Research Database

172 results for "Validation"

Incidental and Planned Exercise Questionnaire for Seniors: Validity & Responsiveness

  • Presented on April 2014

Purpose: To assess the criterion validity and responsiveness of the Incidental and Planned Exercise Questionnaire (IPEQ), specifically developed for aging research. Methods: Community-dwelling older adults (n=318, mean age 73.2 years) who participated in a trial investigating the effect of walking program on falls. At baseline a sub-sample (n=177) also wore an ...

Variability in Measuring Physical Activity in Children with Cerebral Palsy.

  • Published on May 12, 2014

Introduction: To establish the variability in the measurement of habitual physical activity (HPA) using the ActiGraph(R) GT3X+ accelerometer in children with cerebral palsy (CP). Method: Repeated measures: Independently ambulant children with unilateral CP (n=30; aged 11y3m [2y4m]) completed standardized tasks over two consecutive days wearing an ...

Comparison of older and newer generations of ActiGraph accelerometers with the normal filter and the low frequency extension

  • Published on April 25, 2013

Background: Many studies used the older ActiGraph (7164) for physical activity measurement, but this model has been replaced with newer ones (e.g., GT3X+). The assumption that new generation models are more accurate has been questioned, especially for measuring lower intensity levels. The low-frequency extension (LFE) increases the low-intensity sensitivity ...

Age-Group Comparability of Raw Accelerometer Output from Wrist- and Hip-Worn Monitors

  • Published on Feb. 5, 2014

Purpose: The study aims were to compare raw tri-axial accelerometer output from ActiGraph GT3X + (AG) and GENEActiv (GA) placed on the hip and the wrist and to develop regression equations for estimating energy expenditure. Methods: Thirty children (7-11 yr.) and 30 adults (18-65 yr.) completed eight activities (ranging from lying ...

Use of accelerometry to measure physical activity in older adults at risk for mobility disability

  • Published on Oct. 2008

Abstract: We explored using the ActiGraph accelerometer to differentiate activity levels between participants in a physical activity (PA, n=54) or `successful aging' (SA) program (n = 52). The relationship between a PA questionnaire for older adults (CHAMPS) and accelerometry variables was also determined. Individualized accelerometry count thresholds (THRESHIND) measured during a 400-m ...