Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Other |
Montreal Cognitive Assessment (MOCA) (cognitive assessment) |
Discrete number; score 0 - 30. Higher score indicates better cognitive performance (=26 indicates normal cognitive functioning) |
Baseline (T0) |
|
Other |
Baseline Demographics and medical history (questionnaire) |
Demographic information, medical history and medication use - qualitative assessment |
Baseline (T0) |
|
Other |
Change in 4DKL (questionnaire) |
(Psychosocial) complaints in daily life; separate scores for distress (>10 moderate, >20 severe), depression (>2 moderate, >5 severe), anxiety (>3 moderate, >9 severe) and somatisation (>10 moderate, >20 severe) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in EQ-5D-5L (questionnaire) |
Quality of life; score 0 - 100. Higher score indicate better quality of life |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in LIBRA (questionnaire) |
Modifiable dementia risk using lifestyle for brain health; score -5.9 - +12.7. Higher score indicates a worse outcome (higher dementia risk) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in Lubben Social Network Scale (questionnaire) |
Social contact and perceived social support; score 0 - 30. Higher score indicates a better outcome (higher level of perceived social support) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in SARC-F Sarcopenia questionnaire (questionnaire) |
Sarcopenia; score 0 - 10 (i.e. 0-2 points for each component; 0 = best to 10 = worst) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in Cognitive Emotions Regulation Questionnaire (questionnaire) |
Cognitive coping strategies. Answers are scored on a 7-point Likert-type scale ranging from 1 (strongly disagree) to 7 (strongly agree). The scoring takes the average of all the scores in each subscale of cognitive reappraisal and expressive suppression |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in Hospital Anxiety and Depression Scale (questionnaire) |
Anxiety and depression; separate scores for anxiety (0 - 21) and depression (0 - 21). For each domain, a score >8 indicates psychiatric condition of anxiety or depression |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in Starkstein Apathy Scale (questionnaire) |
Screen and measure apathetic symptoms. A higher total score (range 0-42) indicates more severe apathy, with a score greater than 14 or greater is indicative of clinical apathy |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in COVID status (questionnaire) |
Vaccination status, COVID history - qualitative assessment |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in Gastrointestinal symptoms questionnaire (questionnaire) |
Gastrointestinal symptoms, qualitative assessment |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Other |
Change in Bristol stool chart (questionnaire) |
Classification of faeces type, qualitative assessment |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in brain activity during working memory |
Blood-oxygen level dependent activity during N-back (2-back) fMRI task |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in working memory performance |
Task accuracy during N-back (2-back) fMRI task |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in cerebral perfusion levels |
Cerebral perfusion measured using arterial spin labelling (ASL) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in inflammatory profile in blood plasma: hs-CRP |
Blood plasma inflammatory profile analysis to measure hs-CRP level |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in inflammatory profile in blood plasma: IL-6 |
Blood plasma inflammatory profile analysis to measure IL-6 level |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in inflammatory profile in blood plasma: TNF-a |
Blood plasma inflammatory profile analysis to measure TNF-a level |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Primary |
Change in microbiota profile |
16S rRNA based profile of gut microbiota in faeces |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Body mass index |
Measured in kg/m^2 |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Waist circumference |
Measured in cm |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Hip circumference |
Measured in cm |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Blood pressure |
Measured by blood pressure monitor. Scores range from approximately (for diastolic) 60-120 and (for systolic) 100-180 mmHg, with higher scores indicating higher blood pressure. |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Abdominal fat distribution (neuroimaging) |
Visceral adipose tissue(VAT)/subcutaneous adipose tissue (SAT) ratio measured by abdominal T1-weighted MRI scan |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Brain structure volume profile (neuroimaging) |
Brain structure volumes (grey matter, white matter, brain vesicles), measured by MP2RAGE structural sequence |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Brain myo-inositol levels (neuroimaging) |
Brain myo-inositol levels reflecting local neuroinflammation in dorsolateral prefrontal cortex and hippocampus, measured by magnetic resonance spectroscopy (MRS) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Intracranial iron deposition (neuroimaging) |
Local aggregation of iron deposition within the brain, measured by quantitative susceptibility mapping (QSM) |
Baseline (T0) |
|
Secondary |
Change in Neuropsychological test battery scoring |
Z-scoring of cognitive assessments targeting cognitive domains predominantly affected by cognitive ageing: executive function (incl. working memory), episodic memory and processing speed |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Trail Making Test A (TMT-A) Numbers : trial time (cognitive assessment) |
Discrete number; score 0 - no maximum (seconds to assessment completion). Lower score indicates a better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Trail Making Test A (TMT-A) Numbers: errors (cognitive assessment) |
Discrete number; score 0 - no maximum (amount of errors). Lower score indicates a better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Trail Making Test B (TMT-B) Numbers and Letters : trial time (cognitive assessment) |
Discrete number; score 0 - no maximum (seconds to assessment completion). Lower score indicates a better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Trail Making Test B (TMT-B) Numbers and Letters: errors (cognitive assessment) |
Discrete number; score 0 - no maximum (amount of errors). Lower score indicates a better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Verbal Fluency Test (VFT) (cognitive assessment) |
Word count in one minute; score 0 - no maximum. Higher score indicates a better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Rey Auditory Verbal Learning Test (RAVLT): learning trials (cognitive assessment) |
Discrete number; score 0 - 15 (amount of words remembered during learning trial 1 to 5). Higher score indicates a better score |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Rey Auditory Verbal Learning Test (RAVLT): delayed recall (cognitive assessment) |
Discrete number; score 0 - 15 (amount of words remembered during delayed recall). Higher score indicates a better score |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Digit Symbol Substitution Test (DSST) (cognitive assessment) |
Discrete number; score 0 - 90 (amount of symbols correctly substituted). Higher score indicates better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Wechsler Adult Intelligence Scale (WAIS) digit span (cognitive assessment) |
Discrete number; score 0 - 90 (amount of digit spans correctly repeated). Higher score indicates better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Five Facet Mindfulness Questionnaire (questionnaire) |
Self-assessment of mindfulness; score 24 - 120. Higher score indicate more mindfulness |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Sedentary Behaviour Questionnaire (questionnaire) |
Average hours and minutes of sedentary behavior a day; score 0 - 24 hours. Higher score (more hours) indicates more sedentary behavior |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Eetscore food questionnaire (questionnaire) |
Dutch Healthy Diet Index 2015; score 0 - 160. Higher score indicates a better outcome |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Perceived Stress Scale (questionnaire) |
Stress perception; score 0 - 40. Higher score indicate more perceived stress |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Pittsburgh Sleep Quality Index (PSQI) (questionnaire) |
Sleep quality; score 0 - 21. Higher score (referred to as global or total score) indicates worse sleep quality |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in SQUASH (questionnaire) |
Physical activity. METs derived from the Ainsworth's compendium of physical activity will be used to classify physical activity intensity (<1.5METs- sedentary, 1.6-2.9 METs- light, 3.0-5.9METs- moderate, >6.0- vigorous physical activity) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Cognitive Failures Questionnaire (questionnaire) |
Subjective cognitive functioning; score 0 - 100. A higher score indicates more subjective cognitive failure |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Memory Self-Efficacy MIA (questionnaire) |
Self-evaluation and confidence of memory. Sum of Part 1 + Part 2A and B. Part 1: Strategy (scores 10 - 50, higher scores indicate more use of strategies), Part 2A: Subjective memory functioning (score 23 - 115, higher score indicates better memory self-efficacy) and Part 2B: Locus (score 7 - 35, higher scores indicate better perceived personal control over remembering abilities) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in total amount of bacteria, fungi and specific bacterial strains (faeces) |
Total amount of bacteria, fungi and specific bacterial strains are quantified using digital droplet PCR in faecal samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in individual short-chain fatty acids (SCFAs) profile (faeces) |
GC-MS and LC-MS measurements to assess profile of individual SCFAs in faecal samples (acetic acid, formic acid, propionic acid, isobutyric acid, butyric acid, isovaleric acid, valeric acid, 4-methyl valeric acid, hexanoic acid, heptanoic acid) |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in microbiome-derived bioactive compounds (faeces) |
Amount of microbiome-derived bioactive compounds is measured by untargeted LC-MS microbiota-derived metabolite analysis in faecal samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in intestinal inflammation profile (faeces) |
Assay-based profile of intestinal inflammation measured in faecal samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in Gut transit time |
Gut transit time measured by blue muffin consumption and appearance in faeces |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in metabolic profile (blood) |
Assay-based profile of (energy) metabolism measured in plasma samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in inflammation profile (blood) |
Assay-based profile of systemic inflammation measured in plasma samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in intestinal integrity profile (blood) |
Assay-based profile of intestinal integrity measured in plasma samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in brain health profile (blood) |
Assay-based profile of brain health measured in plasma samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in white blood cell count (blood) |
White blood cell count measured via finger prick analysis |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|
Secondary |
Change in small intestinal bacterial overgrowth (SIBO) (breath) |
Measurement of total exhaled hydrogen gas after glucose consumption in breath samples |
Change between Baseline (T0) and Follow-up after 6 months (T1) |
|