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Functional training of the inspiratory muscles improves load carriage performance.

PMID 31389759 (2019): inspiratory muscle training, breathing — Time to exhaustion (study note for endurance athletes).

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

Study note • PMID 31389759

Functional training of the inspiratory muscles improves load carriage performance.

Ergonomics2019 • DOI 10.1080/00140139.2019.1652352
Evidence C56/100
Action 2: Consider

Worth trying if it fits your goal and context.

ELI5

In plain language

Inspiratory Muscle Training (IMT) whilst adopting body positions that mimic exercise (functional IMT; IMT(F)) improves running performance above traditional IMT methods in unloaded exercise. (controlled study; participants).

The abstract doesn’t indicate a clear change in Time to exhaustion 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: Inspiratory Muscle Training (IMT) whilst adopting body positions that mimic exercise (functional IMT; IMT(F)) improves running performance above traditional IMT methods in unloaded exercise.
  • The abstract doesn’t indicate a clear change in Time to exhaustion under the tested conditions.
  • Population: participants.
  • Protocol cues (title/abstract): 4 weeks • 60 min • 2.30 min • 2.40 min • 0.83 min • 2.33 min.

Protocol

Protocol (as reported)

  • Intervention/exposure: inspiratory muscle training, breathing.
  • Dose/time/duration cues in abstract/title: 4 weeks • 60 min • 2.30 min • 2.40 min • 0.83 min • 2.33 min • 5 km • 4 km.
  • Outcomes: Time to exhaustion.
  • 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 (participants) working on breathing.
  • Athletes who can measure Time to exhaustion 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: participants.
  • Outcomes measured: Time to exhaustion.
  • Protocol cues mentioned: 4 weeks • 60 min • 2.30 min • 2.40 min • 0.83 min • 2.33 min • 5 km • 4 km.
  • Source: PubMed PMID 31389759 (2019) — Ergonomics.

Results excerpt

What the abstract reports

Following phase two, LC(TT) increased in IMT(F) only (13.59 +/- 2.33 min, p < 0.05) and was unchanged in post-IMT(CON).

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