{"title":"The effect of acute branched-chain amino acids ingestion on rate of force development in different time intervals: a controlled crossover study.","authors":"Xi-Nuan Zhang, Long-Ji Li, Yan-Hao Tu, Li-Feng Zhang, Hua-Yu Shang, Meng Liu, Ming-Da Li","doi":"10.3389/fnut.2024.1463202","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Branched-chain amino acids (BCAAs) are widely used as sports nutrition supplements. However, their impact on the rate of force development (RFD), an indicator of explosive muscle strength, has not yet been validated. This study aimed to assess the impact of BCAA supplementation on the RFD in college basketball players during simulated games.</p><p><strong>Methods: </strong>This study employed a randomized, controlled crossover, double-blind design. Participants received either BCAAs (0.17 g/kg combined with 0.17 g/kg isocaloric glucose) or a placebo (0.34 g/kg isocaloric glucose) orally 30 min before beginning the exercise protocol. The RFD was quantified using the isometric mid-thigh pull (IMTP) test. Additional outcome measures, including strength and jump tests, agility and sprinting tests, and physiological responses, were also assessed. A two-way repeated measures ANOVA was employed to evaluate the impact of supplements (BCAAs and placebo) on RFD and other related outcome measures.</p><p><strong>Results: </strong>Analysis of the 50 ms RFD demonstrated significant main effects of BCAA supplementation (<i>p</i> = 0.003). The BCAAs group consistently exhibited higher levels of 50 ms RFD compared to the placebo group across rounds 1 to 4. For example, in round 1, the 50 ms RFD was 3702.3 ± 1223.2 N/S in the BCAAs group versus 2931.3 ± 888.8 N/S in the placebo group (<i>p</i> = 0.045). Although no significant between-group differences were observed for the 100, 150, 200, and 250 ms RFD measurements, the BCAAs group consistently showed superior values across all time points. The results of other outcome indicators also suggested that supplementation with BCAAs was indeed effective.</p><p><strong>Conclusion: </strong>The results indicate that BCAA supplementation can enhance RFD in basketball players, particularly at the 50 ms RFD. Our research design provides reliable insights into the effects of BCAAs on athletic performance. Further studies of similar design with larger sample sizes are necessary to confirm and extend these findings.</p><p><strong>Clinical trial registration: </strong>Chinese Clinical Trial Registry, ChiCTR2400091314 (https://www.chictr.org.cn).</p>","PeriodicalId":12473,"journal":{"name":"Frontiers in Nutrition","volume":"11 ","pages":"1463202"},"PeriodicalIF":4.0000,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11750653/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers in Nutrition","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.3389/fnut.2024.1463202","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"NUTRITION & DIETETICS","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Branched-chain amino acids (BCAAs) are widely used as sports nutrition supplements. However, their impact on the rate of force development (RFD), an indicator of explosive muscle strength, has not yet been validated. This study aimed to assess the impact of BCAA supplementation on the RFD in college basketball players during simulated games.
Methods: This study employed a randomized, controlled crossover, double-blind design. Participants received either BCAAs (0.17 g/kg combined with 0.17 g/kg isocaloric glucose) or a placebo (0.34 g/kg isocaloric glucose) orally 30 min before beginning the exercise protocol. The RFD was quantified using the isometric mid-thigh pull (IMTP) test. Additional outcome measures, including strength and jump tests, agility and sprinting tests, and physiological responses, were also assessed. A two-way repeated measures ANOVA was employed to evaluate the impact of supplements (BCAAs and placebo) on RFD and other related outcome measures.
Results: Analysis of the 50 ms RFD demonstrated significant main effects of BCAA supplementation (p = 0.003). The BCAAs group consistently exhibited higher levels of 50 ms RFD compared to the placebo group across rounds 1 to 4. For example, in round 1, the 50 ms RFD was 3702.3 ± 1223.2 N/S in the BCAAs group versus 2931.3 ± 888.8 N/S in the placebo group (p = 0.045). Although no significant between-group differences were observed for the 100, 150, 200, and 250 ms RFD measurements, the BCAAs group consistently showed superior values across all time points. The results of other outcome indicators also suggested that supplementation with BCAAs was indeed effective.
Conclusion: The results indicate that BCAA supplementation can enhance RFD in basketball players, particularly at the 50 ms RFD. Our research design provides reliable insights into the effects of BCAAs on athletic performance. Further studies of similar design with larger sample sizes are necessary to confirm and extend these findings.
Clinical trial registration: Chinese Clinical Trial Registry, ChiCTR2400091314 (https://www.chictr.org.cn).
背景：支链氨基酸（BCAAs）被广泛用作运动营养补充剂。然而，它们对爆发力发展率（RFD）的影响尚未得到验证。RFD是爆发力的一个指标。本研究旨在评估在模拟比赛中补充BCAA对大学篮球运动员RFD的影响。方法：本研究采用随机、对照交叉、双盲设计。参与者在开始运动方案前30 分钟口服BCAAs（0.17 g/kg联合0.17 g/kg等热量葡萄糖）或安慰剂（0.34 g/kg等热量葡萄糖）。RFD采用等长大腿中部牵拉（IMTP）试验进行量化。还评估了其他结果测量，包括力量和跳跃测试、敏捷性和冲刺测试以及生理反应。采用双向重复测量方差分析来评估补充剂（BCAAs和安慰剂）对RFD和其他相关结果测量的影响。结果：对50个 ms RFD的分析显示，补充BCAA有显著的主要作用（p = 0.003）。与安慰剂组相比，BCAAs组在第1轮至第4轮中始终表现出更高的50 ms RFD水平。例如,在第一轮,50 RFD女士是3702.3 ±1223.2 N / S BCAAs组和2931.3 ±888.8 N / S安慰剂组(p = 0.045)。虽然在100,150,200和250 ms RFD测量中没有观察到组间的显著差异，但BCAAs组在所有时间点上都一致显示出优越的值。其他结果指标的结果也表明补充支链氨基酸确实有效。结论：补充BCAA可以提高篮球运动员的RFD，特别是在50 ms RFD时。我们的研究设计为支链氨基酸对运动表现的影响提供了可靠的见解。进一步研究类似的设计与更大的样本量是必要的，以确认和扩展这些发现。临床试验注册：中国临床试验注册中心，ChiCTR2400091314 （https://www.chictr.org.cn）。
期刊介绍：
No subject pertains more to human life than nutrition. The aim of Frontiers in Nutrition is to integrate major scientific disciplines in this vast field in order to address the most relevant and pertinent questions and developments. Our ambition is to create an integrated podium based on original research, clinical trials, and contemporary reviews to build a reputable knowledge forum in the domains of human health, dietary behaviors, agronomy & 21st century food science. Through the recognized open-access Frontiers platform we welcome manuscripts to our dedicated sections relating to different areas in the field of nutrition with a focus on human health.
Specialty sections in Frontiers in Nutrition include, for example, Clinical Nutrition, Nutrition & Sustainable Diets, Nutrition and Food Science Technology, Nutrition Methodology, Sport & Exercise Nutrition, Food Chemistry, and Nutritional Immunology. Based on the publication of rigorous scientific research, we thrive to achieve a visible impact on the global nutrition agenda addressing the grand challenges of our time, including obesity, malnutrition, hunger, food waste, sustainability and consumer health.
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