The purpose of this study is to evaluate the effects of KA-EX supplementation on recovery parameters in elite young football players. Athletes from the Udine Primavera team will be randomly assigned to receive either the KA-EX supplement or a sensory-matched placebo immediately following their training sessions for a period of two months.
The researchers will monitor heart rate variability (HRV) and sleep quality using Garmin wearable devices, and assess changes in body composition using Dual-energy X-ray absorptiometry (DEXA) and bioelectrical impedance analysis (BIA). The goal of the study is to determine if post-training KA-EX administration improves physiological recovery, sleep quality, and physical readiness in high-performance athletes during a competitive season.
Membership of the Udine Primavera team at the time of the study. Regular participation in the training programme during the intervention period (September).
Presence of any injury or medical condition that limits normal participation in team training sessions.
Parallel
KA-EX
Dietary supplementPowder sachet to be dissolved in water. Contains a patented complex of amino acids, electrolytes, and carbohydrates designed to normalize cortisol and support recovery.
Experimental: KA-EX Supplement
Dietary supplementPowder sachet with identical organoleptic characteristics but without the active recovery ingredients of KA-EX.
Change from Baseline in Heart Rate Variability (rMSSD)
Autonomic recovery assessed as Root Mean Square of Successive Differences (rMSSD) during nocturnal sleep via Garmin wearable devices. Higher values indicate better parasympathetic recovery.
Change from Baseline in Sleep Score
Overall sleep quality score calculated by Garmin's proprietary algorithm based on sleep duration, REM, and deep sleep cycles.
Change from Baseline in Recovery Readiness Index
Daily readiness score (Body Battery) obtained via Garmin wearable algorithm. Scores range from 0 to 100; higher scores indicate greater physical readiness for training.
Body Composition
Body composition assessed at week 8. Lower values indicate reduction
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Antonio Molina Lopez
Lead sponsor
Universidad Pablo de Olavide
Sponsor institution
Universidad Europea de Madrid
Collaborator
University of Udine
Collaborator
Universidad Pablo de Olavide
Collaborator
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