Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers

# Background The OnBaseU screen was developed to evaluate a baseball pitcher’s ability to perform movement patterns key to pitching. However, due to lack of validation, it is unclear what application is ideal for this screen. # Purpose To compare four OnBaseU tests to relevant pitching mechanics...

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Autores principales:	Tessa Hulburt, Taylor Catalano, Kristen F. Nicholson
Formato:	article
Lenguaje:	EN
Publicado:	North American Sports Medicine Institute 2021
Materias:	Sports medicine RC1200-1245
Acceso en línea:	https://doaj.org/article/5e2e0704142c4c7990553eb0f4412707
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spelling	oai:doaj.org-article:5e2e0704142c4c7990553eb0f44127072021-12-02T00:38:45ZComparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers2159-2896https://doaj.org/article/5e2e0704142c4c7990553eb0f44127072021-12-01T00:00:00Zhttps://ijspt.scholasticahq.com/article/29519-comparison-of-onbaseu-tests-with-biomechanical-motion-analysis-in-youth-baseball-pitchers.pdfhttps://doaj.org/toc/2159-2896# Background The OnBaseU screen was developed to evaluate a baseball pitcher’s ability to perform movement patterns key to pitching. However, due to lack of validation, it is unclear what application is ideal for this screen. # Purpose To compare four OnBaseU tests to relevant pitching mechanics measured using 3D motion capture to evaluate if the OnBaseU screen can be used to assess pitching mechanics. The secondary purpose was to compare OnBaseU and 3D motion capture seated trunk rotation test results to determine the validity of the OnBaseU test. # Methods OnBaseU screening and 3D motion capture pitching evaluations were completed for 103 adolescent pitchers (age = 15.2 ± 1.29 years; height = 1.80 ± 0.0866 m; weight = 76.2 ± 13.8 kg). A motion capture seated trunk rotation test was also conducted on 80 of the 103 youth players (age = 15.2 ± 1.32 years; height = 1.80 ± 0.0889 m; weight = 75.7 ± 13.9 kg). # Results Stride length and OnBaseU side step walkout test data were moderately correlated, and all other comparisons were not correlated or were minorly correlated. No significant differences were found between kinematics from players who obtained different OnBaseU scores, except for stride lengths during pitching of players who scored a 1 or 3 on the OnBaseU side step walkout test (p<0.01). Further, OnBaseU and motion capture seated trunk rotation tests were not correlated (r = 0.003) and not found to be statistically associated (p = 0.83). # Conclusion Results from this study indicate that the OnBaseU clinical assessment screen may not have use in assessing pitching mechanics and that visual grading criteria used in the OnBaseU seated trunk rotation test may not be accurate. # Level of Evidence 3Tessa HulburtTaylor CatalanoKristen F. NicholsonNorth American Sports Medicine InstitutearticleSports medicineRC1200-1245ENInternational Journal of Sports Physical Therapy, Vol 16, Iss 6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Sports medicine RC1200-1245
spellingShingle	Sports medicine RC1200-1245 Tessa Hulburt Taylor Catalano Kristen F. Nicholson Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers
description	# Background The OnBaseU screen was developed to evaluate a baseball pitcher’s ability to perform movement patterns key to pitching. However, due to lack of validation, it is unclear what application is ideal for this screen. # Purpose To compare four OnBaseU tests to relevant pitching mechanics measured using 3D motion capture to evaluate if the OnBaseU screen can be used to assess pitching mechanics. The secondary purpose was to compare OnBaseU and 3D motion capture seated trunk rotation test results to determine the validity of the OnBaseU test. # Methods OnBaseU screening and 3D motion capture pitching evaluations were completed for 103 adolescent pitchers (age = 15.2 ± 1.29 years; height = 1.80 ± 0.0866 m; weight = 76.2 ± 13.8 kg). A motion capture seated trunk rotation test was also conducted on 80 of the 103 youth players (age = 15.2 ± 1.32 years; height = 1.80 ± 0.0889 m; weight = 75.7 ± 13.9 kg). # Results Stride length and OnBaseU side step walkout test data were moderately correlated, and all other comparisons were not correlated or were minorly correlated. No significant differences were found between kinematics from players who obtained different OnBaseU scores, except for stride lengths during pitching of players who scored a 1 or 3 on the OnBaseU side step walkout test (p<0.01). Further, OnBaseU and motion capture seated trunk rotation tests were not correlated (r = 0.003) and not found to be statistically associated (p = 0.83). # Conclusion Results from this study indicate that the OnBaseU clinical assessment screen may not have use in assessing pitching mechanics and that visual grading criteria used in the OnBaseU seated trunk rotation test may not be accurate. # Level of Evidence 3
format	article
author	Tessa Hulburt Taylor Catalano Kristen F. Nicholson
author_facet	Tessa Hulburt Taylor Catalano Kristen F. Nicholson
author_sort	Tessa Hulburt
title	Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers
title_short	Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers
title_full	Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers
title_fullStr	Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers
title_full_unstemmed	Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers
title_sort	comparison of onbaseu tests with biomechanical motion analysis in youth baseball pitchers
publisher	North American Sports Medicine Institute
publishDate	2021
url	https://doaj.org/article/5e2e0704142c4c7990553eb0f4412707
work_keys_str_mv	AT tessahulburt comparisonofonbaseutestswithbiomechanicalmotionanalysisinyouthbaseballpitchers AT taylorcatalano comparisonofonbaseutestswithbiomechanicalmotionanalysisinyouthbaseballpitchers AT kristenfnicholson comparisonofonbaseutestswithbiomechanicalmotionanalysisinyouthbaseballpitchers
_version_	1718403557976178688

Comparison of OnBaseU Tests with Biomechanical Motion Analysis in Youth Baseball Pitchers

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