SOURCE-LINKED STUDY SUMMARY
Muscle ultrastructure after strength training with placebo or anabolic steroid.
Abstract summarizedQuality not appraised
- What was studied
- A double-blind, counterbalanced study examined muscle-fibre size and small blood-vessel structure and supply during strength training with nandrolone or placebo.
- Who / model studied
- 13 experienced male bodybuilders participated. Thigh-muscle biopsies before and after eight weeks assessed muscle-fibre and capillary characteristics.
- Studied dose & schedule
- Weekly injections contained placebo or nandrolone decanoate, beginning with 200 mg and followed by 100 mg weekly over eight weeks. The abstract does not specify the injection route.
- What the study found
- Fibre area increased significantly only within the steroid condition, but no measured outcome differed between steroid and placebo treatments. Capillary structure and supply did not change. The within-condition increase therefore did not demonstrate superiority over placebo.
- Limitations & context
- Study limitations were not stated in the abstract. Methodological quality has not been appraised.
Read summary source ↗ · Prepared 9/24/2026 · 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: 10.1139/h93-015