Assessment of body composition in junior representative and first grade rugby league players using dual x-ray absorptiometry

Greene, David A. and Varley, Benjamin and Duncan, Craig S. and Gabbett, Tim J. (2017) Assessment of body composition in junior representative and first grade rugby league players using dual x-ray absorptiometry. Science and Medicine in Football, 1 (3). pp. 197-202. ISSN 2473-3938

Abstract

Objectives: Body composition is important to rugby league coaches because, in concert with other factors such as muscle and tendon properties and neurophysiology, composition values provide a general indication of strength and power and an ability to absorb high impacts. We compared whole-body and regional body composition values of junior representative (under 16 years, 18 years) and senior professional (1st grade) National Rugby league (NRL) players using Dual X-ray Absorptiometry (DXA).

Methods: One hundred and forty-two junior representative and senior 1st grade rugby league players completed a whole-body DXA scan. Juniors comprised U/16 (mean age 15.9 ± 0.8 years, n = 25), and U/18 (17.9 ± 0.6 years, n = 21) state-level representative players while 1st grade players (25.3 ± 2.3 years, n = 96) were drawn from three NRL clubs.

Results: Junior representative players were lighter in body mass and shorter in stature compared to 1st grade players. Despite greater lean tissue mass (LTM) in 1st grade players, there were no between-group differences in fat mass (FM) at whole-body or regional sites.

Conclusions: When comparing body composition values between junior representative players to 1st grade players’ results show that senior players have greater LTM but do not differ in FM relative to junior players. Findings suggest that junior training programs should emphasise developmentally-appropriate resistance training with a continuation of current practices to maintain FM.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Resilient Regions
Faculty/School / Institute/Centre: Current - Institute for Resilient Regions
Date Deposited: 04 Sep 2019 03:43
Last Modified: 18 Sep 2019 05:32
Uncontrolled Keywords: DXA, body composition, Rugby League
Fields of Research : 11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110699 Human Movement and Sports Science not elsewhere classified
Identification Number or DOI: 10.1080/24733938.2017.1331043
URI: http://eprints.usq.edu.au/id/eprint/36406

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