Assessing chronic fatigue syndrome: Self-reported physical functioning and correlations with physical testing.

Area of Science:

• Neurology
• Rehabilitation Medicine
• Psychosomatic Medicine

Background:

• Chronic Fatigue Syndrome (CFS) pathophysiology is poorly understood, with no established biomarkers or diagnostic physical tests.
• Current CFS diagnosis relies on subjective criteria (Fukuda's criteria), symptom exclusion, and self-report questionnaires.
• There is a need for objective assessment tools to improve CFS diagnosis and track treatment efficacy.

Purpose of the Study:

• To investigate associations between physical tests and self-report measures in CFS patients.
• To explore the potential of the Timed Loaded Standing (TLS) and Stops Walking with Eyes Closed while performing a secondary Cognitive Task (SWECCT) tests as objective CFS assessment tools.
• To evaluate correlations between physical test performance and subjective fatigue/functioning levels.

Main Methods:

• Cross-correlational design involving 27 female CFS patients.
• Administered Timed Loaded Standing (TLS) for trunk-arm endurance and SWECCT for gait automaticity.
• Utilized Checklist Individual Strength (CIS) and SF-36 (physical functioning, vitality subscales) for subjective assessments.

Main Results:

• Timed Loaded Standing (TLS) performance significantly correlated with the SF-36 physical functioning subscale (p=0.004).
• No other statistically significant correlations were found between TLS, SWECCT, and the CIS or other SF-36 subscales.
• This suggests limited objective physical correlates for subjective fatigue and cognitive/gait impairments in this cohort.

Conclusions:

• The Timed Loaded Standing (TLS) test demonstrates potential as an objective measure for CFS assessment.
• TLS may aid in supporting CFS diagnosis and monitoring treatment response.
• Further research is needed to validate TLS and explore other objective measures for CFS.