Chronic fatigue
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: All subjects: • >= 18 years = 40 on the subscale fatigue severity of the Checklist Individual Strength (CIS); • Severely disabled; i.e scoring >= 700 in the Sickness Impact Profile r_08 (SIPr08) total score; ;Healthy control: • Scoring
Exclusion criteria
Exclusion criteria: • Infection or inflammation at the day of testing (Body temperature >= 38°C); • Any injury to the right hand that confounds hand grip performance; • A maximal voluntary contraction (MVC) that exceeds the maximal dispersion of the hand grip device (>400 Newton) • (History of) long term use of anti-depressants, anti-anxiety medications, beta-blockers benzodiazepines, psycho-stimulants or sleep medication; • Current major depressive or bipolar disorder • (History of) Schizophrenia or delusional disorder. • (History of) Anorexia nervosa or bulimia nervosa • (History of) alcohol or substance abuse • Severe obesity (BMI >= 40) • Abnormal hearing or (uncorrected) vision;;MRI Contraindications: • Irremovable metal objects in or around the body (e.g. braces, pacemaker, metal fragments, hearing devices); • Claustrophobia; • (History of) Epilepsy; • Possible pregnancy or breastfeeding;
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main study parameters/endpoints: - Blood Oxygenation Level Dependent (BOLD) signal as measured with functional Magnetic Resonance Imaging (fMRI) - Cerebral tissue properties as measured with Magnetic Resonance Imaging (MRI) and Diffusion Tensor Imaging (DTI). - GABA and NAA concentration as determined by MR-spectroscopy - Behavioural performance on computerized tasks - Subjective measurements, e.g. self-report questionnaires, visual analogue scales - (Psycho) Physiological recordings e.g. surface electromyography (EMG) recordings, hart rate and respiration. - Cortisol and cytokine protein concentrations from hair, saliva and blood samples - Markers of sleep as measured with an ambulant electroencephalogram recording system | — |
Secondary
| Measure | Time frame |
|---|---|
| nvt | — |
Countries
Netherlands