About this trial
This study investigates whether taking the amino acid L-serine, either alone or in combination with targeted strength training, can have a positive effect on mental performance, brain function, and physical fitness in older people.
Healthy, independent women and men aged 65 to 85 are eligible to participate. Participants will be randomly assigned to one of three groups: placebo, L-serine, or L-serine combined with strength training.
Cognitive tests, physical performance tests, and blood and brain tests will be conducted over a period of 48 weeks. The aim is to gain a better understanding of how nutrition and exercise can contribute to healthy aging.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Men and women between the ages of 65 and 85
Mini-Mental-State >23
Independently mobile, without aids (walker, cane, etc.)
Disqualifiers
Chronic diseases that contraindicate medical training therapy
Regular strength training (>1x/week) in the last 6 months before confinement
Frailty Index ≥ 3
Lack of written consent to test physical performance
Trial design
Parallel
Treatments tested in this trial
Strength training
BehavioralStructured strength training 2x/week
L-serine supplementation
Dietary supplementL-serine supplementation 6g/day
Control (cornstarch)
Dietary supplementPlacebo 6g cornstarch/day, No strength training
Treatment groups
Trial outcomes
Primary outcomes
Change in cognitive performance measured by the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS)
Global cognitive performance will be assessed using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), a standardized neuropsychological test battery that evaluates multiple cognitive domains including memory, attention, language, and visuospatial abilities. The primary outcome is the RBANS Total Scale Index score, which summarizes performance across the RBANS cognitive domains. RBANS index scores are standardized scores with a mean of 100 and a standard deviation of 15, typically ranging from approximately 40 to 160. Higher scores indicate better cognitive performance.
Secondary outcomes
Change in cognitive domain performance measured by index scores of RBANS
The RBANS provides standardized index scores (mean = 100, standard deviation = 15) that typically range from approximately 40 to 160, with higher scores indicating better cognitive performance. The following RBANS domain indices will be evaluated: Immediate Memory Index, Visuospatial/Constructional Index, Language Index, Attention Index, and Delayed Memory Index.
Change in hippocampal volume measured by magnetic resonance imaging (mm³)
Change in hippocampal functional connectivity measured by functional magnetic resonance imaging
Change in oscillatory brain activity measured using electroencephalography
Sponsors and contacts
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University of Vienna
Lead sponsor
Medical University of Vienna
Collaborator