Stress Clinical Trial
Official title:
A Colon-delivered Multivitamin Supplement to Support Vigilance and Cognitive Performance Under Stressful Working Conditions in Military Subjects
This study aims to examine the effects of a 6-week colon-delivered multi-vitamin supplement intervention on cognitive performance and stress levels in military under real-life, stressful working conditions. The study is a randomized, double-blind, placebo-controlled, parallel trial in a real-life setting (military field exercise). The intervention product is a nutritional supplement, composed of vitamins B2, B3, B6, B9, C, and D3. These vitamins will be delivered in the colon where most of these vitamins can be utilized by the gut microbiota, as they act as cofactors for important cellular functions. The main study outcome is the backward digit span (DS) score in a cognitive test, during the field exercise as compared to the start of the 6-week supplementation period. Secondary parameters are other cognitive test scores and a combined (z-scored) cognitive performance score. Stress levels will be measured in salivary cortisol and self-perceived stress levels will be derived from the HADS and PSS-10 questionnaire. Other stress biomarkers (e.g. heart rate variability) will be measured by a wearable.
Status | Recruiting |
Enrollment | 90 |
Est. completion date | July 1, 2023 |
Est. primary completion date | July 1, 2023 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years to 50 Years |
Eligibility | Inclusion Criteria: - Aged between 18-50 years old - Participating in military field exercise - BMI between 18.5 - 30 kg/m2 - Stable body weight (< 5 kg change) over the past 3-months; Exclusion Criteria: - Food allergies or other issues with foods that would preclude intake of the study products - History of gastro-intestinal surgery or gastro-intestinal complaints or gastrointestinal diseases (i.e., diarrhoea, Crohn's disease, ulcerative colitis, irritable bowel syndrome, diverticulosis, stomach or duodenal ulcers) - Suffering from metabolic, neuro-psychiatric disease (i.e., diabetes, hepatitis, HIV, cancer, epilepsy, major depression, AD(H)D, schizophrenia, etc.) - Taking medication related to gut diseases or stress - Being severely immunocompromised (HIV positive, transplant patient, on antirejection medications, on a steroid for >30 days, or chemotherapy or radiotherapy within the last year); - Use of antibiotics within the previous 3 months - Not willing to refrain from taking other supplements during the intervention period - Pregnant, lactating or having a wish to become pregnant during the study - History of drug and/or alcohol abuse at the time of enrolment - Using doctor described drugs related to gut or neurological/psychiatric diseases - Alcohol intake > 3 servings of alcoholic beverages per day - Planned major changes in lifestyle (i.e. diet, dieting, exercise level, travelling) during the duration of the study - Suffering from an eating disorder - Vegetarian/vegan diet or other issues with foods that would preclude intake of the study products - High fibre diet (i.e. >30 g) based on our fibre intake screening tool - Receiving treatment involving experimental drugs. If the subject has been in a recent experimental trial, these must have been completed not less than 60 days prior to this study. |
Country | Name | City | State |
---|---|---|---|
Netherlands | Stichting Wageningen Research | Wageningen | Gelderland |
Lead Sponsor | Collaborator |
---|---|
Wageningen University and Research | Circadian, DSM, Dutch Ministry of Defense, Radboud University Medical Center, Thales |
Netherlands,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in backward digit span (DS) score | The backward DS score is related to working memory capacity. The score will be obtained from the forward/backward digit span cognitive task. | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in forward digit span (DS) score | The backward DS score is related to working memory capacity. The score will be obtained from the forward/backward digit span cognitive task. | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in attention-switching task score | Measuring interference control and cognitive flexibility | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in Go-NoGo task score | By measuring response inhibition and sustained attention/vigilance | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in overall cognitive performance score | Calculate z-score from all three cognitive tests | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in stress level | Measured in salivary cortisol | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in self-perceived stress levels | Derived from the HADS and PSS10 questionnaire scores | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in dietary fibre intake | Derived from fibre screening questionnaire | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) | |
Secondary | Change in sleep quality | Derived from the Pittsburgh Sleep Quality Index questionnaire | Baseline (before supplementation (T0)), after 5 weeks (T1) and after a field exercise after 6 weeks (T2) |
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