Taurine is a well-known free amino acid that has gained prominence in recent years despite its little or no role in protein formation. Few studies on the ergogenic effect of taurine exist with inconsistent results. The answer to the question of whether performance markers demonstrate the benefit of taurine remains unclear. This study aimed to reach a consensus about whether taurine supplementation is effective on aerobic (time to exhaustion [TTE], maximal oxygen uptake [V̇O2max], and rating of perceived exertion) and anaerobic (power outputs, fatigue index, jumping, and blood lactate level) performance outputs. Google Scholar, PubMed databases, clinical trial websites, and gray literature were reviewed until November 2021. Mean differences (MDs) were pooled using random or fixed-effects models according to the heterogeneity degree of the related output. Although 18 studies were detected for the meta-analysis between 2001 and 2021, 16 studies were grouped. Only randomized controlled trials (single or double-blind) were considered. Taurine supplementation had a significant effect on vertical (MD 5 3.60; 95% confidence interval [CI] [2.32 to 4.89], p , 0.00001) and countermovement (MD 5 8.50; 95% CI [4.78 to 12.22], p , 0.00001) jump performance when compared with a placebo group. Taurine supplementation had no significant effect on the V̇O2max level and rate of perceived exertion (respectively, MD 5 20.54 mL/kg/min; 95% CI [26.84 to 5.75], p 5 0.87; MD 5 20.24; 95% CI [20.74 to 0.27], p 5 0.35) when compared with a placebo group. Overall, it looks to be effective for jumping performance and TTE. Taurine supplementation may be useful for people who want to improve these performance outputs.

This continuing education opportunity explores a variety of topics as they pertain to nutrition and supplement information. Articles 1) Betaine Supplementation: A Critical Review of Its Efficacy for Improving Muscle Strength, Power, and Body Composition 2) Energy and Macronutrient Considerations for Young Athletes 3) Evidence-Based Nutritional Strategies to Enhance Athletic Performance 4) Green Tea and Black Tea for Exercise Recovery: A Systematic Review 5) Understanding the Scientific Evidence and Regulatory State of the U.S. Dietary Supplement Industry: Considerations for Health and Fitness Practitioners

This TSAC Report article highlights resilience and recovery with the performance-enhancing benefits of astaxanthin. Visit NSCA online to learn more about nutrition, resistance training, and tactical athletes

Supplements that claim to boost nitric oxide have not been proven to be all that effective since the actual conversion in the blood cell is rather complicated and requires oxygen, which is usually in short supply during exercise or at high altitude. So how does an athlete boost their nitric oxide production?

Although it may be possible to increase skeletal muscle levels of carnitine by combining it with relatively large amounts of carbohydrates repeatedly throughout the day, or by taking it with choline, there is limited data that shows that carnitine is a fat-burner that results in significant reductions in fat mass.

The purpose of this article is to emphasize the critical need for a nutrition strategy that aligns with the specific demands inherent in the sport of soccer.

This article examines how plant-based diets can effectively support athletic performance. Visit NSCA online to learn more about exercise science and nutrition research.

This TSAC column reviews oxidative damage in tactical populations and examines the role of dietary antioxidants in health and readiness. Visit NSCA online to learn more on nutrition research and tactical performance.

This excerpt from NSCA's Essentials of Tactical Strength and Conditioning explains the importance of third-party certifications on supplements in the tactical population.

A client asks you about melatonin, are you prepared to answer? This article explores the efficacy and safety of supplemental melatonin as a sleep aid in adults.