PDF(Pubmed)
Abstract：
BACKGROUND: β-alanine, a non-essential amino acid found in the diet and produced through nucleotide catabolism, is significant for muscle performance due to its role in carnosine synthesis. This study aims to assess the impact of a 4-week β-alanine supplementation on neuromuscular fatigue in individuals engaging in High-Intensity Functional Training (HIFT) and its subsequent effect on sports performance, distinguishing between central fatigue from the CNS and peripheral fatigue from the muscular system.
METHODS: This study (a randomized controlled trial) comprised a total of 27 subjects, who were divided into two groups. Group A (the control group) was administered sucrose powder, while Group B (the experimental group) was given β-alanine powder. The subjects were randomly assigned to either the experimental or control groups. This study lasted four weeks, during which both groups participated in high-intensity interval training (HIFT) on the first day to induce fatigue and work close to their VO2 max.
RESULTS: Statistically significant changes were in the sports performance variables, specifically vertical jump and jumping power (p = 0.027). These changes were observed only in the group that had been supplemented with β-alanine. Nevertheless, no alterations were observed in any other variables, including fatigue, metabolic intensity of exercise, or perceived intensity (p > 0.05).
CONCLUSIONS: A four-week β-alanine intake program demonstrated an improvement in the capacity of subjects, as evidenced by enhanced vertical jump and power performance. Nevertheless, it does result in discernible alterations in performance.
METHODS: This study (a randomized controlled trial) comprised a total of 27 subjects, who were divided into two groups. Group A (the control group) was administered sucrose powder, while Group B (the experimental group) was given β-alanine powder. The subjects were randomly assigned to either the experimental or control groups. This study lasted four weeks, during which both groups participated in high-intensity interval training (HIFT) on the first day to induce fatigue and work close to their VO2 max.
RESULTS: Statistically significant changes were in the sports performance variables, specifically vertical jump and jumping power (p = 0.027). These changes were observed only in the group that had been supplemented with β-alanine. Nevertheless, no alterations were observed in any other variables, including fatigue, metabolic intensity of exercise, or perceived intensity (p > 0.05).
CONCLUSIONS: A four-week β-alanine intake program demonstrated an improvement in the capacity of subjects, as evidenced by enhanced vertical jump and power performance. Nevertheless, it does result in discernible alterations in performance.
摘要：
背景：β-丙氨酸，一种在饮食中发现的非必需氨基酸，通过核苷酸分解代谢产生，由于其在肌肽合成中的作用，对肌肉性能具有重要意义。本研究旨在评估4周补充β-丙氨酸对高强度功能训练（HIFT）个体神经肌肉疲劳的影响及其对运动表现的后续影响。区分中枢神经系统的中枢疲劳和肌肉系统的外周疲劳。
方法：本研究（随机对照试验）共包括27名受试者，他们被分成两组。A组（对照组）给予蔗糖粉，B组(实验组)给予β-丙氨酸散剂。受试者被随机分配到实验组或对照组。这项研究持续了四周,两组在第一天参加高强度间歇训练（HIFT），以引起疲劳并接近其VO2最大值。
结果：统计学上显著的变化是运动表现变量，特别是垂直跳变和跳变功率(p=0.027)。仅在补充了β-丙氨酸的组中观察到这些变化。然而，在任何其他变量中都没有观察到变化，包括疲劳,运动的代谢强度，或感知强度(p>0.05)。
结论：一项为期四周的β-丙氨酸摄入计划表明受试者的能力得到了改善，增强的垂直跳跃和功率性能证明。然而，它确实会导致明显的性能变化。
方法：本研究（随机对照试验）共包括27名受试者，他们被分成两组。A组（对照组）给予蔗糖粉，B组(实验组)给予β-丙氨酸散剂。受试者被随机分配到实验组或对照组。这项研究持续了四周,两组在第一天参加高强度间歇训练（HIFT），以引起疲劳并接近其VO2最大值。
结果：统计学上显著的变化是运动表现变量，特别是垂直跳变和跳变功率(p=0.027)。仅在补充了β-丙氨酸的组中观察到这些变化。然而，在任何其他变量中都没有观察到变化，包括疲劳,运动的代谢强度，或感知强度(p>0.05)。
结论：一项为期四周的β-丙氨酸摄入计划表明受试者的能力得到了改善，增强的垂直跳跃和功率性能证明。然而，它确实会导致明显的性能变化。
