Objectively-assessed physical activity and self-reported activity pacing in adults with multiple sclerosis: A pilot study

Abonie, Ulric, Saxton, John, Baker, Katherine and Hettinga, Florentina (2021) Objectively-assessed physical activity and self-reported activity pacing in adults with multiple sclerosis: A pilot study. Clinical Rehabilitation, 35 (12). pp. 1781-1788. ISSN 0269-2155

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Abstract

Objective:
To examine the association between self-reported activity pacing (a strategy to manage fatigue symptoms) and objectively-measured physical activity behaviours in adults with multiple sclerosis.

Design:
Single cross-sectional study

Setting:
Multiple sclerosis rehabilitation centre in Colchester, United Kingdom.

Subjects:
Twenty-one adults (59 ± 9 years) with multiple sclerosis.

Main measures:
Physical activity behaviours (activity level: activity counts per minute; activity variability: highest activity counts per minute each day divided by activity counts per minute on that day) were measured with accelerometers. Self-reported activity pacing (Activity Pacing and Risk of Overactivity Questionnaire), fatigue severity (Fatigue Severity Scale) and health-related quality of life (RAND-12-Item Short-Form Health Survey) were measured. Scatter plots were used to explore associations between measures.

Results:
Activity level was 258 ± 133 counts per minutes, activity variability was 4 ± 1, self-reported activity pacing was 3 ± 1, fatigue severity was 5 ± 2 and health-related quality of life was 43 ± 8. Increased self-reported activity pacing was associated with lower activity levels and less variability in daily activities.

Conclusion:
This investigation suggests that people with multiple sclerosis who have low physical activity levels could be inappropriately using activity pacing as a reactionary response to their multiple sclerosis symptoms.

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