Healthy Subjects
Conditions
Brief summary
The hypothesis of this study is to evaluate the effect of supplementation for 8 weeks on the improvement of cognitive functions in healthy seniors with or without mild cognitive decline.
Interventions
After randomization (visit V1), subjects will consume orally 2 capsules per day, during the breakfast, for 8 weeks (from visit V1 to visit V3).
After randomization (visit V1), subjects will consume orally 2 capsules per day, during the breakfast, for 8 weeks (from visit V1 to visit V3).
Sponsors
Study design
Intervention model description
This study is designed as a multicentric, randomized, parallel arms, double-blind, placebo-controlled clinical trial.
Eligibility
Inclusion criteria
* Age between 55 and 70 years (limits included), * Subjects with mild cognitive decline (MMSE between 21 and 24, including bounds) and healthy (MMSE \>24 to 30). * Subject with a Hamilton Anxiety Scale score between 5 and 17 (limits included), * BMI between 18.5 and 29.5 kg/m² (limits included), * Menopausal woman without hormone replacement therapy (at least 12 months without menstruation), * Stable diet for at least 3 months, * Blood pressure below 14/90 mm HG, * With no significant change in dietary habits or physical activity during the 3 months preceding randomization and agreeing to maintain them unchanged throughout the study, * Good general and mental health with in the opinion of the investigator: no clinically significant and relevant abnormalities of medical history or physical examination, * Able and willing to participate to the study by complying with the protocol procedures as evidenced by his dated and signed informed consent form, * Affiliated with a social security scheme, * Agree to be registered on the volunteers in biomedical research file.
Exclusion criteria
* Suffering from a metabolic disorder such as diabetes treated or not, uncontrolled thyroidal trouble or other metabolic disorder, * Suffering from a serious chronic disease (cancer (ongoing and if in remission for less than 5 years), HIV, renal failure, ongoing biliary or liver disorder, psychiatric pathologies (bi-polar disorders, depression, degenerative brain diseases (Alzheimer, vascular dementia, etc.), immunodeficiency, uncontrolled heart disease, arthritis, chronic respiratory disorder, chronic inflammatory digestive disease or a gastrointestinal disorder deemed incompatible with driving the vehicle. ), immunodeficiency, uncontrolled heart disease, arthritis, chronic respiratory disorder, chronic inflammatory digestive disease or a gastrointestinal disorder deemed incompatible with the conduct of the study by the investigator (e.g. celiac disease, Crohn's disease, irritable bowel disease, etc.). * For Women: Non-menopausal woman or menopausal woman with hormone replacement therapy * Consuming more than 5 cigarettes per day, * With a known or suspected food allergy or intolerance or hypersensitivity to any of the study products' ingredient, * Under antioxidant treatment (vitamin A, C, E, β-carotene, lutein, lycopene, selenium, Ginkgo biloba, dehydroepiandrosterone, polyphenol in the broad sense, phytoestrogen, ...), sedative drugs (neuroleptics, benzodiazepines, anxiolytics, hypnotics) and related drugs, antidepressants, antipsychotics, mood stabilizers, (hypnotic anti-histamines... ), cognitive treatment or dietary supplements that could affect the parameters monitored during the study in the opinion of the investigator or in the month preceding the V1 visit. * Volunteer consuming no more than 400mg/d of total caffeine in a day (addition of beverages such as coffee, tea, energy drinks and soft drinks), \[6 espressos = 162mg of caffeine and 4 mugs of filter coffee = 380mg, 8 cups of black tea = 360mg\]. * Having a consumption of herbal infusions or waters \> 2 liters / day * Presenting a high probability of non-compliance with the protocol or of dropping out during the study (geographical instability, insufficient motivation, psychological profile, etc), * Drinking more than 2 glasses of alcohol per day, every day and without interruption, and not willing to keep their drinking habits unchanged throughout the study * Taking part in another clinical trial or being in the exclusion period of a previous clinical trial * Having received, during the last 12 months, indemnities for clinical trial higher or equal to 4500 Euros, * Under legal protection (guardianship, wardship) or deprived from his rights following administrative or judicial decision, * Presenting a psychological or linguistic incapability to sign the informed consent, * Impossible to contact in case of emergency.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The change in mental fatigue | up to 10 weeks | Mental fatigue is assessed twice on a VAS (Visual Analogue Scale) in the COMPASS test, which is a computerized test assessing cognitive functions. The first VAS is assessed following the cognitive Demand Battery comprising 3 tasks, namely a 3s serial subtraction task, a 7s serial subtraction task and another COMPASS task called Digit vigilance. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Evolution of global cognitive functioning | up to 10 weeks | Assessed with MMSE score |
| Evolution of cognitive function | up to 10 weeks | Assessed with COMPASS score |
| The frequency of adverse events | up to 10 weeks | The frequency of subjects with at least one AE (Adverse Event), SAE (Serious Adverse Event), treatment-emergent AE and treatment-emergent SAE and the number of corresponding events |
Countries
France