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Study note

Inspiratory muscle training combined with general exercise reconditioning in patients with COPD.

PMID 1424850 (1992): inspiratory muscle training — Time to exhaustion (study note for endurance athletes).

Updated Feb 23, 2026

Read the study note

Study note • PMID 1424850

Inspiratory muscle training combined with general exercise reconditioning in patients with COPD.

Chest1992 • DOI 10.1378/chest.102.5.1351

How to use this page

This note summarizes one study record. Check the participants, methods, results, and limitations before applying it to training.

  • Design signal: randomized trial.
  • Population relevance: mixed/unclear athlete specificity.
  • Consistency: single-study evidence.
  • Practical recommendation depends on tolerance, context, and whether it protects training consistency.

ELI5

In plain language

We compared, in a controlled clinical trial, the effect of specific inspiratory muscle training combined with general exercise reconditioning, for six months, with that of general exercise reconditioning alone… (randomized trial; 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: We compared, in a controlled clinical trial, the effect of specific inspiratory muscle training combined with general exercise reconditioning, for six months, with that of general exercise reconditioning alone…
  • The abstract suggests a positive effect on Time to exhaustion under the tested conditions.
  • Population: participants.
  • Protocol cues: abstract may omit dose/timing; use the full paper to replicate accurately.

Protocol

Protocol (as reported)

  • Intervention/exposure: inspiratory muscle training.
  • Dose/time/duration: abstract doesn’t include enough detail; use the full paper’s methods section.
  • Outcomes: Time to exhaustion.
  • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.

Fit

Who it may help, and who should be cautious

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 be cautious

  • 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: participants.
  • Outcomes measured: Time to exhaustion.
  • Source: PubMed PMID 1424850 (1992) — Chest.

Results excerpt

What the abstract reports

We compared, in a controlled clinical trial, the effect of specific inspiratory muscle training combined with general exercise reconditioning, for six months, with that of general exercise reconditioning alone on inspiratory muscle strength, endurance, and exercise performance in patients with COPD.

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

Limits

Limitations and 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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