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The Reliability and Validity of Meas...

Bradford, Luke.

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The Reliability and Validity of Measuring Devices for Measuring Mechanical Power.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Reliability and Validity of Measuring Devices for Measuring Mechanical Power./
Author:	Bradford, Luke.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	38 p.
Notes:	Source: Masters Abstracts International, Volume: 56-05.
Contained By:	Masters Abstracts International56-05(E).
Subject:	Kinesiology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10616907
ISBN:	9780355272970

The Reliability and Validity of Measuring Devices for Measuring Mechanical Power.
Bradford, Luke.

The Reliability and Validity of Measuring Devices for Measuring Mechanical Power. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 38 p.

Source: Masters Abstracts International, Volume: 56-05.

Thesis (M.S.Ed.)--University of Kansas, 2017.

The Reliability and Validity of Measuring Devices for Measuring Mechanical Power The primary purpose of this paper is to validate a 3-D motion capture system as a reliable and valid measurement tool to be used in the practical setting for measuring bar velocity and mechanical power output. One resistance-trained, male college student participated in this study, performing ten sets of one repetition at loads of 30, 40, 50, 60, 70, and 80% of his 1 repetition maximum (1 RM) for the barbell back squat exercise. Each repetition was simultaneously recorded with a 3-D camera (EliteForm PowerTracker; EliteForm, Lincoln, Nebraska), a tether based position transducer (gold standard), and a tether-based external dynamometer. Power values were derived using the bar velocity and the system mass (external load + 88% of body mass). Both Mean and Peak Velocity and Mean and Peak Power values were used to compare the measurement devices. In addition to linear regression, and correlation data, Bland-Altman plots (Tukey mean difference analyses) were created to measure agreement in the relative difference of values from each system. There were significant correlations (r > .80) between all 3 methods, but were highest in mean velocity and peak velocity. Mean velocity and mean power are shown to be within the limits of agreement when comparing the 3-D camera system and LPT, while peak velocity and peak power are outside of the limits of agreement. However, a comparison of 3-D camera system and external dynamometer, shows that all 4 variables were within 95% limits of agreement. Overall, the technology in question offers a reliable means of assessing velocity and power measurements in the practical setting.

ISBN: 9780355272970Subjects--Topical Terms:

517627
Kinesiology.

The Reliability and Validity of Measuring Devices for Measuring Mechanical Power.
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245 1 4 $a The Reliability and Validity of Measuring Devices for Measuring Mechanical Power.
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300 $a 38 p.
500 $a Source: Masters Abstracts International, Volume: 56-05.
500 $a Adviser: Andrew C. Fry.
502 $a Thesis (M.S.Ed.)--University of Kansas, 2017.
520 $a The Reliability and Validity of Measuring Devices for Measuring Mechanical Power The primary purpose of this paper is to validate a 3-D motion capture system as a reliable and valid measurement tool to be used in the practical setting for measuring bar velocity and mechanical power output. One resistance-trained, male college student participated in this study, performing ten sets of one repetition at loads of 30, 40, 50, 60, 70, and 80% of his 1 repetition maximum (1 RM) for the barbell back squat exercise. Each repetition was simultaneously recorded with a 3-D camera (EliteForm PowerTracker; EliteForm, Lincoln, Nebraska), a tether based position transducer (gold standard), and a tether-based external dynamometer. Power values were derived using the bar velocity and the system mass (external load + 88% of body mass). Both Mean and Peak Velocity and Mean and Peak Power values were used to compare the measurement devices. In addition to linear regression, and correlation data, Bland-Altman plots (Tukey mean difference analyses) were created to measure agreement in the relative difference of values from each system. There were significant correlations (r > .80) between all 3 methods, but were highest in mean velocity and peak velocity. Mean velocity and mean power are shown to be within the limits of agreement when comparing the 3-D camera system and LPT, while peak velocity and peak power are outside of the limits of agreement. However, a comparison of 3-D camera system and external dynamometer, shows that all 4 variables were within 95% limits of agreement. Overall, the technology in question offers a reliable means of assessing velocity and power measurements in the practical setting.
590 $a School code: 0099.
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