Differences in the Modified Disablement in the Physically Active Scale in Those With and Without Chronic Ankle...

Area of Science:

• Orthopedics
• Rehabilitation Medicine
• Sports Medicine

Background:

• The modified Disablement in the Physically Active scale (mDPA) is widely used for physically active individuals.
• Its factor structure has not been validated in chronic ankle instability (CAI) populations.
• Further research on mDPA utility in CAI is needed.

Purpose of the Study:

• To confirm the factor structure of the mDPA in individuals with CAI.
• To compare physical summary component (PSC) and mental summary component (MSC) scores between CAI and healthy individuals.

Main Methods:

• Cross-sectional laboratory study.
• 118 individuals with CAI and 81 healthy controls completed the 16-item mDPA.
• Confirmatory factor analysis and independent t-tests were used to analyze data.

Main Results:

• The two-factor structure (PSC and MSC) demonstrated adequate fit for the mDPA in the CAI group.
• Individuals with CAI reported significantly higher PSC scores compared to healthy controls (P < .001, ES = 1.67).
• A moderate effect size was observed for MSC scores between groups (P < .001, ES = 0.53).

Conclusions:

• The two-factor structure of the mDPA is validated for use in individuals with CAI.
• The mDPA is a suitable generic patient-reported outcome measure for assessing disablement in this population.
• Further investigation into the moderate differences in mental well-being between groups is warranted.