Validity of sitting time scores from the International Physical Activity Questionnaire–Short Form in multiple sclerosis.

Abstract

The current study examined the validity of scores from the sitting time item on the International Physical Activity Questionnaire-Short Form (IPAQ-SF) in a sample of persons with multiple sclerosis (MS). Method: Persons with MS were recruited through the distribution of printed letters to a random sample of 1,000 persons from the North American Research Committee on MS registry. Two hundred ninety-five persons with MS were interested and volunteered to wear an ActiGraph accelerometer for a 7-day period and complete a battery of questionnaires that included the IPAQ-SF and Godin Leisure-Time Exercise Questionnaire over this period of time. Results: IPAQ-SF sitting time scores were consistently and moderately correlated with all of the sedentary behavior metrics from the accelerometer (range of r between .295 and .431), and the correlations were stronger than those between self-reported physical activity and sedentary metrics from the accelerometer (range of r between Ϫ.087 and .163). The correlations between IPAQ-SF sitting time scores with the accelerometer-derived sedentary behavior metrics were still statistically significant in the analyses controlling for physical activity (range of parametric correlations between .281 and .411). Conclusions:The correlation analysis indicated consistent, moderate correlations between IPAQ-SF sitting time scores and device-measured estimates of both the volume and pattern of sedentary behavior, and the correlations were (a) stronger than those for self-reported physical activity and (b) independent of self-reported physical activity. Such results provide initial evidence for the validity of inferences from IPAQ-SF sitting time scores as an overall measure of sedentary behavior in persons with MS. Impact and ImplicationsThere is an abundance of research on physical activity in multiple sclerosis, but much less is known about sedentary behavior. This study provides evidence for the validity of inferences from the International Physical Activity Questionnaire-Short Form sitting time scores as a measure of sedentary behavior in multiple sclerosis. The evidence provides support for meaningful interpretations from existing and future research on the prevalence, correlates, and interventions focusing on sedentary behavior in multiple sclerosis.

Physical Activity, Resilience, Sense of Coherence and Coping in People with Multiple Sclerosis in the Situation Derived from COVID-19

“…If we compare the time spent sitting down per week collected with the IPAQ of our sample with the study carried out by Moti et al [33], which analyzed people with MS in America, we find that our population has a slightly higher value. Furthermore, our data show elevated levels of physical activity.…”

Feasibility of “Sit Less, Move More”: An intervention for reducing sedentary behavior Among African Americans with MS

“…This was indicated by a reduction in self-reported sitting time on the IPAQ and device-measured sedentary behavior. These results are consistent with those from a recent study that demonstrated the validity of the sitting item from the IPAQ in people with MS. 35 Our secondary outcomes examined change in physical activity. There was a moderate treatment effect on physical activity, indicated by an increase in exercise participation measured via the GLTEQ.…”

Physical activity, sitting time and sleep duration before and during pregnancy and pregnancy outcomes: A prospective panel study

“…The exposures/activities and outcomes were self-reported and may be affected by recall bias and misclassification. However, previous studies suggested that data from self-reported measures on sitting time and sleep duration were comparable to those from objective measures (Jackson et al, 2018;Motl et al, 2019). Moreover, the exposure variables were collected before the outcomes occurred in the study, which may mitigate the concern about self-reported data and may enhance the study F I G U R E 3 Adjusted odds ratios of changes in activities among pre-, mid-and late pregnancy for Caesarean delivery, medically indicated Caesarean delivery and small for gestational age.…”

“…To measure sitting time, we used structured questions similar to those used in the previously validated "sitting questions" of the IPAQ (Motl, Sasaki, Cederberg, & Jeng, 2019): "How many hours were spent on sitting (on average) in a weekday/weekend during the last 2 weeks, including any types of screen viewing?" Since no previous research has identified a standard cut-off point to determine categories for sitting time in pregnancy, sitting time was stratified into two categories based on the median value of mid-and late pregnancy in this study (<8 or ≥8 hr).…”