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Monitors-Based Measurement of Sedent...

Florez Pregonero, Argemiro Alberto.

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Monitors-Based Measurement of Sedentary Behaviors and Light Physical Activity in Adults.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Monitors-Based Measurement of Sedentary Behaviors and Light Physical Activity in Adults./
作者:	Florez Pregonero, Argemiro Alberto.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	224 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Contained By:	Dissertation Abstracts International78-09B(E).
標題:	Health sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10264053
ISBN:	9781369730999

Monitors-Based Measurement of Sedentary Behaviors and Light Physical Activity in Adults.
Florez Pregonero, Argemiro Alberto.

Monitors-Based Measurement of Sedentary Behaviors and Light Physical Activity in Adults. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 224 p.

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)--Arizona State University, 2017.

Having accurate measurements of sedentary behaviors is important to understand relationships between sedentary behaviors and health outcomes and to evaluate changes in interventions and health promotion programs designed to reduce sedentary behaviors. This dissertation included three projects that examined measurement properties of wearable monitors used to measure sedentary behaviors. Project one examined the validity of three monitors: the ActiGraph GT3X+, activPAL(TM), and SenseWear 2. None of the monitors were equivalent with the criterion measure of oxygen uptake to estimate the energy cost of sedentary and light-intensity activities. The ActivPAL(TM) had the best accuracy as compared with the other monitors. In project two, the accuracy of ActiGraph GT3X+and GENEActiv cut-points used to assess sedentary behavior were compared with direct observation during free-living conditions. New vector magnitude cut-points also were developed to classify time spent in sedentary- and stationary behaviors during free-living conditions. The cut-points tested had modest overall accuracy to classify sedentary time as compared to direct observation. New ActiGraph 1-minute vector cut-points increased overall accuracy for classifying sedentary time. Project 3 examined the accuracy of the sedentary sphere by testing various arm elevation- and movement-count configurations using GENEActiv and ActiGraph GT3X+ data obtained during free-living conditions. None of the configurations were equivalent to the criterion measure of direct observation. The best configuration of the GENEActiv was: worn on the dominant wrist at 15 degrees below the horizontal plane with a cut-point <489 for each 15-second interval. The best configuration for the ActiGraph was: worn on the non-dominant wrist at 5° below the horizontal plane with a cut-point of <489 counts for each 15-second interval. Collectively, these findings indicate that the wearable monitors and methods examined in this study are limited in their ability to assess sedentary behaviors and light intensity physical activity. Additional research is needed to further understand the scope and limitations of wearable monitors and methods used to assess sedentary behaviors and light intensity physical activity.

ISBN: 9781369730999Subjects--Topical Terms:

3168359
Health sciences.

Monitors-Based Measurement of Sedentary Behaviors and Light Physical Activity in Adults.
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