L-Theanine and Improved Grip Strength

• Performance-enhancing effects of caffeine and L-Theanine among Iranian elite wrestlers: a focus on cognitive and specific physical performance.

  • 2025-09-22
  • RCT
  • Journal of the International Society of Sports Nutrition 22(1)
  • • Rouzbeh Razazan
    • Mohammad Hemmatinafar
    • Babak Imanian
    • Nima Jahaniboushehri
    • Rasoul Rezaei
    • Gholamhossein Nazemzadegan

  • PubMed: 40977612
  • DOI: 10.1080/15502783.2025.2564238

  9 Insights on

  • Improved Grip Strength

  • High evidence
  • Athletes

  CAF+THE outperformed PLA in wall-squat time (p = 0.001), MBT (p = 0.005), VJH (p = 0.011), and grip strength (p = 0.004).

  Effect

  Neutral

  Effect size

  Small

  Significant

  No

  Dose

  3 mg/kg