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The effects of a caffeine-containing beverage on neuromuscular performance during a multi-joint, lower body power exercise

  • Meghan McCann1,
  • Amanda Wright1,
  • Stephen Siegle1,
  • Jenna Veldhuizen1,
  • Stephanie Wojton1,
  • Kelsey Jacobs1,
  • Eric Kuklinski1,
  • Tyler Krings1,
  • Elizabeth Scheckel1,
  • Carly Homan1,
  • Emily Kammerer1,
  • Dawn Anderson1 and
  • Lonnie Lowery1Email author
Journal of the International Society of Sports Nutrition20129(Suppl 1):P22

Published: 19 November 2012


CaffeineLower BodyPeak VelocityPeak ForceEnergy Drink


Current research has shown varied results when comparing the effects of caffeinated beverages on explosive exercise movements. We hypothesized that lower body muscular explosiveness would be significantly increased (p < 0.05) after Redline® energy drink ingestion versus a similar placebo (PLB) drink in recreationally active subjects (n=16).


After a day of dietary control and caffeine abstinence, otherwise-fasted participants performed four separate, strict squat jumps (SJ) under both conditions 48 – 96 hours apart. The variables measured included peak power (POW), peak force (FOR), peak velocity (VEL), maximal displacement (DSP), and maximal rate of force development (RFD) in the SJ for both Redline® energy drink and PLB trials.


These preliminary data illustrated a significant increase in peak velocity in the Redline® energy drink condition versus PLB (Redline® 2.35± 0.36 m/s vs. PLB 2.29± 0.34 m/s [p= 0.033]). All other variables were regarded as non-significant.


Our early findings only partially support our hypothesis because all but one variable was unaffected during the squat jump. Future research should focus on potential differences between upper- and lower-body power exercises as they respond to caffeine-related interventions.

Authors’ Affiliations

Department of Health, Exercise and Rehabilitative Sciences, Winona State University, Winona, USA


© McCann et al; licensee BioMed Central Ltd. 2012

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.