SOURCE-LINKED STUDY SUMMARY
Concurrent training with long-interval HIIT does not impair skeletal muscle protein synthesis or hypertrophy: little evidence of an "interference effect".
Abstract summarizedQuality not appraised
- What was studied
- A randomized trial compared resistance training with resistance training plus long-interval HIIT.
- Who / model studied
- Nineteen previously untrained young men.
- Studied dose & schedule
- Concurrent or resistance training for 16 weeks; muscle biopsies sampled exercise responses during training.
- What the study found
- Both groups increased type II muscle-fiber size, with no between-group difference in measured protein synthesis. Resistance-only training produced greater strength gains; aerobic capacity improved only with concurrent training.
- Limitations & context
- Small novice-male sample. Preserved muscle growth does not mean every adaptation was equivalent. Abstract-based assessment; detailed exercise prescription and adverse events were not reported there.
Read summary source ↗ · Prepared 10/15/2026 · AI-assisted, source-based summary
Review record & corrections
Summary prepared: . Source scope: abstract. This is an AI-assisted source summary, not an independent clinician sign-off.
No public field-by-field revision history is available for this card yet. The date above is the summary date, not proof that every field was updated then.
Inspect the source · Correction policyResearch findings apply to the population and conditions studied. This educational summary is not a treatment recommendation or a formal assessment of study quality.
Original publication ↗ · DOI: 10.1152/japplphysiol.00642.2025