Acute Effects of Taurine Supplementation on Maximal Fat Oxidation and FATmax in Recreational Endurance Runners: A Randomized, Placebo-Controlled, Crossover, and Triple-Blinded Study.

IF 3 3区 医学 Q2 NUTRITION & DIETETICS
Abdolrahman Ghazzagh, Alireza Naderi, Hamid Agha-Alinejad, Ali Livani, Mohsen Sarlak, Samaneh Aghamohammadi, Bryan Saunders
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Abstract

Taurine (TAU) has been shown to improve time to exhaustion (TTE) and fat oxidation during exercise; however, no studies have examined the effect of acute TAU supplementation on maximal fat oxidation (MFO) and related intensity to MFO (FATmax). Our study aimed to investigate the effect of acute TAU supplementation on MFO, FATmax, VO2peak, and TTE. Eleven recreationally trained male endurance runners performed three incremental running tests. The first visit included a familiarization to the test, followed by two subsequent visits in which exercise was performed 90 min after ingestion of either 6-g TAU or placebo (PLA) using a triple-blind randomized crossover design. There was no effect of TAU on MFO (p = .89, d = -0.07, TAU: 0.48 ± 0.22 g/min; PLA: 0.49 ± 0.15 g/min or FATmax (p = .26, d = -0.66; TAU: 49.17 ± 15.86 %V˙O2peak; PLA: 56.00 ± 13.27 %V˙O2peak). TTE was not significantly altered (TAU: 1,444.8 ± 88.6 s; PLA: 1,447.6 ± 87.34 s; p = .65, d = -0.04). TAU did not show any effect on V˙O2peak in comparison with PLA (TAU: 58.9 ± 8.4 ml·kg-1·min-1; PLA: 56.5 ± 5.7 ml·kg-1·min-1, p = .47, d = 0.48). However, V˙O2 was increased with TAU at most stages of exercise with large effect sizes. The acute ingestion of 6 g of TAU before exercise did not enhance MFO, FATmax, or TTE. However, it did increase the oxygen cost of running fixed intensities in recreationally trained endurance runners.

补充牛磺酸对休闲耐力跑运动员最大脂肪氧化和最大脂肪率的急性影响:一项随机、安慰剂对照、交叉和三盲研究。
牛磺酸(TAU)已被证明可以改善运动中的耗竭时间(TTE)和脂肪氧化;但是,还没有研究考察了急性补充 TAU 对最大脂肪氧化(MFO)和 MFO 相关强度(FATmax)的影响。我们的研究旨在调查急性补充 TAU 对 MFO、FATmax、VO2peak 和 TTE 的影响。11 名经过休闲训练的男性耐力跑运动员进行了三次增量跑步测试。第一次测试包括熟悉测试,随后的两次测试采用三盲随机交叉设计,在摄入6克TAU或安慰剂(PLA)90分钟后进行运动。TAU对MFO(p = .89,d = -0.07,TAU:0.48 ± 0.22 g/min;PLA:0.49 ± 0.15 g/min;FATmax(p = .26,d = -0.66;TAU:49.17 ± 15.86 %V˙O2peak;PLA:56.00 ± 13.27 %V˙O2peak)没有影响。TTE 没有明显变化(TAU:1,444.8 ± 88.6 秒;PLA:1,447.6 ± 87.34 秒;p = .65,d = -0.04)。与 PLA 相比,TAU 对 V˙O2peak 没有任何影响(TAU:58.9 ± 8.4 ml-kg-1-min-1;PLA:56.5 ± 5.7 ml-kg-1-min-1,p = .47,d = 0.48)。然而,V˙O2 TAU 在运动的大多数阶段都有较大的效应大小(ηp2=.43)。在运动前急性摄入 6 克 TAU 不会增强 MFO、FATmax 或 TTE。不过,它确实增加了休闲训练的耐力跑运动员进行固定强度跑步时的氧气成本。
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来源期刊
CiteScore
5.00
自引率
8.00%
发文量
50
审稿时长
6-12 weeks
期刊介绍: The International Journal of Sport Nutrition and Exercise Metabolism (IJSNEM) publishes original scientific investigations and scholarly reviews offering new insights into sport nutrition and exercise metabolism, as well as articles focusing on the application of the principles of biochemistry, physiology, and nutrition to sport and exercise. The journal also offers editorials, digests of related articles from other fields, research notes, and reviews of books, videos, and other media releases. To subscribe to either the print or e-version of IJSNEM, press the Subscribe or Renew button at the top of your screen.
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