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Updated: Jun 27, 2026

Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions
09:11

Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions

Published on: October 2, 2018

Caffeine and sports performance.

Louise M Burke1

  • 1Department of Sports Nutrition, Australian Institute of Sport, P.O. Box 176, Belconnen, ACT, Canberra 2616, Australia. louise.burke@ausport.gov.au

Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquee, Nutrition Et Metabolisme
|December 18, 2008
PubMed
Summary
This summary is machine-generated.

Caffeine can enhance athletic performance, particularly in endurance and high-intensity activities, when consumed in moderate doses (around 3 mg/kg). Further research is needed to clarify effects on strength-based sports and individual responses.

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Last Updated: Jun 27, 2026

Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions
09:11

Caffeine Extraction, Enzymatic Activity and Gene Expression of Caffeine Synthase from Plant Cell Suspensions

Published on: October 2, 2018

Area of Science:

  • Sports Science and Exercise Physiology
  • Nutritional Biochemistry
  • Human Performance Optimization

Background:

  • Athletes frequently inquire about caffeine's impact on endurance and exercise capacity.
  • Existing research on caffeine and sports performance is often limited by study design, failing to reflect real-world athletic conditions.
  • A need exists for studies using well-trained athletes, sport-specific conditions, and realistic exercise protocols.

Purpose of the Study:

  • To evaluate the efficacy of caffeine ingestion on athletic performance across various sports.
  • To identify optimal caffeine dosages and timing for performance enhancement.
  • To highlight research gaps concerning caffeine's effects on different types of athletic events and individual athlete responses.

Main Methods:

  • Review of existing literature focusing on studies with well-trained subjects and sport-relevant conditions.
  • Analysis of exercise protocols simulating real-life sporting events.
  • Encouragement of statistical analyses that quantify meaningful performance changes.

Main Results:

  • Moderate caffeine intake (approximately 3 mg/kg body mass) appears to benefit performance.
  • Performance enhancements are observed across endurance, stop-and-go, and sustained high-intensity activities (1-60 minutes).
  • The effects of caffeine on pure strength and power events remain inconclusive.

Conclusions:

  • Caffeine, in moderate doses, offers performance benefits for a wide array of sports.
  • Further research should investigate optimal dosing strategies and caffeine's impact on diverse athletic disciplines.
  • Individual variability in response, alongside factors like sleep and hydration, requires consideration.