Capsaicin Analogue Supplementation Does Not Improve 10 km Running Time-Trial Performance in Male Amateur Athletes: A Randomized, Crossover, Double-Blind and Placebo-Controlled Study.

Autor: von Ah Morano AE; Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil., Padilha CS; Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil., Soares VAM; Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil., Andrade Machado F; Post-Graduate Program of Physiological Sciences, Department of Physiological Sciences, State University of Maringá, Maringá 87020-900, Brazil.; Associate Post-Graduate Program in Physical Education UEM/UEL, Department of Physical Education, State University of Maringá, Maringá 87020-900, Brazil., Hofmann P; Exercise Physiology, Training & Training Therapy Research Group, Institute of Human Movement Science, Sport and Health, University of Graz, 8036 Graz, Austria., Rossi FE; Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil.; Immunometabolism of Skeletal Muscle and Exercise Research Group, Federal University of Piauí (UFPI), Teresina PI 64049-550, Brazil., Lira FS; Exercise and Immunometabolism Research Group, Department of Physical Education, São Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil.
Jazyk: angličtina
Zdroj: Nutrients [Nutrients] 2020 Dec 24; Vol. 13 (1). Date of Electronic Publication: 2020 Dec 24.
DOI: 10.3390/nu13010034
Abstrakt: Background: To investigate the acute effects of a capsaicin analogue supplement on 10 km time-trial performance and physiological responses in amateur athletes.
Methods: Twenty-one participants (age = 29.3 ± 5.5 years, weight 74.2 ± 11.3 kg, height 176.0 ± 0.0 cm, fat mass 12.7 ± 3.8%, V˙O 2max 62.7 ± 8.4 mL·k -1 ·min -1 ), completed two randomized, double-blind trials: capsaicin analogue condition (Capsiate (CAP) = 24 mg) or a placebo (PLA) condition. The participants consumed two doses of 12 mg of CAP or PLA capsule 45 min before and immediately at the start of each trial. The time required to complete 10 km, lactate concentration, maximum heart rate (HR peak ), and rating of perceived exertion (RPE) were recorded.
Results: The 10 km time-trial performance (CAP = 45.07 ± 6.41 min vs. PLA = 45.13 ± 6.73, p = 0.828) was not statistically significantly different between conditions. No statistically significant differences between conditions were detected for lactate concentration ( p = 0.507), HR peak ( p = 0.897) and RPE ( p = 0.517).
Conclusion: Two doses of a 12 mg Capsaicin analogue supplement did not improve performance and physiological responses in a 10 km running time-trial in amateur athletes.
Databáze: MEDLINE
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