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最終更新日：2024/04/01

安田純

ヤスダジュン (Jun Yasuda)

論文

タイトル
タイトル（英）: Evenly distributed protein intake over 3 meals augments resistance exercise-induced muscle hypertrophy in healthy young men.
参照URL: https://researchmap.jp/junken/published_papers/26736503
著者
著者（英）: Jun Yasuda,Toshiki Tomita,Takuma Arimitsu,Satoshi Fujita
担当区分: 筆頭著者
概要
概要（英）: BACKGROUND: Although daily protein intake (PI) has been reported to be essential for regulating muscle mass, the distribution of daily PI in individuals is typically the lowest at breakfast and skewed toward dinner. Skewed protein intake patterns and inadequate PI at breakfast were reported to be negative factors for muscle maintenance. OBJECTIVES: This study examined whether a protein-enriched meal at breakfast is more effective for muscle accretion compared with the typical skewed PI pattern. METHODS: This 12-wk, parallel-group, randomized clinical trial included 26 men (means ± SEs; age: 20.8 ± 0.4 y; BMI: 21.8 ± 0.4 kg/m2). The "high breakfast" (HBR) group (n = 12) consumed a protein-enriched meal at breakfast providing a PI of 0.33 g/kg body weight (BW); their PI at lunch (0.46 g/kg BW) and dinner (0.48 g/kg BW) provided an adequate overall daily PI (1.30 g/kg BW/d). The "low breakfast" (LBR) group (n = 14) consumed 0.12 g protein/kg BW at breakfast; intakes at lunch (0.45 g/kg BW) and dinner (0.83 g/kg BW) yielded the same daily PI as in the HBR group. The participants performed supervised resistance training (RT) 3 times per week (75-80% 1-repetition maximum; 3 sets × 10 repetitions). DXA was used to measure the primary outcome variable, that is, total lean soft tissue mass (LTM). RESULTS: The total LTM at baseline did not differ between the HBR (52.4 ± 1.3 kg) and LBR (53.4 ± 1.2 kg) groups. After the intervention, increases in total LTM were significant in both groups, with that in the HBR group (2.5 ± 0.3 kg) tending to be greater than that in the LBR group (1.8 ± 0.3 kg) (P = 0.06), with a large effect size (Cohen d = 0.795). CONCLUSIONS: For RT-induced muscle hypertrophy in healthy young men, consuming a protein-enriched meal at breakfast and less protein at dinner while achieving an adequate overall PI is more effective than consuming more protein at dinner.This study was registered at University hospital Medical Information Network (UMIN) Clinical Trials Registry as UMIN000037583 (https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000042763).
出版者・発行元
出版者・発行元（英）: American Society for Nutritional Sciences
誌名
誌名（英）: The Journal of Nutrition
巻: 150
号: 7
開始ページ: 1845
終了ページ: 1851
出版年月: 2020年7月1日
査読の有無: 査読有り
招待の有無
掲載種別: 研究論文（学術雑誌）
ISSN
DOI URL: https://doi.org/10.1093/jn/nxaa101
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