstructions performed in MLB pitchers. Several recent prospective studies have identified risk factors for injuries to both the shoulder and elbow in MLB pitchers...
March 2016: American Journal of Orthopedics
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