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Article

Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography

1
Faculty of Physical Education and Physiotherapy, Opole University of Technology, 45-758 Opole, Poland
2
Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education, 40-065 Katowice, Poland
*
Authors to whom correspondence should be addressed.
Academic Editor: Marilyn Cornelis
Nutrients 2021, 13(3), 815; https://doi.org/10.3390/nu13030815
Received: 29 January 2021 / Revised: 24 February 2021 / Accepted: 26 February 2021 / Published: 2 March 2021
(This article belongs to the Section Sports Nutrition)
Studies on muscle activation time in sport after caffeine supplementation confirmed the effectiveness of caffeine. The novel approach was to determine whether a dose of 9 mg/kg/ body mass (b.m.) of caffeine affects the changes of contraction time and the displacement of electrically stimulated muscle (gastrocnemius medialis) in professional athletes who regularly consume products rich in caffeine and do not comply with the caffeine discontinuation period requirements. The study included 40 professional male handball players (age = 23.13 ± 3.51, b.m. = 93.51 ± 15.70 kg, height 191 ± 7.72, BMI = 25.89 ± 3.10). The analysis showed that in the experimental group the values of examined parameters were significantly reduced (p ≤ 0.001) (contraction time: before = 20.60 ± 2.58 ms/ after = 18.43 ± 3.05 ms; maximal displacement: before = 2.32 ± 0.80 mm/after = 1.69 ± 0.51 mm). No significant changes were found in the placebo group. The main achievement of this research was to demonstrate that caffeine at a dose of 9 mg/kg in professional athletes who regularly consume products rich in caffeine has a direct positive effect on the mechanical activity of skeletal muscle stimulated by an electric pulse. View Full-Text
Keywords: caffeine; TMG; contraction time; professional athletes caffeine; TMG; contraction time; professional athletes
MDPI and ACS Style

Domaszewski, P.; Pakosz, P.; Konieczny, M.; Bączkowicz, D.; Sadowska-Krępa, E. Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography. Nutrients 2021, 13, 815. https://doi.org/10.3390/nu13030815

AMA Style

Domaszewski P, Pakosz P, Konieczny M, Bączkowicz D, Sadowska-Krępa E. Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography. Nutrients. 2021; 13(3):815. https://doi.org/10.3390/nu13030815

Chicago/Turabian Style

Domaszewski, Przemysław, Paweł Pakosz, Mariusz Konieczny, Dawid Bączkowicz, and Ewa Sadowska-Krępa. 2021. "Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography" Nutrients 13, no. 3: 815. https://doi.org/10.3390/nu13030815

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