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Convergent Validity Of Self-report Sedentary Behavior And Accelerometry: Comparing Multiple Cut Points

To (i) evaluate the convergent validity of a Spanish language self-report measure of SB (SBSR) compared to an objective measure (ActiGraph GT3X accelerometer) of sedentary time, and (ii) examine how associations between self reports of SB and objective data vary as a function of the accelerometer cu...

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Published in:Medicine and science in sports and exercise 2012-05, Vol.44 (5S), p.679-680
Main Authors: Merchant, Gina, Parada, Humberto, Marshall, Simon J
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creator Merchant, Gina
Parada, Humberto
Marshall, Simon J
description To (i) evaluate the convergent validity of a Spanish language self-report measure of SB (SBSR) compared to an objective measure (ActiGraph GT3X accelerometer) of sedentary time, and (ii) examine how associations between self reports of SB and objective data vary as a function of the accelerometer cut point used to define sedentary time. A community sample of 71 female participants (M sub(age)=41.61; SD=9.28; M sub(BMI)=30.07; SD=5.60) recruited to a PA intervention completed a 12 item SBSR and wore an accelerometer for 600 minutes/day for 5 days or 3000 minutes total. Almost half of the participants were born in Mexico (47%) and the majority of participants self-identified as Latino (79%), was married (62%), and employed for wages (75%). Mean SB min.dy super(-1) was 374 (+ or -72) for SB50, 443 (+ or -74) for SB100, and 486 (+ or -72) for SB150. SBSR total time was marginally correlated with SB50 (r=.22; p=.07). Correlations between total SBSR and SB100 and SB150 were (r=.19; p=.12) and (r=.20; p=.10), respectively.
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title Convergent Validity Of Self-report Sedentary Behavior And Accelerometry: Comparing Multiple Cut Points
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