Report / Paper metadata
Creatine formulations and repeated sprint training: effects on physical and physiological adaptations in soccer players during the short-term preparation phase.
Forty collegiate soccer players trained for four weeks while receiving one of three creatine formulations or placebo. The study reported differences in selected short-duration performance measures, but not in every physiological outcome. Ten players per group cannot settle a general product ranking.
What was compared?
Researchers randomly divided forty young male soccer players into four groups of ten: creatine monohydrate, creatine ethyl ester, creatine hydrochloride and placebo. All groups completed twelve repeated-sprint training sessions over four weeks. The comparison concerns supplementation alongside the same short training programme.
Which outcomes improved?
All groups improved after training. The abstract reports greater changes with supplementation in physical-performance tests, peak power and fatigue index. It reports no significant between-group differences in mean power or maximal oxygen uptake. Those null findings matter when describing the result as a whole.
Can the formulations be ranked?
The authors report larger gains with the ethyl-ester and hydrochloride groups than with monohydrate in several measured outcomes. The abstract does not supply all effect sizes, uncertainty ranges, dosing details or blinding information needed to judge that comparison. A small, short trial in one athletic population does not establish which formulation is best for other people or for longer use.
What is outside the evidence?
The tests measured performance during a preparation period, not injury prevention, competition results or long-term health. This abstract-based explanation does not establish comparative safety or recommend buying a product. The full methods and wider evidence would be needed before making those decisions.
- Journal
- Journal of the International Society of Sports Nutrition
- Kind
- Paper metadata
- Identifier
- PMID 42720250