Effects of Acute Yohimbine Hydrochloride Supplementation on Repeated Supramaximal Sprint Performance

Megan E. Barnes, Camryn R. Cowan, Lauren E. Boag, Julianne G. Hill, Morgan L. Jones, Kylie M. Nixon, Mckenzie G. Parker, Shelby K. Parker, Mary V. Raymond, Lillie H. Sternenberg, Shelby L. Tidwell, Taylor M. Yount, Tyler D. Williams, Rebecca R. Rogers and Christopher G. Ballmann
Additional contact information
Megan E. Barnes: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Camryn R. Cowan: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Lauren E. Boag: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Julianne G. Hill: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Morgan L. Jones: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Kylie M. Nixon: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Mckenzie G. Parker: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Shelby K. Parker: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Mary V. Raymond: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Lillie H. Sternenberg: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Shelby L. Tidwell: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Taylor M. Yount: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Tyler D. Williams: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Rebecca R. Rogers: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA
Christopher G. Ballmann: Department of Kinesiology, Samford University, 800 Lakeshore Dr. Birmingham, Homewood, AL 35229, USA

IJERPH, 2022, vol. 19, issue 3, 1-12

Abstract: The purpose of this study was to examine the effects of a single acute dose of yohimbine hydrochloride on repeated anaerobic sprint ability. Physically active females ( n = 18) completed two separate repeated supramaximal sprint trials each with a different single-dose treatment: placebo (PL; gluten-free corn starch) or yohimbine hydrochloride (YHM; 2.5 mg). For each trial, participants consumed their respective treatment 20 min before exercise. Following a warm-up, participants completed 3 × 15 s Wingate anaerobic tests (WAnTs) separated by 2 min of active recovery. A capillary blood sample was obtained pre- and immediately post-exercise to measure blood concentrations of lactate (LA), epinephrine (EPI), and norepinephrine (NE). Heart rate (HR) and rate of perceived exertion (RPE) were measured following each WAnT. Findings showed that mean power ( p < 0.001; η 2 = 0.024), total work ( p < 0.001; η 2 = 0.061), and HR ( p < 0.001; η 2 = 0.046), were significantly higher with YHM supplementation versus PL. Fatigue index ( p < 0.001; η 2 = 0.054) and post-exercise LA ( p < 0.001; d = 1.26) were significantly lower with YHM compared to PL. YHM resulted in significantly higher EPI concentrations versus PL ( p < 0.001; η 2 = 0.225) pre- and post-exercise while NE only increased as a function of time ( p < 0.001; η 2 = 0.227) and was unaffected by treatment. While RPE increased after each WAnT, no differences between treatments were observed ( p = 0.539; η 2 < 0.001). Together, these results suggest that acute YHM ingestion imparts ergogenic benefits which may be mediated by lower blood LA and fatigue concomitantly occurring with blood EPI increases. Thus, YHM may improve sprint performance although more mechanistic study is warranted to accentuate underlying processes mediating performance enhancement.

Keywords: power output; Wingate; lactate; epinephrine; norepinephrine (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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