Creatine is one of the most widely studied supplements in sports nutrition. This article explains what it is, how it works and the types of exercise for which its benefits are best established.
What is creatine?
Creatine is a compound naturally present in the body, particularly in muscle. It is synthesised by the body and is also obtained from foods such as meat and fish. Its principal role is associated with the rapid supply of energy.
How does creatine work?
The creatine phosphate system helps regenerate ATP, the energy source used during short, intense efforts such as sprinting and weightlifting. Supplementation can increase muscle creatine stores and support performance in repeated high-intensity exercise.
Potential benefits of creatine supplementation
Changes in muscle mass: Creatine can increase water retained within muscle cells, contributing to an initial increase in body mass. Longer-term changes also depend on training and diet.
Strength and exercise performance: Creatine supplementation can support strength and performance during repeated bouts of high-intensity exercise, particularly alongside appropriate training.
Recovery considerations: Creatine is studied for its effects on recovery as well as exercise performance. Benefits vary by context and should not be presented as guaranteed faster recovery for every user.
Creatine use and supplementation protocols
Dosage: Daily maintenance intakes of 3–5 g are commonly used in research and sports nutrition. Individual suitability and use should follow the product instructions and professional advice where needed.
Supplementation schedules: Different protocols are used, with or without an initial loading phase. Cycling is not an essential part of standard research protocols. The appropriate approach depends on individual circumstances and the intended use.
Safety and tolerability
Creatine is well studied and generally well tolerated by healthy adults at commonly used doses. Increased body mass and digestive discomfort can occur. People with medical conditions should seek professional advice before taking supplements.
Creatine in sports nutrition
Creatine has an established role in supporting repeated high-intensity exercise. It can complement a suitable training programme and diet, but results vary. Product quality, appropriate use and individual needs remain central considerations when selecting a supplement.