Back to Study: Glycine ingestion improves subjective sleep qualit...
causal
neutral effect
Taking 3 grams of glycine before bed doesn't change how quickly people respond in memory tasks.
Scientific Claim
A single 3g dose of glycine before bedtime does not significantly affect reaction time in memory tasks in adults with chronic poor sleep.
Source Excerpt
“No significant changes in the reaction time were observed (Fig. 8b)”
Evidence from Studies
Supporting Studies
Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes
Crossover Trial
View study →30%
Evidence Assessment
Supported
The study measured reaction time in memory tasks and found no statistically significant changes after glycine ingestion compared to placebo. This provides causal evidence that glycine doesn't affect motor response speed in cognitive tasks.