Supplements for Athletic Performance: An Evidence-Based Guide

⏱ 12 min read

To maximize athletic performance, evidence-based sports performance supplements are crucial tools, not shortcuts. This guide analyzes compounds such as creatine monohydrate, Cordyceps, and Ashwagandha, detailing how science supports their use to improve strength, endurance, and recovery in demanding athletes.

By Kóre Labs Team | March 17, 2026

Why is scientific evidence fundamental in sports performance supplements?

In the fitness industry, exaggerated promises abound. At Kóre Labs, we operate under the value "Science First." We don't rely on anecdotes, but on robust clinical data. Ethical and effective supplementation requires understanding the mechanisms of action, optimal dosages, and studied populations. Only then can we guarantee that a compound will truly enhance your performance without compromising your health.

When you're looking for sports performance supplements, clinical evidence (double-blind, placebo-controlled studies) is your only guarantee of efficacy. Institutions like the International Society of Sports Nutrition (ISSN) classify supplements according to their level of scientific support, and in this guide, we focus on those with the highest classification.

Is Creatine Monohydrate the best supplement for strength?

Absolutely. Creatine monohydrate is the most studied and effective sports performance supplement for increasing strength, power, and lean muscle mass. It works by increasing phosphocreatine stores in the muscle, which allows for faster regeneration of ATP (the cellular energy currency) during high-intensity, short-duration efforts.

Hundreds of studies support its effectiveness. A comprehensive review by the ISSN concluded that creatine monohydrate is the most effective ergogenic nutritional supplement currently available to athletes in terms of increasing high-intensity exercise capacity and lean body mass during training (Buford et al., 2007).

At Kóre, we offer Creatine Monohydrate 200 Mesh. The "200 Mesh" specification refers to particle size; it is micronized, meaning it is finer than standard creatine. This improves solubility and reduces the risk of stomach upset, a common problem with lower-quality creatines. If you're looking to maximize strength and power, this is the evidence-based choice.

How does Cordyceps Sinensis improve endurance and VO₂ Max?

Cordyceps Sinensis is a functional mushroom that has gained traction in sports nutrition for its ability to improve energy metabolism. The primary mechanism appears to be an increase in ATP production and improved oxygen utilization during exercise.

For endurance athletes, VO₂ max (the maximum amount of oxygen the body can use during intense exercise) is a critical marker of performance. A clinical study showed that supplementation with Cordyceps Sinensis significantly improved VO₂ max and ventilatory threshold in healthy adults, suggesting a potential for improved performance in aerobic exercise (Yi et al., 2004).

By incorporating our Cordyceps Sinensis into your regimen, you are using a science-backed mushroom to push your endurance limits. It's a pillar in our Kratos collection, designed for pure strength and physical performance.

What does science say about Ashwagandha for athletes?

Ashwagandha (Withania somnifera) is a powerful adaptogen. In a sports context, its value lies in modulating the response to physical and psychological stress. Intense exercise elevates cortisol; while this is part of adaptation, chronically elevated levels can lead to overtraining and muscle catabolism.

Clinical studies indicate that Ashwagandha can significantly reduce serum cortisol levels. Furthermore, recent research suggests direct benefits in performance. One study found that Ashwagandha supplementation was associated with significant increases in muscle strength and size, and a reduction in exercise-induced muscle damage, along with an increase in testosterone levels (Wankhede et al., 2015).

Our Ashwagandha is a strategic tool for recovery. By managing physiological stress, it allows athletes to train more frequently and intensely. Learn more about the science behind Ashwagandha's athletic potential on our blog.

Marathon Essential: Evidence-Based Synergy for Runners

Recognizing the unique needs of endurance athletes, we developed Marathon Essential. This formula is not a random mix; it is a synergy of compounds designed to address endurance, inflammation, and cellular energy comprehensively.

Marathon Essential combines adaptogens like Cordyceps and Ashwagandha with other critical cofactors. The goal is to optimize VO₂ max, modulate the post-race inflammatory response, and maintain mental clarity during challenging miles. It embodies our "Quality or Nothing" value: a premium formula where every ingredient has a science-backed purpose for the demanding runner.

The Importance of YMYL Quality in Sports Supplements

When you consume supplements, you are entrusting your health (Your Money, Your Life - YMYL) to a brand. At Kóre Labs, we take this responsibility with utmost seriousness. Ingredient purity is non-negotiable. A low-quality supplement may contain contaminants, heavy metals, or not have the declared amount of the active compound.

Our Creatine 200 Mesh is an example of this commitment: micronized for maximum absorption and purity. All our products adhere to strict quality controls. In Mexico, supplement regulation is complex; we invite you to read about Ashwagandha and COFEPRIS to understand the regulatory landscape.

Transparency is part of our "Architecture of Truth." We hide nothing behind "proprietary blends." You know exactly what you're consuming and why science supports it. Your rebirth begins with informed decisions and products of unwavering integrity.