What does the research say about magnesium supplementation and sleep quality?
Sleep is critical for athletic recovery and performance, yet many athletes fail to achieve adequate sleep quality. Magnesium plays a key role in sleep regulation through its effects on GABA receptors and the nervous system. Magnesium L-threonate uniquely crosses the blood-brain barrier, making it a promising candidate for improving sleep architecture in athletes. Our research aims to fill the gap — no prior studies have evaluated MgT specifically in competitive athletes.
Arab A, Rafie N, Amani R, Shirani F.
Systematic review of 9 studies (7,582 subjects). Observational studies suggest an association between magnesium status and sleep quality, but randomized controlled trials showed contradictory findings. The authors concluded that well-designed RCTs with larger sample sizes are needed to establish a definitive relationship.
View on PubMedHausenblas HA, Hooper S, Engelen MPKJ.
Randomized controlled trial of 80 adults aged 35–55 taking 1g/day of magnesium L-threonate for 21 days. Significant improvements were observed in deep sleep, REM sleep, readiness scores, and daytime functioning compared to placebo.
View on PubMedLopresti AL, Smith SJ.
Randomized controlled trial of 100 adults aged 18–45 taking 2g daily for 6 weeks. Participants showed improved hand-eye coordination, reaction time, and subjective sleep quality. The study also observed reduced resting heart rate and increased heart rate variability during sleep.
View on PubMedSchuster J, et al.
The first randomized controlled trial examining magnesium glycinate/bisglycinate specifically for sleep. 155 adults received 250mg elemental magnesium daily. Significant reduction in Insomnia Severity Index scores versus placebo was observed at Week 4. The supplement was well tolerated with minimal side effects.
View on PubMed