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    The influence of preseason training phase and training load on body composition and its relationship with physical qualities in professional junior rugby league players

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    Authors
    Dobbin, Nick
    Gardner, Adrian
    Daniels, Matthew
    Twist, Craig
    Affiliation
    University of Chester
    Publication Date
    2018-05-08
    
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    Abstract
    This study investigated changes in body composition in relation to training load determined using RPE and duration (sRPE), and its relationship with physical qualities over a preseason period. Sixteen professional academy players (age = 17.2 ± 0.7 years; stature = 179.9 ± 4.9 cm; body mass = 88.5 ± 10.1 kg) participated in the study. Body composition was assessed before and after each training phase and physical qualities assessed at the start and end of preseason. Across the whole preseason period, skinfold thickness, body fat percentage and fat mass were most likely lower (ES = -0.73 to -1.00), and fat free mass and lean mass were likely to most likely higher (ES = 0.31 to 0.40). Results indicated that the magnitude of change appeared phase-dependent (ES = -0.05 to -0.85) and demonstrated large individual variability. Changes in physical qualities ranged from unclear to most likely (ES = -0.50 to 0.64). Small to moderate correlations were observed between changes in body composition, and TL with changes in physical qualities. This study suggests training phase and TL can influence a player’s body composition; that large inter-participant variability exists; and that body composition and TL are related to the change in physical qualities.
    Citation
    Dobbin, N., Gardener, A., Daniels, M., Twist, C. (2018). The influence of preseason training phase and training load on body composition and its relationship with physical qualities in professional junior rugby league players. Journal of Sports Sciences, 36(24), 2778-2786.
    Publisher
    Taylor & Francis
    Journal
    Journal of Sports Sciences
    URI
    http://hdl.handle.net/10034/621125
    DOI
    10.1080/02640414.2018.1473993
    Additional Links
    https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1473993
    Type
    Article
    Language
    en
    Description
    This is an Accepted Manuscript of an article published by Taylor & Francis in Journal of Sports Sciences on 08/05/2018, available online: https://www.tandfonline.com/doi/full/10.1080/02640414.2018.1473993
    EISSN
    1466-447X
    ae974a485f413a2113503eed53cd6c53
    10.1080/02640414.2018.1473993
    Scopus Count
    Collections
    Sport and Exercise Sciences

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