The influence of low-intensity resistance training versus high-intensity resistance training on left ventricular structure and function of healthy adolescent boys using Echocardiography

Kianzadeh , asghar; Peeri , maghsood; Azarbayjani , mohammad ali; Hasanvand , bahman; Bahrami , farid; Omidi , hosein

Volume 15, Issue 1 (5-2013) yafte 2013, 15(1): 93-104 | Back to browse issues page

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Kianzadeh A, Peeri M, Azarbayjani M A, Hasanvand B, Bahrami F, Omidi H. The influence of low-intensity resistance training versus high-intensity resistance training on left ventricular structure and function of healthy adolescent boys using Echocardiography. yafte 2013; 15 (1) :93-104
URL: http://yafte.lums.ac.ir/article-1-1193-en.html

The influence of low-intensity resistance training versus high-intensity resistance training on left ventricular structure and function of healthy adolescent boys using Echocardiography

Asghar Kianzadeh ^*

, Maghsood Peeri

, Mohammad ali Azarbayjani

, Bahman Hasanvand

, Farid Bahrami

, Hosein Omidi

Faculty of Physical Education and Sport Sciences

Abstract: (9282 Views)

Background: The study on the influence of different protocol of resistance training on left ventricular of adolescent boys dose have its limitation. The aim of this study was to determine the influence of low-intensity resistance training versus high-intensity resistance training on left ventricular structure and function of healthy adolescent boys by echocardiography. Materials and Methods: Twenty-four subjects volunteers, 15 to 18 years old were randomly assigned to three groups in the eight-member low-intensity resistance training (40% to 60% maximum strength), high-intensity resistance training (70% to 90% maximum strength) and control group. Protocol training was conducted 8 weeks, 3 sessions. Variables were measured using one and two-dimensional echocardiography at rest and special formulas. Results: In the post-test to pre-test, in low-intensity resistance training group means values, left ventricular posterior wall thickness at end-systole (P=0.028) and resting heart rate (P=0.017) showed significant increase and decrease respectively. In post-test, it was shown a significant increase means values left ventricular posterior wall thickness at end-systole and left ventricular mass index in low-intensity resistance training group than high-intensity resistance training group (P=0.007 and P=0.005 respectively) and control group (P=0.005 and P=0.0015 respectively) and mean value left ventricular mass in low-intensity resistance training group than high-intensity resistance training group (P<0.007). Conclusion: Low-intensity resistance training than high-intensity resistance training in healthy adolescent boys caused some changes in left ventricular structure and function, probably these changes were associated with increased volume and pressure load.

Keywords: Resistance training, Left ventricular, Adolescent.

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Type of Study: Research |
Received: 2013/05/12 | Accepted: 2013/05/20 | Published: 2013/05/20