Effect of isolated and combined ingestion of caffeine and citrulline malate on resistance exercise and jumping performance: a randomized double-blind placebo-controlled crossover study.
Markus Estifanos HaugenFredrik Tonstad VårvikJozo GrgicHenrik StudsrudEspen AustheimErik Mathias ZimmermannHallvard Nygaard FalchStian LarsenRoland van den TillaarThomas BjørnsenPublished in: European journal of nutrition (2023)
Caffeine ingestion appears to be ergogenic for muscular strength and muscular endurance, while adding CitMal does not seem to further enhance these effects.