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https://www.readbyqxmd.com/read/29026798/influence-of-youth-baseball-players-pitches-on-range-of-motion-and-ball-speed
#1
Seung-Won Yang, Se-Jeong Kwon, Joon-Sung Park, Tae-Young Kim, Nam-Il An, Young-Sub Lee
No abstract text is available yet for this article.
September 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28975134/early-sport-specialization-effectiveness-and-risk-of-injury-in-professional-baseball-players
#2
Andrew Wilhelm, Changryol Choi, John Deitch
BACKGROUND: The rate of early sport specialization in professional baseball players is unknown. PURPOSE: To report the incidence and age of sport specialization in current professional baseball players and the impact of early specialization on the frequency of serious injuries sustained during the players' careers. We also queried participants about when serious injuries occurred, the players' current position on the field, and their opinions regarding the need for young athletes to specialize early to play at the professional level...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28968146/changes-in-youth-baseball-pitching-biomechanics-a-7-year-longitudinal-study
#3
Glenn S Fleisig, Alek Z Diffendaffer, Brett Ivey, Kyle T Aune, Tony Laughlin, Dave Fortenbaugh, Becky Bolt, Wendy Lucas, Kevin D Moore, Jeffrey R Dugas
BACKGROUND: Pitching biomechanics are associated with performance and risk of injury in baseball. Previous studies have identified biomechanical differences between youth and adult pitchers but have not investigated changes within individual young pitchers as they mature. HYPOTHESIS: Pitching kinematics and kinetics will change significantly during a youth pitcher's career. STUDY DESIGN: Descriptive laboratory study. METHODS: Pitching biomechanics were captured in an indoor laboratory with a 12-camera, 240-Hz motion analysis system for 51 youth pitchers who were in their first season of organized baseball with pitching...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28742607/pitch-counts-in-youth-baseball-and-softball-a-historical-review
#4
Brian T Feeley, Jessica Schisel, Julie Agel
OBJECTIVE: Pitching injuries are getting increased attention in the mass media. Many references are made to pitch counts and the role they play in injury prevention. The original purpose of regulating the pitch count in youth baseball was to reduce injury and fatigue to pitchers. This article reviews the history and development of the pitch count limit in baseball, the effect it has had on injury, and the evidence regarding injury rates on softball windmill pitching. DATA SOURCE: Literature search through PubMed, mass media, and organizational Web sites through June 2015...
July 21, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28739314/concussion-rates-in-u-s-middle-school-athletes-2015-2016-school-year
#5
Zachary Y Kerr, Nelson Cortes, Amanda M Caswell, Jatin P Ambegaonkar, Kaitlin Romm Hallsmith, A Frederick Milbert, Shane V Caswell
INTRODUCTION: Concussion incidence estimates in middle school sports settings are limited. This study examines concussion incidence in nine U.S. middle schools during the 2015-2016 school year. METHODS: Concussion data originated from nine public middle schools in Prince William County, Virginia, during the 2015-2016 school year. Certified athletic trainers collected concussion and athlete exposure (AE) data in school-sanctioned games and practices in boys' baseball, basketball, football, soccer, track, and wrestling; and girls' basketball, cheerleading, soccer, softball, track, and volleyball...
July 21, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28680897/high-prevalence-of-nontraumatic-shoulder-pain-in-a-regional-sample-of-female-high-school-volleyball-athletes
#6
Kayt E Frisch, Jacob Clark, Chad Hanson, Chris Fagerness, Adam Conway, Lindsay Hoogendoorn
BACKGROUND: Shoulder pain is becoming increasingly problematic in young players as volleyball gains popularity. Associations between repetitive motion and pain and overuse injury have been observed in other overhand sports (most notably baseball). Studies of adult athletes suggest that there is a shoulder pain and overuse problem present in volleyball players, but minimal research has been done to establish rates and causes in juvenile participants. PURPOSE: To establish rates of shoulder pain, regardless of whether it resulted in a loss of playing time, in female high school volleyball players...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28567429/are-the-current-little-league-pitching-guidelines-adequate-a-single-season-prospective-mri-study
#7
Andrew V Pytiak, Phillip Stearns, Tracey P Bastrom, Jerry Dwek, Peter Kruk, Joanna H Roocroft, Andrew T Pennock
BACKGROUND: Little League throwing guidelines have recently been implemented in an attempt to lessen the growing number of elbow injuries occurring in youth baseball players. HYPOTHESIS/PURPOSE: The purpose of this study was to examine pre- and postseason changes seen on magnetic resonance imaging (MRI) in youth baseball players' elbows in an attempt to identify risk factors for pain and MRI abnormalities, with a particular focus on the current Little League guidelines...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28530502/the-effect-of-stride-length-and-lateral-pelvic-tilt-on-elbow-torque-in-youth-baseball-pitchers
#8
Noah X Tocci, David R Howell, Dai Sugimoto, Corey Dawkins, Amy Whited, Donald Bae
High elbow torque during a pitch may contribute to injury risk. Our objective was to determine the pitch mechanics associated with elbow varus torque in youth baseball pitchers. Eighteen male youth pitchers (age = 15.5 ± 1.6 years) threw 3 fastballs and 3 change-ups from a windup position while undergoing 3-dimensional kinematic analysis. Independent variables included ball release point distance, stride length, lateral pelvic tilt, and ball velocity. Two multiple regression models, separated by pitch type (fastball, change-up) were used to determine the association of independent variables with peak varus torque at the elbow...
October 1, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28478963/shoulder-and-elbow-pain-in-elementary-school-baseball-players-the%C3%A2-results-from-a-nation-wide-survey-in-japan
#9
Kenji Takagishi, Tetsuya Matsuura, Takashi Masatomi, Etsuo Chosa, Tsuyoshi Tajika, Mikihiko Watanabe, Tetsu Iwama, Toshiro Otani, Katsunori Inagaki, Hiroyasu Ikegami, Mitsuhiro Aoki, Ko Kato, Toru Okuwaki, Koichi Sairyo, Yasushi Kameyama, Akira Maeda, Moroe Beppu
BACKGROUND: Despite recommendations on how to prevent baseball injuries in youths by the Japanese Society of Clinical Sports Medicine, shoulder and elbow pain still frequently occurs in young baseball players. We conducted a questionnaire survey among baseball players at elementary schools across the country to understand the practice conditions of players, examining the risk factors of shoulder and elbow pain in baseball players. METHODS: The questionnaire survey was conducted among elementary school baseball players as members of the Baseball Federation of Japan in September 2015...
May 3, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28451602/exceeding-pitch-count-recommendations-in-little-league-baseball-increases-the-chance-of-requiring-tommy-john-surgery-as-a-professional-baseball-pitcher
#10
Brandon J Erickson, Peter N Chalmers, Michael J Axe, Anthony A Romeo
BACKGROUND: Empirical evidence has suggested a connection between youth pitch counts and subsequent elbow injury. For players within the Little League World Series (LLWS), detailed historical player data are available. Some of these players progress to both professional play and require an ulnar collateral ligament reconstruction (UCLR). PURPOSE: To determine the percentage of LLWS pitchers who proceed to play professional (major or minor league) baseball, the rate of UCLR in former LLWS pitchers who played professional baseball, and the risk to those who exceeded current pitch count recommendations while playing in the LLWS...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28328567/effects-of-a-simulated-game-on-upper-extremity-pitching-mechanics-and-muscle-activations-among-various-pitch-types-in-youth-baseball-pitchers
#11
Gretchen D Oliver, Hillary Plummer, Lisa Henning, Michael Saper, Gabrielle Glimer, Allison Brambeck, James R Andrews
BACKGROUND: Throwing requires proper stability and orientation of the pelvis and scapula for efficient energy transfer during pitching. Fatigue of the pelvis and scapular musculature throughout the course of a game can impair pitching performance, and place excessive demands on the throwing arm leading to injury. The purpose of this study was to examine differences in pelvis, torso, and upper extremity pitching mechanics and muscle activations between the fastball, change-up, and curveball pitches in youth baseball pitchers following a simulated game...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28277893/risk-factors-for-shoulder-and-elbow-pain-in-youth-baseball-players
#12
Tetsuya Matsuura, Toshiyuki Iwame, Naoto Suzue, Kokichi Arisawa, Koichi Sairyo
OBJECTIVES: This study sought to quantify the 1-year cumulative incidence of shoulder and elbow pain among youth baseball players and identify risk factors associated with the occurrence of shoulder and elbow pain. METHODS: In total, 900 youth baseball players (aged 7-11 years) were enrolled in a 1-year prospective follow-up study. One year later, the players were asked whether they had experienced episodes of shoulder or elbow pain and the following risk factors for such pain were investigated: age, position, length of baseball experience, training hours per week, and history of shoulder or elbow pain...
May 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28146405/the-youth-throwing-score-validating-injury-assessment-in-young-baseball-players
#13
Christopher S Ahmad, Ajay S Padaki, Manish S Noticewala, Eric C Makhni, Charles A Popkin
BACKGROUND: Epidemic levels of shoulder and elbow injuries have been reported recently in youth and adolescent baseball players. Despite the concerning frequency of these injuries, no instrument has been validated to assess upper extremity injury in this patient population. Purpose/Hypothesis: The purpose of this study was to validate an upper extremity assessment tool specifically designed for young baseball players. We hypothesized that this tool will be both reliable and valid. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28079648/acute-response-of-the-infraspinatus-and-biceps-tendons-to-pitching-in-youth-baseball
#14
Adam Popchak, Nathan Hogaboom, Dharmesh Vyas, John Abt, Anthony Delitto, James J Irrgang, Michael Boninger
PURPOSE: Youth baseball frequently results in repetitive strain injuries. Quantitative ultrasound allows real-time imaging with the ability to identify acute markers of tendon change. The study objective was to determine acute quantitative ultrasound changes in the long head of the biceps and infraspinatus tendons of the throwing and non-throwing shoulders during a pitching performance. We hypothesized the tendons of the pitching arm would exhibit an increased width and decreased echogenicity after pitching and that tendons of the non-pitching arm would not demonstrate such changes...
January 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27864504/youth-baseball-pitching-stride-length-normal-values-and-correlation-with-field-testing
#15
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...
May 2017: Sports Health
https://www.readbyqxmd.com/read/27852593/humeral-retrotorsion-and-glenohumeral-motion-in-youth-baseball-players-compared-with-age-matched-nonthrowing-athletes
#16
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...
February 2017: 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
#17
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
#18
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
#19
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
#20
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
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