Exploring Changes in Activity Patterns in Individuals with Chronic Pain.

Area of Science:

• Rehabilitation science
• Pain management
• Behavioral medicine

Background:

• Chronic musculoskeletal pain affects activity patterns.
• Understanding longitudinal changes in behavior is crucial for pain management.
• Activity patterns may influence pain perception and persistence.

Purpose of the Study:

• To investigate changes in self-reported activity patterns over 15 days in individuals with chronic musculoskeletal pain.
• To examine the relationship between activity patterns, pain intensity, and demographic factors.
• To identify specific activity patterns that exhibit linear change over time.

Main Methods:

• Longitudinal study design with 56 participants.
• Daily self-reporting of pain intensity and specific activity patterns.
• Linear mixed models with random coefficients to analyze changes in activity patterns.
• Controlled for age, sex, pain intensity, and pain duration.

Main Results:

• Excessive persistence was the only activity pattern showing a linear decrease over 15 days.
• The rate of decrease in excessive persistence was slower with higher levels of activity avoidance.
• No significant associations were found between baseline characteristics (age, sex, pain intensity, duration) and excessive persistence.
• Baseline excessive persistence was positively associated with pain avoidance, pain-related persistence, and pacing to reduce pain.

Conclusions:

• Individuals with chronic musculoskeletal pain exhibit a decrease in excessive persistence over a short period.
• Activity avoidance moderates the change in excessive persistence.
• The observed activity pattern changes were not directly linked to longitudinal changes in pain intensity in this cohort.