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Neuromotor control variables and the...

Dragoo, Brent A.

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Neuromotor control variables and their impact on select biomechanical parameters of the baseball swing.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Neuromotor control variables and their impact on select biomechanical parameters of the baseball swing./
作者:	Dragoo, Brent A.
面頁冊數:	116 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5481.
Contained By:	Dissertation Abstracts International64-11B.
標題:	Health Sciences, Recreation. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3114317
ISBN:	0496618105

Neuromotor control variables and their impact on select biomechanical parameters of the baseball swing.
Dragoo, Brent A.

Neuromotor control variables and their impact on select biomechanical parameters of the baseball swing. - 116 p.

Source: Dissertation Abstracts International, Volume: 64-11, Section: B, page: 5481.

Thesis (Ph.D.)--Texas Woman's University, 2003.

The problem of the study was to identify variables, which might contribute to the overall performance of hitting a baseball. Secondarily, this study sought to identify those variables within different skill levels and document each variables contribution to an effective swing. Thirty-two participants swung a standardized aluminum bat in a batting cage. Each participant performed 10 reaction time (RXN) trials, which were averaged to determine RXN time. Five high-speed digital cameras filmed participants to collect kinematic data. Participants performed trials while standing atop a two forceplate setup for the collection of kinetic data. Only the best hit was utilized for this investigation. Kinematic data were analyzed for angular velocity, linear bat velocity and ball exit velocity. Kinetic data were analyzed for center of pressure data, which upon further investigation yielded spike of accelerations (SOA) (based on velocity of Center of Pressure (COP)) and location of last spike (LOLS) relative to ball contact. It was identified that there are significant differences between little league and college groups with regard to ball flight time (BFT), bat response time (BRT), COP X, COP Y, ball exit velocity (BEV), linear bat velocity (LBTV), shoulder angular velocity (SHAV), hip angular velocity (HAV), height (HT), weight (WT), experience level (EL), and AGE. Post-hoc testing identified there were no significant differences between the high school and college. Across all three skill levels, with regards to EL significant differences were identified between COP X, COP Y, BRT, and BFT. LOLS was significantly related to BEV F (16, 15, 31) = 2.708, p = .030. Within the college group it was identified that there was an extended period of BRT despite swinging at the fastest pitches. In the high school group it was identified that athletes with a higher BRT also had the highest BEV. Within only the little league group, SOA were found to be positively correlated with movement of COP in the X direction. This finding further identifies the inexperienced skill level with regards to wasted movement during the swing. Kinetic data identified that COPY increased as skill levels improved.

ISBN: 0496618105Subjects--Topical Terms:

1018003
Health Sciences, Recreation.

Neuromotor control variables and their impact on select biomechanical parameters of the baseball swing.
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