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Generalizability of Center of Pressu...

University of Illinois at Urbana-Champaign.

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Generalizability of Center of Pressure measurements across age populations.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Generalizability of Center of Pressure measurements across age populations./
作者:	Doyle, Richard John.
面頁冊數:	146 p.
附註:	Advisers: Karl Rosengren; Elizabeth Hsiao-Wecksler.
Contained By:	Dissertation Abstracts International69-05B.
標題:	Health Sciences, General. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3314960
ISBN:	9780549650294

Generalizability of Center of Pressure measurements across age populations.
Doyle, Richard John.

Generalizability of Center of Pressure measurements across age populations. - 146 p.

Advisers: Karl Rosengren; Elizabeth Hsiao-Wecksler.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.

The reliability of common Center of Pressure (COP) measurements was systematically investigated. Studies on the control of posture during quiet standing using force platform data lack standardization in measurement protocols (especially trial length and number). Guidelines for methodology that met acceptable reliability levels were established in both normal and altered visual conditions (Studies 1 and 2) and across multiple age populations (Study 3). The tools of Generalizability Theory (G-Theory) were used to thoroughly examine the reliability of both summary and time-varying measurements of COP. G-Theory is a powerful reliability analysis tool that permits the systematic inspection of identified components of variance (i.e. length of trial and number of trials) and subsequently provides feedback on establishing protocols meeting acceptable levels of reliability. The results of all three studies indicate that, when investigating quiet standing using COP measurements from a force platform, a minimum of 5 trials should be completed at 60 seconds in length. Most measurements included in these studies reached acceptable levels of reliability at or before this point. Reliability is a critical component of research design and the guidelines established in these studies can be used when designing future studies.

ISBN: 9780549650294Subjects--Topical Terms:

1017817
Health Sciences, General.

Generalizability of Center of Pressure measurements across age populations.
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500 $a Source: Dissertation Abstracts International, Volume: 69-05, Section: B, page: 2883.
502 $a Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.
520 $a The reliability of common Center of Pressure (COP) measurements was systematically investigated. Studies on the control of posture during quiet standing using force platform data lack standardization in measurement protocols (especially trial length and number). Guidelines for methodology that met acceptable reliability levels were established in both normal and altered visual conditions (Studies 1 and 2) and across multiple age populations (Study 3). The tools of Generalizability Theory (G-Theory) were used to thoroughly examine the reliability of both summary and time-varying measurements of COP. G-Theory is a powerful reliability analysis tool that permits the systematic inspection of identified components of variance (i.e. length of trial and number of trials) and subsequently provides feedback on establishing protocols meeting acceptable levels of reliability. The results of all three studies indicate that, when investigating quiet standing using COP measurements from a force platform, a minimum of 5 trials should be completed at 60 seconds in length. Most measurements included in these studies reached acceptable levels of reliability at or before this point. Reliability is a critical component of research design and the guidelines established in these studies can be used when designing future studies.
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