Metabolism is controlled by macro- and micronutrients. Protein-rich diets should lead to latent acidosis at tissue level with further negative implications. Food supplements with alkaline salts are available and popular pretending to prevent these changes. Within a randomized double-blind placebo-controlled trial, the investigators tested the hypotheses 1) that a 4-week protein-rich diet induces a latent tissue acidosis and 2) an alkaline supplement can compensate this. Acid-base balance and important metabolic parameters were determined before and after 4 weeks of supplementation by peripheral blood samples, indirect calorimetry and muscle microdialysis before and after a protein-rich test meal.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
40
blood and tissue alkalinisation
no blood and tissue alkalinisation
Change in muscle dialysate lactate-pyruvate ratio
surrogate measure for muscle tissue pH
Time frame: before and after 4-weeks of supplementation at baseline (after a 12 hours overnight fast) and 60, 120, and 180 minutes after a protein-enriched test meal
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