Relationships Between Performance-Based Tests and Patients' Ratings of Activity Limitations, Self-Efficacy, and Pain in Fibromyalgia

The majority of the performance-based tests and the patients' subjective ratings of activity limitations showed significant relationships. The 6MWT and hand grip strength, reflecting activity limitations in the SF-36, FIQ, and ASES, are recommended for use in clinical research and in the clinical examination when planning treatment for patients with fibromyalgia.