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The Effect of Real-Time Feedback on ...

Oliver, Andrew P.

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The Effect of Real-Time Feedback on Baseball Pitching Mechanics Measured Using Inertial Measurement Units.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Effect of Real-Time Feedback on Baseball Pitching Mechanics Measured Using Inertial Measurement Units./
Author:	Oliver, Andrew P.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	91 p.
Notes:	Source: Masters Abstracts International, Volume: 81-12.
Contained By:	Masters Abstracts International81-12.
Subject:	Biomedical engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27993661
ISBN:	9798641391137

The Effect of Real-Time Feedback on Baseball Pitching Mechanics Measured Using Inertial Measurement Units.
Oliver, Andrew P.

The Effect of Real-Time Feedback on Baseball Pitching Mechanics Measured Using Inertial Measurement Units. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 91 p.

Source: Masters Abstracts International, Volume: 81-12.

Thesis (M.S.)--Saint Louis University, 2020.

This item must not be sold to any third party vendors.

The purpose of this study was to assess the ability of inertial measurement units (IMUs) to detect changes in mechanical variables that are associated with overuse injuries in youth baseball pitchers. In addition, this study assessed whether pitchers could respond to real-time feedback in a manner that is detectable in their pitching mechanics using IMUs. Camera-based motion capture is the traditional method used to capture baseball pitching mechanics data, however, IMUs represent a new technology that could lead to a revolution in how pitching mechanics data are collected. These small electronic sensors are extremely portable and can be used to capture motion data during games or practices. IMU and force plate data were collected on 11 baseball pitchers aged 18-25 years old. The pelvis and trunk angular velocity, stride length, stride leg ground reaction forces, and drive leg ground reaction forces were correlated to pitch velocity and to other mechanical and performance variables. Real-time feedback was given to participants to test its effect on these variables. Subjects were able to alter their stride length and pelvis angular velocity in response to verbal cues, and those alterations significantly affected pitch performance. Drive leg ground reaction forces in the direction of the plate and in the vertical direction were highly correlated to pitch velocity (r=0.534, r=0.731). Ground reaction force (GRF) data further confirmed the importance of the lower body in generating pitch velocity, while drive leg impulse was utilized to develop a more complete picture of how velocity is generated. Variables that are easily tracked by IMUs, such as peak trunk and pelvis angular velocity, appear to be some of the most promising variables to monitor and adjust in real-time in order to improve the lower body motion that optimizes pitching performance.

ISBN: 9798641391137Subjects--Topical Terms:

535387
Biomedical engineering.
Subjects--Index Terms:

Biomechanics

The Effect of Real-Time Feedback on Baseball Pitching Mechanics Measured Using Inertial Measurement Units.
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520 $a The purpose of this study was to assess the ability of inertial measurement units (IMUs) to detect changes in mechanical variables that are associated with overuse injuries in youth baseball pitchers. In addition, this study assessed whether pitchers could respond to real-time feedback in a manner that is detectable in their pitching mechanics using IMUs. Camera-based motion capture is the traditional method used to capture baseball pitching mechanics data, however, IMUs represent a new technology that could lead to a revolution in how pitching mechanics data are collected. These small electronic sensors are extremely portable and can be used to capture motion data during games or practices. IMU and force plate data were collected on 11 baseball pitchers aged 18-25 years old. The pelvis and trunk angular velocity, stride length, stride leg ground reaction forces, and drive leg ground reaction forces were correlated to pitch velocity and to other mechanical and performance variables. Real-time feedback was given to participants to test its effect on these variables. Subjects were able to alter their stride length and pelvis angular velocity in response to verbal cues, and those alterations significantly affected pitch performance. Drive leg ground reaction forces in the direction of the plate and in the vertical direction were highly correlated to pitch velocity (r=0.534, r=0.731). Ground reaction force (GRF) data further confirmed the importance of the lower body in generating pitch velocity, while drive leg impulse was utilized to develop a more complete picture of how velocity is generated. Variables that are easily tracked by IMUs, such as peak trunk and pelvis angular velocity, appear to be some of the most promising variables to monitor and adjust in real-time in order to improve the lower body motion that optimizes pitching performance.
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