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Increased training load promotes sleep propensity and slow-wave sleep in endurance runners: Can a high-heat-capacity mattress topper modulate this effect?

PMID 38148606 (2024): taper — Time-trial performance (study note for endurance athletes).

Last updated/Feb 23, 2026, 11:13 PM

Study note • PMID 38148606

Increased training load promotes sleep propensity and slow-wave sleep in endurance runners: Can a high-heat-capacity mattress topper modulate this effect?

Journal of sleep research2024 • DOI 10.1111/jsr.14132
Evidence C58/100
Action 2: Consider

Worth trying if it fits your goal and context.

ELI5

In plain language

The present study aimed to: (1) investigate sleep architecture in response to an overload training and taper periods among endurance runners; and (2) assess the sleep benefits of a… (controlled study; n=11 trained runners).

The abstract doesn’t indicate a clear change in Time-trial performance under the tested conditions. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.

Takeaways

What the abstract suggests

  • Study question: The present study aimed to: (1) investigate sleep architecture in response to an overload training and taper periods among endurance runners; and (2) assess the sleep benefits of a…
  • The abstract doesn’t indicate a clear change in Time-trial performance under the tested conditions.
  • Population: n=11 trained runners.
  • Protocol cues (title/abstract): 5 min • 0.49 min.

Protocol

Protocol (as reported)

  • Intervention/exposure: taper (vs comparison group).
  • Dose/time/duration cues in abstract/title: 5 min • 0.49 min.
  • Outcomes: Time-trial performance.
  • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.

Fit

Who it helps, and who should skip it

Who it helps

  • Athletes similar to the study population (n=11 trained runners) working on tapering.
  • Athletes who can measure Time-trial performance with a repeatable workout or time-trial effort.

Who should skip

  • If you have symptoms or conditions that make the intervention risky, get professional guidance.
  • If you’re near race day and can’t safely test, defer the experiment.

Methods

What the study actually did

  • Design: controlled study.
  • Population: n=11 trained runners.
  • Comparator: comparison group.
  • Outcomes measured: Time-trial performance.
  • Protocol cues mentioned: 5 min • 0.49 min.
  • Source: PubMed PMID 38148606 (2024) — Journal of sleep research.

Results excerpt

What the abstract reports

Irrespective of the group, awakening episodes > 5 min decreased following overload compared with baseline (-0.48, p = 0.05).

Note: excerpts are short; for full context, read the paper.

Limits

Limitations & bias

  • Abstract-only summaries can miss critical details (population, protocol, adherence, and context).
  • Single studies often don’t generalize to your event, history, and training load; treat results as a starting point.
  • If your context differs (elite vs recreational; cycling vs running), adjust expectations and be conservative.
  • This is performance information, not medical advice.

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Sources