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August 1, 2000International Journal of Sports Medicine

Anabolic steroids combined with exercise impaired exercise-induced increases in cardiac capillary density at 6 weeks (4,076 vs 5,411 capillaries/mm2 for exercise alone; p<0.05).

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Why the study?

Does the combination of anabolic steroids and exercise impair cardiac microvascular adaptation compared to exercise alone in mice?

Population

Female SPF-NMRI mice

Comparison

Anabolic steroids combined with exercise or… vs Sedentary control and exercise alone

Design

Preclinical

Follow-up

3 and 6 weeks

Key result

Anabolic steroids combined with exercise impaired exercise-induced increases in cardiac capillary density at 6 weeks (4,076 vs 5,411 capillaries/mm2 for exercise alone; p<0.05).

Authors

CTC. V. M. TagarakisKBKonrad E. BlochCHCh. Hartmann

Discussion

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Overview

May compromise myocardial perfusion in steroid-using athletes; hypothesis-generating from animal data and requires human validation.

Structured PICO

Does the combination of anabolic steroids and exercise impair cardiac microvascular adaptation compared to exercise alone in mice?

P
Population
Female SPF-NMRI mice evaluated after 3 and 6 weeks of exercise and/or anabolic steroid administration.
I
Intervention
Anabolic steroids (Dianabol or Oral-Turinabol) combined with exercise (treadmill running) or Dianabol alone for 3 and 6 weeks
C
Comparator
Sedentary control and exercise alone
O
Outcome
Morphometric variables of left ventricular papillary muscles (minimal myocyte diameter, number of capillaries around a single myocyte, capillary density and intercapillary distance)surrogate

Main Result

Absolute Event Rate: 4076% vs 5411%

p-value: p=< 0.05

Anabolic steroids combined with exercise induce mild cardiac myocyte hypertrophy but impair exercise-induced microvascular adaptation, potentially compromising myocardial oxygen supply.

Cite This Study

Tagarakis et al. (2000) studied this question. Anabolic steroids (Dianabol or Oral-Turinabol) + exercise vs. Exercise alone or sedentary control was evaluated on Capillary density at 6 weeks (capillaries/mm2) (p=< 0.05). Anabolic steroids combined with exercise impaired exercise-induced increases in cardiac capillary density at 6 weeks (4,076 vs 5,411 capillaries/mm2 for exercise alone; p<0.05).

synapsesocial.com/papers/6a96e5efd6c1344eaca6bcf9https://doi.org/10.1055/s-2000-3835
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Effects of Anabolic Steroids and Endurance Exercise on Cardiac Performance1993 · 20 citations
  2. 2Doping and effects of anabolic androgenic steroids on the heart: histological, ultrastructural, and echocardiographic assessment in strength athletes2009 · 72 citations
  3. 3The Effects of High Doses of Nandrolone Decanoate on Cardiac Muscle Tissue2016 · 13 citations
  4. 4Anabolic steroids induce cardiac renin-angiotensin system and impair the beneficial effects of aerobic training in rats2007 · 123 citations
  5. 5Effects of an androgenic steroid on exercise-induced cardiac remodeling in rats2000 · 42 citations