High-protein supplementation facilitates weight training–induced bone mineralization in baseball players

Chen Wei Chung, Chang Hung Kuo, Hui Yu Huang, Ahmad Alkhatib, Ching Yu Tseng, Chih Yang Huang, Chia Hua Kuo

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.

Original languageEnglish
Article number110760
JournalNutrition
Volume75-76
DOIs
Publication statusPublished - Jul 1 2020

Keywords

  • Baseball
  • BMD
  • iDXA
  • Resistance exercise
  • Whey protein hydrolysate

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

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