causal
Taking 3 grams of glycine before bed helps people reach deep sleep faster, as measured by sleep monitoring equipment.
Scientific Claim
A single 3g dose of glycine before bedtime significantly reduces the time to reach slow wave sleep in adults with chronic poor sleep, as measured by polysomnography (PSG) (P=0.019).
Original Statement
“glycine ingestion significantly shortened [...] to slow wave sleep (SWS) (latency to the first appearance of stage 3, P=0.019)”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The RCT design with objective PSG measurements and statistical significance (P=0.019) supports causal language. The study specifically measured this outcome and found significant results.
Evidence from Studies
Supporting (1)
0
Contradicting (0)
0
No contradicting evidence found