Volume 53, Issue 6 pp. 951-957
Basic & Translational Research

Effect of resistance ladder training on sparc expression in skeletal muscle of hindlimb immobilized rats

Jun Seok Son BS

Jun Seok Son BS

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

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Jang Hoe Kim MS

Jang Hoe Kim MS

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

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Hee-Jae Kim MS

Hee-Jae Kim MS

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

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Dong Hyun Yoon MS

Dong Hyun Yoon MS

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

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Jin-Soo Kim MS

Jin-Soo Kim MS

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

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Han Sol Song BS

Han Sol Song BS

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

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Wook Song PhD

Corresponding Author

Wook Song PhD

Health and Exercise Science Laboratory, Institute of Sport Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea

Institute on Aging, Seoul National University, Seoul, Korea

Correspondence to: W. Song; e-mail: [email protected]Search for more papers by this author
First published: 15 October 2015
Citations: 10

ABSTRACT

Introduction

Secreted protein acidic and rich in cysteine (SPARC) is associated with skeletal muscle atrophy. Here we examined possibility that resistance training could regulate SPARC expression in muscle atrophy in an immobilized hindlimb model.

Methods

Sprague-Dawley rats underwent resistance ladder training and hindlimb immobilization. Cross sectional area and grip strength were measured. SPARC protein levels in the plantaris and soleus, and serum after exercise and immobilization were then analyzed.

Results

Resistance training decreased body weight (P < 0.001) and increased muscle quality (P < 0.001). In the plantaris, muscle atrophy (31.82%) and up-regulated SPARC expression (P < 0.05) after immobilization were alleviated by resistance training.

Conclusions

Resistance training led to suppression of SPARC expression in the plantaris and showed a pretraining effect in atrophied rat muscle. Thus, SPARC may play a pivotal role in muscle homeostasis. Muscle Nerve 53: 951–957, 2016

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