Abstract
ObjectiveTo determine the reliability and validity of the Multimedia Activity Recall for Children and Adults (MARCA) in people with chronic obstructive pulmonary disease (COPD).DesignPeople 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®).SettingSelf reported activity recalls (MARCA) and objective activity monitoring (Accelerometry) were recorded under free-living conditions.Participants24 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%).InterventionsNot applicable.Main Outcome Measure(s)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).ResultsReliability 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.ConclusionIn 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.
Highlights
How we use our time, that is the activities we engage in, can lead to health benefits
Understanding how people use their time and the time they spend in different kinds of activities or behaviours, is increasingly importantly as evidence indicates that are lifestyles linked to health benefits, but the specific activities within those lifestyles are linked to health benefits independent of the energy expenditure associated with the activity
Thirty couples agreed to participate and were provided with activity monitors, one couple withdrew, one couple provided incomplete Multimedia Activity Recall for Children and Adults (MARCA) interview data, one couple did not meet spirometric chronic obstructive pulmonary disease (COPD) criteria and equipment malfunctioned for three couples, leaving a final sample of 24 couples
Summary
How we use our time, that is the activities we engage in, can lead to health benefits. Understanding how people use their time and the time they spend in different kinds of activities or behaviours, is increasingly importantly as evidence indicates that are lifestyles linked to health benefits, but the specific activities (i.e. sleep [9], social interaction [10,11,12] and cognitive activities [13,14]) within those lifestyles are linked to health benefits independent of the energy expenditure associated with the activity. They document every activity a person engages in and obtain important contextual information about specific types and patterns of activities Despite their use in healthy adolescents [15] and adults [16], these assessments have rarely been used in populations with chronic illnesses. Significant differences between the time use patterns observed in youth and adulthood and those observed in people with COPD are likely, in part because people with COPD are generally older and because this population may; not be in full time employment; have less structured days; and may have varying degrees of cognitive impairment
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