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Related Experiment Video

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Effects of a Novel Neuromuscular Training Intervention on Jump, Sprint, and Change of Direction in Adult Female Soccer Players
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Caffeine Timing Improves Lower-Body Muscular Performance: A Randomized Trial.

Patrick S Harty1,2, Hannah A Zabriskie1, Richard A Stecker1

  • 1Exercise and Performance Nutrition Laboratory, School of Health Sciences, Lindenwood University, St. Charles, MO, United States.

Frontiers in Nutrition
|December 17, 2020
PubMed
Summary

Consuming caffeine one hour before exercise maximizes muscular performance benefits. This timing is more effective than 30 minutes or two hours prior, with males showing more consistent responses than females.

Keywords:
caffeinenutrient timingperformancepowerstrength

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Area of Science:

  • Exercise Physiology
  • Nutritional Biochemistry
  • Sports Science

Background:

  • Optimal caffeine timing for exercise is not well-established.
  • Caffeine is a known ergogenic aid, but its effectiveness depends on various factors, including timing.
  • Understanding pre-exercise caffeine intake timing is crucial for athletes seeking performance enhancement.

Purpose of the Study:

  • To determine the optimal pre-exercise time to consume caffeine for enhancing lower-body muscular performance.
  • To investigate potential sex differences in the ergogenic response to timed caffeine ingestion.

Main Methods:

  • Healthy, resistance-trained males and females participated in a randomized, double-blind, placebo-controlled crossover study.
  • Participants ingested 6 mg·kg−1 caffeine or placebo at 30 minutes, 1 hour, or 2 hours before performing isometric mid-thigh pulls, countermovement vertical jumps, and knee extensor tests.
  • Performance outcomes were compared across different caffeine timing conditions and between sexes.

Main Results:

  • Caffeine ingestion 1 hour prior to exercise significantly improved countermovement vertical jump and isometric/isokinetic performance compared to placebo.
  • Peak jump height was significantly greater when caffeine was consumed 1 hour versus 30 minutes before testing.
  • Males exhibited more consistent performance improvements with caffeine compared to females.

Conclusions:

  • Pre-exercise caffeine timing significantly influences its ergogenic effects, with 1 hour appearing most effective for lower-body muscular performance.
  • Consuming caffeine approximately 1 hour before exercise can maximize its benefits for active individuals.
  • Responses to caffeine may differ between sexes, with males showing greater consistency in performance enhancement.