Health and Use of Time Group, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia
Hurricane Sally Update
The ActiGraph office is open, and we have resumed normal operations as of Monday, September 21st. Shipping delays are still possible as our community recovers from the storm. If you need immediate assistance, please contact us by email at email@example.com and we will respond as quickly as possible. Thank you for your continued support.
Reliability and validity of the multimedia activity recall in children and adults (MARCA) in people with chronic obstructive pulmonary disease.
- Published on Nov. 27, 2013
Objective: To determine the reliability and validity of the Multimedia Activity Recall for Children and Adults (MARCA) in people with chronic obstructive pulmonary disease (COPD).
Design: People with COPD and their carers completed the Multimedia Activity Recall for Children and Adults (MARCA) for four, 24-hour periods (including test-retest of 2 days) while wearing a triaxial accelerometer (Actigraph GT3X+®), a multi-sensor armband (Sensewear Pro3®) and a pedometer (New Lifestyles 1000®).
Setting: Self reported activity recalls (MARCA) and objective activity monitoring (Accelerometry) were recorded under free-living conditions.
Participants: 24 couples were included in the analysis (COPD; age 74.4 ± 7.9 yrs, FEV1 54 ± 13% Carer; age 69.6 ± 10.9 yrs, FEV1 99 ± 24%).
Interventions: Not applicable.
Main Outcome Measures: Test-retest reliability was compared for MARCA activity domains and different energy expenditure zones. Validity was assessed between MARCA-derived physical activity level (in metabolic equivalent of task (MET) per minute), duration of moderate to vigorous physical activity (min) and related data from the objective measurement devices. Analysis included intra-class correlation coefficients (ICC), Bland-Altman analyses, paired t-tests (p) and Spearman’s rank correlation coefficients (rs).
Results: Reliability between occasions of recall for all activity domains was uniformly high, with test-retest correlations consistently >0.9. Validity correlations were moderate to strong (rs = 0.43-0.80) across all comparisons. The MARCA yields comparable PAL estimates and slightly higher moderate to vigorous physical activity (MVPA) estimates.
Conclusion: In older adults with chronic illness, the MARCA is a valid and reliable tool for capturing not only the time and energy expenditure associated with physical and sedentary activities but also information on the types of activities.
- Toby Hunt 1, 2
- Marie T. Williams 3, 4
- Tim S. Olds
Respiratory Clinical Research Unit, Repatriation General Hospital, Daw Park, South Australia, Australia
School of Population Health, University of South Australia, Adelaide, South Australia, Australia
Centre for Nutritional Physiology, University of South Australia, Adelaide, South Australia, Australia