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Nutritional Modulation of Sleep Latency, Duration, and Efficiency: A Randomized, Repeated-Measures, Double-Blind
Carl Langan-Evans1, Mark A Hearris1, Chloe Gallagher1
1Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UNITED KINGDOM.
Medicine and Science in Sports and Exercise
|September 12, 2022
Summary
This study found that a nutritional blend improved sleep quality and duration. The blend reduced time to fall asleep and increased total sleep time, leading to less morning sleepiness.
Area of Science:
- Nutritional Science
- Sleep Medicine
- Metabolomics
Background:
- Sleep disturbances are prevalent and impact overall health.
- Nutritional interventions are increasingly explored for sleep enhancement.
- Understanding the metabolic pathways of sleep regulation is crucial.
Purpose of the Study:
- To evaluate a novel nutritional blend for improving sleep.
- To assess subjective and objective sleep measures under free-living conditions.
- To investigate the metabolomic changes associated with the nutritional intervention.
Main Methods:
- Randomized, repeated-measures crossover, double-blind placebo-controlled design.
- Participants (n=16) received a 3-day intervention or placebo.
- Sleep was assessed using subjective (questionnaires) and objective (actigraphy) methods.
- Urine samples were analyzed for metabolomic profiling.
Main Results:
- The nutritional blend significantly reduced sleep onset latency and increased total sleep time and sleep efficiency.
- Participants reported reduced morning sleepiness.
- Metabolomic analysis revealed alterations in metabolites like 6-sulfatoxymelatonin, d-serine, and l-glutamic acid.
Conclusions:
- The novel nutritional blend effectively improved sleep onset, duration, and efficiency in free-living conditions.
- The blend may enhance sleep by modulating key metabolites in the sleep/wake cycle.
- Further research into the specific mechanisms is warranted.
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