Caitlyn M. Barr: Class of 2007
Marisa E. McNeal: Class of 2007
Background: The purpose of this study was to determine the effects of an acute dose of 5 mg/kg of caffeine on perceived pain of the quadriceps during a sustained submaximal isometric contraction.
Methods: A total of 15 low caffeine consuming college aged women (20.5 ± 1.4 y, 66.0 ± 9.0 kg; mean ± SD) participated in this study. 2–7 d after a familiarization trial subjects ingested, in a double blind random crossover manner, either 5 mg/kg caffeine (Caf) or a placebo (P), 1 h prior to performing a 2 min isometric leg extension at 45% of peak torque using visual cues to maintain force production. Every 15 s subjects rated their level of pain using the Borg CR10 pain scale. Subjects returned to the lab 2–7 d later to repeat the testing with the other condition. Data were analyzed using a repeated measures ANOVA with a Tukey's HSD post hoc.
Results: Caffeine ingestion resulted in a lower pain score at all time points during the 2 min isometric contraction. This difference approached significance at 90 s (Caf = 3.2 ± 1.4, P = 4.1 ± 1.4; p < 0.10), and became significantly different at 105 s (Caf = 3.8 ± 1.2, P = 4.9 ± 1.5; p < 0.05) and at 120 s (Caf = 4.4 ± 1.5, P = 5.4 ± 1.5; p < 0.05).
Conclusion: Acute caffeine ingestion attenuates perception of muscle pain in the quadriceps during a sustained submaximal isometric contraction. This effect becomes
This is the publisher's version of the work. This publication appears in Gettysburg College's institutional repository by permission of the copyright owner for personal use, not for redistribution.
Noreen, Eric E., et al. "The Effect of Caffeine Ingestion on Perception of Muscle Pain During a Sustained Submaximal Isometric Contraction of the Quadriceps." Journal of the International Society of Sports Nutrition 5 Supplement 1 (September 2008), 18.
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Original version is available from the publisher at: http://www.jissn.com/content/5/S1/P18