The Effects of Apathy on Different Forms of Fatigue

Study Overview
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Brief Summary
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60 participants with light neuro-cognitive disorders (30 apathetic, 30 non-apathetic) will be recruited from the CMRR (Centre Mémoire Ressources et Recherche) in Nice University Hospital and from the  Fragilily  Platform of the Nice University Hospital. After verification by the investigator, if they meet the inclusion criteria and sign the informed consent, participants will have to wear an actigraph for one week in order to measure their level of activity. Afterwards, participants will have to complete assessments and questionnaires to evaluate apathy (Apathy Motivation Index, Apathy Inventory), perceived fatigue (Fatigue Severity Scale, Borg scale), fatigability (6-min walking test, isometric strength test, double task), the stress level (Perceived Stress Scale) and depression (Geriatric Depression Scale). Regarding the activity level, they will also be asked to perform tasks to evaluate their kinematic movements( through an actigraph), and their particular sensitivity towards effort and reward (through serious game 'Tap-piscine'). The total duration of the evaluation is a maximum of 2 hours.

Official Title
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FAME 1: The Effects of Apathy on Different Forms of Fatigue

Conditions
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Apathy, Fatigue

Intervention / Treatment
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* Other: Follow up and Assessment


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Men or women aged between 65 and 85 years old coming for consultation at the RMC and the Fragility Platform DSM-5 diagnosis: minor neurocognitive disorders Subject must read and write in French. Subject must be registered in the national social security scheme. Ability to sign free and informed consent. For the 'apathetic' group: - Presence of apathy/emotional symptoms: at least 2 criteria according to the diagnostic criteria for apathy and a score higher than 8.5 in the MBI affective dimension. For the 'non-apathetic' group: - Absence of apathy/emotional symptoms: no criteria according to the diagnostic criteria for apathy and a score of less than 8.5 in the MBI affective dimension. Exclusion Criteria: Motor or sensory disabilities likely to interfere with the tests. Presence of major psychiatric disorders (e.g., schizophrenia, major depressive episode, bipolar disorder) Patient under guardianship, curatorship or under legal protection

Ages Eligible for Study
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Minimum Age: 65 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Fatigue Severity Scale scores assessment<br>Fatigue Severity Scale scores assessment | Other: Follow up and Assessment<br>* each patient should wear an actigraph during a week and will be do some tests during 2hours (6min walk, apathy inventory, fatigue severity scale etc...)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| comparison of Fatigue Severity Scale scores between apathetic and non-apathetic subjects. | the minimum score is 9 (worse outcome) and the maximum score is 63 (better outcome) | at inclusion |