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Effects of simultaneous aerobic and inspiratory muscle training on diaphragm function, respiratory muscle strength, endurance, and fatigue index: randomized-controlled trial.

PMID 40601012 (2025): inspiratory muscle training, respiratory — Time to exhaustion (study note for endurance athletes).

Last updated/Feb 23, 2026, 10:34 PM

Study note • PMID 40601012

Effects of simultaneous aerobic and inspiratory muscle training on diaphragm function, respiratory muscle strength, endurance, and fatigue index: randomized-controlled trial.

European journal of applied physiology2025 • DOI 10.1007/s00421-025-05868-1
Evidence C67/100
Action 2: Consider

Worth trying if it fits your goal and context.

ELI5

In plain language

This study aims to investigate the effects of Walking-Specific Inspiratory Muscle Training (W-SIMT) on diaphragm thickness-stiffness, pulmonary and respiratory muscle functions, and fatigue index. (randomized trial; n=14 participants).

The abstract suggests a positive effect on 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: This study aims to investigate the effects of Walking-Specific Inspiratory Muscle Training (W-SIMT) on diaphragm thickness-stiffness, pulmonary and respiratory muscle functions, and fatigue index.
  • The abstract suggests a positive effect on Time to exhaustion under the tested conditions.
  • Population: n=14 participants.
  • Protocol cues (title/abstract): 3 days • 4 weeks.

Protocol

Protocol (as reported)

  • Intervention/exposure: inspiratory muscle training, respiratory.
  • Dose/time/duration cues in abstract/title: 3 days • 4 weeks.
  • 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 (n=14 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: randomized trial.
  • Population: n=14 participants.
  • Outcomes measured: Time to exhaustion.
  • Protocol cues mentioned: 3 days • 4 weeks.
  • Source: PubMed PMID 40601012 (2025) — European journal of applied physiology.

Results excerpt

What the abstract reports

Further studies are needed to explore the long-term effects of W-SIMT.

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