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A Delayed Evening Meal Enhances Sleep Quality in Young Rugby Players.

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Eating dinner 1.5 hours before bed improved sleep quality in young athletes. This late dinner (LD) condition increased total sleep time and sleep efficiency compared to a routine dinner 3.5 hours before bed.

Keywords:
adolescent athletechrononutritiondinnertimepolysomnographysleep efficiency

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Area of Science:

  • Sports Science
  • Sleep Medicine
  • Nutritional Science

Background:

  • Sleep quality is crucial for athletic performance and recovery in adolescent athletes.
  • The timing of evening meals, relative to bedtime, may influence sleep patterns.
  • Understanding optimal meal timing can inform strategies for enhancing athlete well-being.

Purpose of the Study:

  • To investigate the impact of delayed evening meal timing on objective sleep quality in young athletes.
  • To compare sleep parameters between a late dinner (1.5 hours before bedtime) and a routine dinner (3.5 hours before bedtime) condition.

Main Methods:

  • A crossover within-participant design was used with 12 adolescent rugby players.
  • Participants completed five consecutive days in each dinner timing condition, with a 2-week washout period.
  • Sleep was objectively measured using polysomnography on the first and last nights of each condition.

Main Results:

  • Late dinner (LD) significantly increased total sleep time by 24 minutes and sleep efficiency by 4.8% compared to routine dinner.
  • LD reduced wake after sleep onset, microarousals, and prolonged awakenings, indicating less fragmented sleep.
  • A shorter latency to slow-wave sleep (N3) was observed during the LD condition.

Conclusions:

  • Consuming dinner 1.5 hours before bedtime enhances sleep quality and reduces sleep fragmentation in young athletes compared to dinner 3.5 hours before bedtime.
  • Delayed evening meal timing appears to be a beneficial strategy for improving sleep in adolescent athletes.
  • These findings suggest that optimizing meal timing could be an important factor in athlete recovery and performance.