赛前碳水化合物摄入对模拟盖尔式足球比赛中跑动表现和底物利用的影响。

The Effects of Pre-Game Carbohydrate Intake on Running Performance and Substrate Utilisation during Simulated Gaelic Football Match Play.

机构信息

School of Health Sciences, Liverpool Hope University, Liverpool L16 9JD, UK.

Gaelic Sports Research Centre, Technological University of Dublin, Tallaght, D24 FKT9 Dublin, Ireland.

出版信息

Nutrients. 2021 Apr 21;13(5):1392. doi: 10.3390/nu13051392.

DOI:10.3390/nu13051392

PMID:33919043

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8142997/

Abstract

BACKGROUND

Previous research has reported that elite Gaelic football players' carbohydrate (CHO) intakes are sub-optimal, especially, in the lead up to competitive matches. Despite clear decrements in running performance across elite Gaelic football matches, there are no studies that have investigated nutrition interventions on match-related Gaelic football performance. The aim of this study was to determine whether a higher-CHO diet in line with sports nutrition guidelines can improve Gaelic football-related performance compared to lower CHO intakes previously observed in Gaelic footballers.

METHODS

Twelve Gaelic football players completed a Gaelic football simulation protocol (GFSP) on two occasions after consuming a high-CHO diet (7 g·kg) (HCHO) or an energy-matched lower-CHO diet (3.5 g·kg) (L-CHO) for 48 h. Movement demands and heart rate were measured using portable global positioning systems devices. Countermovement jump height (CMJ) and repeated-sprint ability (RSA) were measured throughout each trial. Expired respiratory gases were collected throughout the trial using a portable gas analyser. Blood samples were taken at rest, half-time, and post-simulation.

RESULTS

There was no significant difference in total distance ( = 0.811; η = 0.005) or high-speed running distance (HSRD) covered between both trials. However, in the second half of the HCHO trial, HSRD was significantly greater compared to the second half of the LCHO trial ( = 0.015). Sprint distance covered during GFSP was significantly greater in HCHO (8.1 ± 3.5 m·min) compared with LCHO (6.4 ± 3.2 m·min) ( = 0.011; η = 0.445). RSA performance ( < 0.0001; η = 0.735) and lower body power (CMJ) ( < 0.0001; η = 0.683) were significantly greater during the HCHO trial compared to LCHO. Overall CHO oxidation rates were significantly greater under HCHO conditions compared to LCHO (3.3 ± 0.5 vs. 2.7 ± 0.6 g·min) ( < 0.001; η = 0.798). Blood lactate concentrations were significantly higher during HCHO trial versus LCHO ( = 0.026; η = 0.375). There were no significant differences in plasma glucose, non-esterified fatty acids (NEFAs), and glycerol concentration between trials. In both trials, all blood metabolites were significantly elevated at half-time and post-trial compared to pre-trial.

CONCLUSION

These findings indicate that a higher-CHO diet can reduce declines in physical performance during simulated Gaelic football match play.

摘要

背景

先前的研究报告称，精英盖尔式足球运动员的碳水化合物（CHO）摄入量不理想，尤其是在比赛前。尽管在精英盖尔式足球比赛中跑步表现明显下降，但没有研究调查营养干预对与盖尔式足球相关的比赛表现的影响。本研究的目的是确定与运动营养指南一致的高 CHO 饮食是否可以改善盖尔式足球相关表现，与之前观察到的盖尔式足球运动员的低 CHO 摄入量相比。

方法

12 名盖尔式足球运动员在两次试验中分别食用高 CHO 饮食（7 g·kg）（HCHO）或能量匹配的低 CHO 饮食（3.5 g·kg）（L-CHO）48 小时后，完成盖尔式足球模拟方案（GFSP）。使用便携式全球定位系统设备测量运动需求和心率。在每次试验中测量了纵跳高度（CMJ）和重复冲刺能力（RSA）。使用便携式气体分析仪在整个试验过程中收集呼出的呼吸气体。在休息、中场休息和模拟后采集血液样本。

结果

两次试验之间总距离（ = 0.811；η = 0.005）或高速跑动距离（HSRD）没有显著差异。然而，在 HCHO 试验的下半场，HSRD 明显大于 LCHO 试验的下半场（ = 0.015）。在 GFSP 期间，HCHO 覆盖的冲刺距离明显大于 LCHO（8.1 ± 3.5 m·min）（ = 0.011；η = 0.445）。与 LCHO 相比，RSA 性能（ < 0.0001；η = 0.735）和下半身力量（CMJ）（ < 0.0001；η = 0.683）在 HCHO 试验中显著更大。与 LCHO 相比，HCHO 条件下的整体 CHO 氧化率显著更高（3.3 ± 0.5 vs. 2.7 ± 0.6 g·min）（ < 0.001；η = 0.798）。与 LCHO 相比，HCHO 试验中的血乳酸浓度明显更高（ = 0.026；η = 0.375）。两次试验之间的血浆葡萄糖、非酯化脂肪酸（NEFAs）和甘油浓度均无显著差异。在两次试验中，与试验前相比，所有血液代谢物在中场休息和试验后均显著升高。