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Significant Changes in Resting Metabolic Rate Over a Competitive Match Week Are Accompanied by an Absence of Nutritional Periodization in Male Professional Soccer Players
International Journal of Sport Nutrition and Exercise Metabolism ( IF 2.5 ) Pub Date : 2023-09-21 , DOI: 10.1123/ijsnem.2023-0069
Jennie L Carter 1 , David J Lee 1 , Craig G Perrin 1 , Mayur K Ranchordas 2 , Matthew Cole 1
Affiliation  

Resting metabolic rate (RMR) is an important component of total daily energy expenditure; however, it is currently not understood how it varies across a typical competitive match week in professional soccer players. For the first time, we aimed to assess RMR throughout an in-season competitive week in professional soccer players. Additionally, we aimed to assess energy and carbohydrate intake across the same week. Twenty-four professional soccer players from an English Premier League club (age: 18 ± 1.6 years) completed the study. RMR was assessed each morning of a typical competitive match week (match day [MD] −3, −2, −1, +1, +2, and + 3), and dietary intake (including MD) was assessed daily via the remote food photography method and 24-hr recall. Daily training load was quantified using Global Positioning System, daily muscle soreness ratings were recorded, and body composition was assessed via dual-energy X-ray absorptiometry. There was a significant (p = .0004) increase in mean RMR of ∼261 kcal/day on MD + 1, compared with MD − 1. Additionally, volume of oxygen consumed significantly increased at MD + 1 (p = .0002) versus MD − 1. There were no significant differences in daily energy or carbohydrate intake across the competitive week (p > .05), with inadequate carbohydrate intakes on MD − 1 (∼3.9 g/kg body mass), MD (∼4.2 g/kg body mass), and MD + 1 (∼3.6 g/kg body mass) in relation to current recommendations. We report, for the first time, that RMR is significantly increased following a competitive match in professional soccer players. In addition, we confirm previous findings to reinforce that players exhibit inadequate nutrition periodization practices, which may impair physical performance and recovery.



中文翻译:

男性职业足球运动员在比赛周内静息代谢率发生显着变化,同时缺乏营养周期

静息代谢率(RMR)是每日总能量消耗的重要组成部分;然而,目前尚不清楚职业足球运动员在典型的竞技比赛周中它有何变化。我们首次旨在评估职业足球运动员整个赛季的 RMR。此外,我们的目标是评估同一周的能量和碳水化合物摄入量。来自英超俱乐部的 24 名职业足球运动员(年龄:18 ± 1.6 岁)完成了这项研究。在典型的竞技比赛周(比赛日 [MD] -3、-2、-1、+1、+2 和 + 3)的每天早上评估 RMR,每天通过远程评估饮食摄入量(包括 MD)。食物摄影方法和24小时回忆。使用全球定位系统量化每日训练负荷,记录每日肌肉酸痛等级,并通过双能 X 射线吸收测定法评估身体成分。 与 MD − 1 相比,MD + 1 的平均 RMR 显着增加( p = .0004) ∼261 kcal/天。此外,MD + 1 时的耗氧量显着增加 ( p  = .0002)。 MD − 1。整个比赛周中每日能量或碳水化合物摄入量没有显着差异 ( p  > .05),MD − 1(∼3.9 g/kg 体重)、MD(∼4.2 g/kg 体重)碳水化合物摄入量不足kg 体重),以及与当前建议相关的 MD + 1(∼3.6 g/kg 体重)。我们首次报告,职业足球运动员的 RMR 在一场激烈的比赛后显着增加。此外,我们证实了之前的发现,以强调球员的营养周期实践不足,这可能会损害身体表现和恢复。

更新日期:2023-09-21
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