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Effects of Zembrin® (Sceletium tortuosum) Supplementation on Mood, Soreness, and Performance Following Unaccustomed Resistance Exercise: A Pilot Study

Department of Kinesiology, Samford University, Birmingham, AL 35226, USA
*
Author to whom correspondence should be addressed.
Authors equally contributed to the work.
FACSM (Fellow of the American College of Sports Medicine).
Academic Editor: Herbert Ryan Marini
Nutraceuticals 2021, 1(1), 2-11; https://doi.org/10.3390/nutraceuticals1010002
Received: 25 May 2021 / Revised: 30 August 2021 / Accepted: 2 September 2021 / Published: 16 September 2021
(This article belongs to the Special Issue Current State of the Art—Nutraceutical Components of Foods)
The purpose of this study was to investigate acute Zembrin® (Sceletium tortuosum) supplementation on muscle soreness, markers of muscle damage, mood, and exercise performance following unaccustomed resistance exercise. Untrained females (n = 16) were divided into two groups with a different three-day treatment regimen: (1) placebo (PL) and (2) Zembrin® (ZEM). During the initial visit, baseline perceived soreness, range of motion (ROM), mood state (profile of mood states (POMS) questionnaire), and plasma lactate dehydrogenase concentrations (LDH) were measured followed by the performance of an eccentric bicep curl protocol with their non-dominant arm. The total repetitions and rate of perceived exertion (RPE) were recorded throughout the exercise. The participants then supplemented with the corresponding treatment immediately following, the subsequent day, and 30 min prior to completing a 48 h follow-up visit. For the 48 h visit, all procedures were repeated and comparisons were drawn for perceived soreness, ROM, LDH, mood scores, total repetitions, and RPE. The findings indicate that short-term ZEM supplementation resulted in lower perceived soreness (p = 0.020) and a greater preservation of ROM (p = 0.028) at 48 h versus the PL group. Mood worsened from the baseline to 48 h regardless of the treatment (p = 0.043) but the decrements were exacerbated in the PL group compared with the ZEM group (p < 0.001). LDH levels (p = 0.019) and RPE (p = 0.008) were higher and total repetitions were lower (p < 0.001) at 48 h irrespective of the treatment. Although short-term dietary enrichment with ZEM did not alter the exercise performance or biomarkers of muscle damage, the current results suggest ZEM supplementation may be effective in reducing the markers of soreness and preserve mood following unaccustomed eccentric exercise. View Full-Text
Keywords: range of motion; delayed onset muscle soreness; lactate dehydrogenase; profile of mood states range of motion; delayed onset muscle soreness; lactate dehydrogenase; profile of mood states
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MDPI and ACS Style

Berry, A.R.; Langley, H.N.; Rogers, R.R.; Benjamin, C.L.; Williams, T.D.; Ballmann, C.G. Effects of Zembrin® (Sceletium tortuosum) Supplementation on Mood, Soreness, and Performance Following Unaccustomed Resistance Exercise: A Pilot Study. Nutraceuticals 2021, 1, 2-11. https://doi.org/10.3390/nutraceuticals1010002

AMA Style

Berry AR, Langley HN, Rogers RR, Benjamin CL, Williams TD, Ballmann CG. Effects of Zembrin® (Sceletium tortuosum) Supplementation on Mood, Soreness, and Performance Following Unaccustomed Resistance Exercise: A Pilot Study. Nutraceuticals. 2021; 1(1):2-11. https://doi.org/10.3390/nutraceuticals1010002

Chicago/Turabian Style

Berry, Angela R., Haley N. Langley, Rebecca R. Rogers, Courteney L. Benjamin, Tyler D. Williams, and Christopher G. Ballmann. 2021. "Effects of Zembrin® (Sceletium tortuosum) Supplementation on Mood, Soreness, and Performance Following Unaccustomed Resistance Exercise: A Pilot Study" Nutraceuticals 1, no. 1: 2-11. https://doi.org/10.3390/nutraceuticals1010002

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