Validity and Reliability of the 2-minute Step Test in Patients With Fibromyalgia

This cross-sectional study will include 55 female patients aged 18-65 who will be diagnosed with fibromyalgia according to the American College of Rheumatology 2010 Diagnostic Criteria. Demographic characteristics of the patients will be documented. The extent of impact on patients' quality of life will be evaluated using the Fibromyalgia Impact Questionnaire (FIQ), while the severity of chronic fatigue will be measured using the Fatigue Severity Scale (FSS). The intensity of chronic pain experienced by patients will be expressed using the Visual Analogue Scale (VAS). All patients will undergo an initial assessment using the 2-Minute Step Test (2MST), 2-Minute Walk Test (2MWT), and 6-Minute Walk Test (6MWT). To assess test-retest reliability, the 2MST will be repeated with a 7-day interval between assessments.

Inclusion criteria

• Having been diagnosed with fibromyalgia according to the American College of Rheumatology 2010 Diagnostic Criteria
• Female patients aged 18-65
• The absence of any pathological condition that would hinder walking

Exclusion criteria

• Uncontrolled hypertension
• Decompensated heart failure
• Presence of systemic diseases affecting lower extremity functions
• Presence of degenerative diseases affecting lower extremity functions
• Peripheral artery disease causing vascular claudication
• Psychiatric illness
• Neuromuscular disease
• Pregnancy
• Cognitive impairment