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Updated: Mar 1, 2026

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Resistance training improves aortic structure in Wistar rats.

Romeu R Souza1, Elias de França1, Diana Madureira1

  • 1Setor de Pós-Graduação em Educação Física, Universidade São Judas Tadeu (USJT), São Paulo, SP, Brazil.

Brazilian Journal of Physical Therapy
|June 7, 2017
PubMed
Summary

Resistance training in rats led to significant aortic wall thickening, increased collagen, and elastic lamina. This indicates that resistance exercise positively impacts aortic structure, distinct from pathological changes.

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Area of Science:

  • Physiology
  • Cardiovascular Research
  • Exercise Science

Background:

  • Limited data exists on resistance training's impact on the aortic wall.
  • Understanding these effects is crucial for cardiovascular health assessment.

Purpose of the Study:

  • To investigate the effects of a structured resistance training program on blood pressure.
  • To quantify changes in aortic wall structural components following resistance exercise.

Main Methods:

  • Rats were divided into a sedentary control group (CG) and a resistance-trained group (TG).
  • The TG performed ladder climbing exercise for 12 weeks.
  • Aortic tissue was analyzed using histological staining and morphometric analysis; left ventricle (LV) hypertrophy was assessed.
Keywords:
Anaerobic trainingGreat vesselsMorphometryMovement

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Main Results:

  • Resistance training significantly increased aortic wall thickness, elastic lamina, and collagen fiber content.
  • The trained group exhibited concentric cardiac hypertrophy, with increased LV weight and reduced LV internal diameter.
  • Repetition maximum performance increased significantly in the trained group.

Conclusions:

  • Resistance training promotes beneficial adaptations in aortic wall structure.
  • These adaptations contribute to cardiac hypertrophy, distinct from pathological remodeling.
  • Resistance exercise offers a protective effect on the aorta.