Synergistic Effects of Green Tea Extract and Ginger Supplementation on Endurance Performance and Thermal Perception in Normal and Cold Environments: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study
Synergistic Effects of Green Tea Extract and Ginger Supplementation on Endurance Performance and Thermal Perception in Normal and Cold Environments: A Randomized, Double-Blind, Placebo-Controlled, Crossover Study
Objectives: The purpose of this study is to examine how meal timing in a one-meal-a-day (OMAD) regimen influences neurocognitive outcomes.
Methods: Twelve cognitively active participants (academics, students, software engineers) will complete three randomized OMAD conditions, consuming a standardized isocaloric meal at 08:00, 12:30, or 18:00. ERPs will be recorded during a computerized Stroop task to evaluate peak amplitudes and latencies under congruent and incongruent conditions. Resting-state EEG will be measured under eyes-open and eyes-closed conditions. Behavioral performance on the Stroop task, including reaction time and accuracy, will also be assessed.
Inclusion Criteria:
Male, 20 to 45 years of age
Right-handed
Normal or corrected-to-normal vision
Cognitively active individuals (academic staff, graduate students, or software/algorithm engineers)
Regular sleep-wake schedule during the week preceding the experiment
Ability to abstain from caffeine, alcohol, or psychoactive substances for at least 24 hours prior to each test session
Body mass index between 18.5 and 30 kg/m²
Exclusion Criteria:
History of neurological, psychiatric, metabolic, or sleep disorders
Current use of medications that affect the central nervous system
Shift work or irregular sleep patterns (verified by sleep diary)
Prior experience with one-meal-a-day dietary routines
Body mass index below 18.5 or above 30 kg/m²