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Cells 2018, 7(12), 251; https://doi.org/10.3390/cells7120251

Tendon Remodeling in Response to Resistance Training, Anabolic Androgenic Steroids and Aging

1
Departamento de Biologia Molecular e Celular, Universidade Federal da Paraíba, João Pessoa 58051-970, Paraíba, Brazil
2
Department of Physiological Sciences, Federal University of São Carlos, São Carlos 13565-205, São Paulo, Brazil
3
Graduate Program of Rehabilitation Science, University of Brasilia, Distrito Federal, Brasília 70840-901, Distrito Federal, Brazil
*
Author to whom correspondence should be addressed.
Received: 16 November 2018 / Revised: 30 November 2018 / Accepted: 30 November 2018 / Published: 7 December 2018
(This article belongs to the Special Issue Extracellular Matrix Remodeling)
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Abstract

Exercise training (ET), anabolic androgenic steroids (AAS), and aging are potential factors that affect tendon homeostasis, particularly extracellular matrix (ECM) remodeling. The goal of this review is to aggregate findings regarding the effects of resistance training (RT), AAS, and aging on tendon homeostasis. Data were gathered from our studies regarding the impact of RT, AAS, and aging on the calcaneal tendon (CT) of rats. We demonstrated a series of detrimental effects of AAS and aging on functional and biomechanical parameters, including the volume density of blood vessel cells, adipose tissue cells, tendon calcification, collagen content, the regulation of the major proteins related to the metabolic/development processes of tendons, and ECM remodeling. Conversely, RT seems to mitigate age-related tendon dysfunction. Our results suggest that AAS combined with high-intensity RT exert harmful effects on ECM remodeling, and also instigate molecular and biomechanical adaptations in the CT. Moreover, we provide further information regarding the harmful effects of AAS on tendons at a transcriptional level, and demonstrate the beneficial effects of RT against the age-induced tendon adaptations of rats. Our studies might contribute in terms of clinical approaches in favor of the benefits of ET against tendinopathy conditions, and provide a warning on the harmful effects of the misuse of AAS on tendon development. View Full-Text
Keywords: tendon; resistance training; anabolic androgenic steroids; aging; extracellular matrix tendon; resistance training; anabolic androgenic steroids; aging; extracellular matrix
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Guzzoni, V.; Selistre-de-Araújo, H.S.; de Cássia Marqueti, R. Tendon Remodeling in Response to Resistance Training, Anabolic Androgenic Steroids and Aging. Cells 2018, 7, 251.

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