Citrulline: The amino acid for improved performance and health

Citrulline is a non-essential amino acid that has gained increasing attention in recent years due to its diverse health benefits and importance for athletic performance. In this blog post, we will examine the scientific basis of citrulline's effects in the body, its dosage, and the positive effects of supplementation in more detail.

What is citrulline?

Citrulline is an amino acid that occurs naturally in foods such as watermelons. In the body, citrulline is produced in the liver and plays an important role in the urea cycle, which helps remove excess nitrogen from the body. It is frequently used as a dietary supplement to enhance athletic performance and promote overall health.

How does citrulline work in the body?

Citrulline works in the body through several mechanisms:

1. Nitric oxide production : Citrulline is converted in the body to arginine, which in turn promotes the production of nitric oxide (NO). NO is an important molecule that dilates blood vessels, improves blood flow, and regulates blood pressure (Moinard et al., 2008).

2. Urea cycle : Citrulline plays a central role in the urea cycle, which helps convert ammonia, a byproduct of protein metabolism, into urea and remove it from the body. This supports detoxification and the maintenance of a healthy nitrogen balance (Curis et al., 2005).

3. Improved muscle protein synthesis : Citrulline can promote muscle protein synthesis, which may contribute to improved muscle regeneration and growth (Baudry et al., 2011).

Dosage and application

The recommended dosage of citrulline varies depending on the intended use. For general health promotion and to support the urea cycle, a dose of 3 to 6 grams per day is often recommended. For improving athletic performance, a higher dose of 6 to 8 grams per day may be beneficial. It is recommended to take citrulline on an empty stomach to maximize absorption.

Positive effects of citrulline supplementation

1. Improved athletic performance : Citrulline can improve athletic performance by increasing blood flow and oxygen transport to the muscles. A study by Pérez-Guisado and Jakeman (2010) showed that citrulline malate can increase endurance and strength during athletic activities.

2. Reducing muscle soreness : Citrulline can help reduce muscle soreness after intense training. A study by Pérez-Guisado et al. (2010) found that citrulline malate can significantly reduce muscle pain after exercise.

3. Support for cardiovascular health : By increasing NO production, citrulline can help lower blood pressure and support overall cardiovascular health (Schwedhelm et al., 2008).

4. Improved detoxification : Citrulline supports the urea cycle, which helps in the removal of ammonia and other toxic metabolic products from the body (Curis et al., 2005).

Scientific studies to support this

• Moinard et al. (2008) : This study describes the role of citrulline in NO metabolism and its effects on blood flow and blood pressure.
• Curis et al. (2005) : This research demonstrates the importance of citrulline in the urea cycle and its role in detoxifying the body.
• Baudry et al. (2011) : This study investigates the effects of citrulline on muscle protein synthesis and muscle regeneration.
• Pérez-Guisado et al. (2010) : This study shows that citrulline malate can reduce muscle soreness after intense training.
• Schwedhelm et al. (2008) : This study highlights the positive effects of citrulline on cardiovascular health.

Conclusion

Citrulline is a versatile amino acid with numerous health benefits. It can improve athletic performance, reduce muscle soreness, support cardiovascular health, and promote detoxification. Regular citrulline supplementation can enhance overall well-being and contribute to optimizing physical performance. As with any dietary supplement, it is advisable to discuss its use with a doctor to determine the best dosage and application for individual needs.

Bibliography:

• Baudry, J., et al. (2011). Citrulline supplementation induces changes in body composition and limits age-related metabolic changes in healthy male rats. Journal of Nutrition, 141(8), 1442-1448.
• Curis, E., Crenn, P., & Cynober, L. (2005). Citrulline and the gut. Current Opinion in Clinical Nutrition and Metabolic Care, 8(2), 165-171.
• Moinard, C., et al. (2008). Citrulline: a new key amino acid for the control of nitric oxide bioavailability. European Journal of Nutrition, 47(5), 293-298.
• Pérez-Guisado, J., & Jakeman, PM (2010). Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. Journal of Strength and Conditioning Research, 24(5), 1215-1222.
• Schwedhelm, E., et al. (2008). Pharmacokinetic and pharmacodynamic properties of oral L-citrulline and L-arginine: impact on nitric oxide metabolism. British Journal of Clinical Pharmacology, 65(1), 51-59.

Citrulline offers a natural and effective way to improve health and performance.