Effects of dietary supplements on athletic performance in elite soccer players: a systematic review

Jul 18, 2023Journal of the International Society of Sports Nutrition

How dietary supplements may affect athletic performance in top soccer players

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Abstract

A total of 18 studies involving elite soccer players were reviewed for the effects of various dietary supplements on athletic performance.

  • Caffeine supplementation at 3 to 6 mg/kg of body mass may enhance jump height and sprint ability, especially in female players, though responses can vary individually.
  • Creatine supplementation could improve sprinting, agility, and jump performance in female soccer players.
  • Protein intake may enhance sprint and jump performance between matches when dietary protein is insufficient.
  • Carbohydrate and electrolyte beverages can support carbohydrate intake during training and match days but do not independently enhance performance.
  • Tart cherry juice might help maintain performance after matches that lead to muscle damage, although dietary compounds could lessen its effectiveness.
  • Nitrate-rich beetroot juice may reduce performance decline in the days following matches.

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Key numbers

18
Total Studies Analyzed
Studies meeting inclusion criteria for dietary supplements and performance.
307
Sample Size
Total number of elite soccer players across included studies.
3–6 mg/kg
Caffeine Dose Range
Recommended caffeine dosage for enhancing athletic performance.

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