2024
Kinematic Modeling of Pitch Velocity in High School and Professional Baseball Pitchers: Comparisons With the Literature
Manzi J, Dowling B, Wang Z, Sudah S, Moran J, Chen F, Estrada J, Nicholson A, Ciccotti M, Ruzbarsky J, Dines J. Kinematic Modeling of Pitch Velocity in High School and Professional Baseball Pitchers: Comparisons With the Literature. Orthopaedic Journal Of Sports Medicine 2024, 12: 23259671241262730. PMID: 39143985, PMCID: PMC11322935, DOI: 10.1177/23259671241262730.Peer-Reviewed Original ResearchMaximal shoulder external rotationShoulder external rotationProfessional pitchersPitch velocityBaseball pitchersPlaying levelTrunk flexionBall releaseStride lengthExternal rotationElbow extension velocityCollegiate baseball pitchersLeg lengthProfessional baseball pitchersCollegiate pitchersBall velocityExtension velocityKinematic variablesProfessional groupsHigh schoolSystematic reviewMotion capturePitchersMultiregression modelKinematic parametersIncreasing Pitch Count is Associated with Increasing Elbow Flexion Angle at Ball Release in Youth Baseball Pitchers
Cecere R, Fury M, Lipkens N, Williams A, Matzko N, White H, Lama J, Moran J, Fealy S, Dines J, Gulotta L, Kontaxis A. Increasing Pitch Count is Associated with Increasing Elbow Flexion Angle at Ball Release in Youth Baseball Pitchers. Journal Of Shoulder And Elbow Surgery 2024 PMID: 39074530, DOI: 10.1016/j.jse.2024.05.050.Peer-Reviewed Original ResearchElbow flexion angleYouth baseball pitchersBall releaseElbow flexionFlexion angleElbow injuriesIncreasing pitch countPitch countsBaseball pitchersBall velocityBall speedThree-dimensional marker trajectoriesMaximal isometric strengthYouth baseball playersInternal rotation velocityOptical motion capture systemMotion capture systemRetro-reflective markersIsometric strengthMale pitchersOveruse injuriesRadar gunMarker trajectoriesShoulder abductionAssociated with increased rates
2023
Forearm Pronation at Foot Contact: A Biomechanical Motion-Capture Analysis in High School and Professional Pitchers
Manzi J, Dowling B, Wang Z, Sudah S, Quan T, Moran J, McElheny K, Carr J, Gulotta L, Dines J. Forearm Pronation at Foot Contact: A Biomechanical Motion-Capture Analysis in High School and Professional Pitchers. Orthopaedic Journal Of Sports Medicine 2023, 11: 23259671221145233. PMID: 37123995, PMCID: PMC10134138, DOI: 10.1177/23259671221145233.Peer-Reviewed Original ResearchForearm pronationForearm supinationProfessional pitchersFoot contactHigh school pitchersUlnar collateral ligament injuriesCollateral ligament injuriesVarus torqueSignificant risk factorsMedial forceWeak positive associationDescriptive laboratory studySubsequent surgeryLigament injuryPronation/supinationRisk factorsElbow flexionExternal rotationForearm pronation/supinationPronationSupinationBaseball pitchersStrong associationMotion capture analysisGroup level
2022
Relationships between throwing mechanics and shoulder anterior force in high school and professional baseball pitchers
Manzi J, Nicholson A, Dowling B, Black G, Krichevsky S, Quan T, Moran J, Kunze K, Dines J. Relationships between throwing mechanics and shoulder anterior force in high school and professional baseball pitchers. Shoulder & Elbow 2022, 16: 17-23. PMID: 38425734, PMCID: PMC10901177, DOI: 10.1177/17585732221098721.Peer-Reviewed Original ResearchHigh school pitchersAnterior forceShoulder external rotationProfessional baseball pitchersExternal rotationProfessional pitchersFoot contactHorizontal adductionBaseball pitchersBall releaseMaximum shoulder external rotationAnterior laxityRotator cuffShoulder abductionClinical relevanceJoint impingementTrunk flexion