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    Title: High-protein supplementation facilitates weight traininginduced bone mineralization in baseball players
    Authors: Chu, Chen-Wei;Chung, Chen-Wei;Chang-Hung, K;Kuo, Chang-Hung;Huang, Hui-Yu;Huang, Hui-Yu;Alkhat, Ahmad;Alkhatib, Ahmad;Tse, Ching-Yu;Tseng, Ching-Yu;黃志揚;Huang, Chih-Yang;Kuo, Chia-Hua;Kuo, Chia-Hua
    Contributors: 醫學檢驗暨生物技術學系
    Keywords: BMD;Baseball;Resistance exercise;Whey protein hydrolysate;iDXA.
    Date: 2020-01
    Issue Date: 2020-10-15 14:23:52 (UTC+8)
    Publisher: 亞洲大學
    Abstract: Objectives: The aim of this study was to determine whether weight training combined with high-protein intake enhances total and regional bone mineral density (BMD) in athletes.

    Methods: BMD of 27 Division 1 collegiate baseball players 18 to 22 y of age (N = 13, 2 dropouts) received either 14% protein or isocaloric 44% protein supplements and were assessed by dual-energy x-ray absorptiometry before and after a 12-wk weight training program (challenging upper and lower body).

    Results: Baseline data showed unequivocally greater humerus BMD in the dominant arm than their contralateral non-dominant arm (∼20 %) among all baseball players. Humerus BMD of the non-dominant arm was enhanced by 2.7% after weight training for both low- and high-protein groups (main effect, P = 0.008), concurrent with an unexpected small decrease in total body BMD (main effect, P = 0.014). Humerus BMD of the dominant arm with greater baseline value than the non-dominant arm was not increased unless high protein was supplemented (+2.7 %; P < 0.05).

    Conclusion: Bones with relatively higher BMD show blunt adaptation against training, which can be relieved by high-protein supplementation. Total BMD of athletes cannot be further elevated by weight training.
    Appears in Collections:[Department of Medical Laboratory Science and Biotechnology] Journal Article

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