Caffeine Supplementation Improves Anaerobic Performance and Neuromuscular Efficiency and Fatigue in Olympic-Level Boxers

San Juan Ferrer, Alejandro and López Samanes, Álvaro and Jodra, Pablo and Valenzuela, Pedro L. and Rueda, Javier and Veiga Herreros, Pablo and Pérez López, Alberto and Domínguez, Raúl (2019). Caffeine Supplementation Improves Anaerobic Performance and Neuromuscular Efficiency and Fatigue in Olympic-Level Boxers. "Nutrients", v. 11 (n. 9); p. 2120. ISSN 2072-6643. https://doi.org/10.3390/nu11092120.

Description

Title: Caffeine Supplementation Improves Anaerobic Performance and Neuromuscular Efficiency and Fatigue in Olympic-Level Boxers
Author/s:
  • San Juan Ferrer, Alejandro
  • López Samanes, Álvaro
  • Jodra, Pablo
  • Valenzuela, Pedro L.
  • Rueda, Javier
  • Veiga Herreros, Pablo
  • Pérez López, Alberto
  • Domínguez, Raúl
Item Type: Article
Título de Revista/Publicación: Nutrients
Date: September 2019
ISSN: 2072-6643
Volume: 11
Subjects:
Freetext Keywords: anaerobic; caffeine; CMJ; ergogenic aids; exercise; nutrition; sport supplement; Wingate; electromyography; efficiency
Faculty: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Department: Salud y Rendimiento Humano
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Background: this study examined the effects of caffeine supplementation on anaerobic performance, neuromuscular efficiency and upper and lower extremities fatigue in Olympic-level boxers. Methods: Eight male athletes, members of the Spanish National Olympic Team, were enrolled in the study. In a randomized double-blind, placebo-controlled, counterbalanced, crossover design, the athletes completed 2 test sessions after the intake of caffeine (6 mg kg) or placebo. Sessions involved initial measures of lactate, handgrip and countermovement jump (CMJ) performance, followed by a 30-seconds Wingate test, and then final measures of the previous variables. During the sessions, electromiography (EMG) data were recorded on the gluteus maximus, biceps femoris, vastus lateralis, gastrocnemius lateral head and tibialis anterior. Results: caffeine enhanced peak power (6.27%, p < 0.01; E ect Size (ES) = 1.26), mean power (5.21%; p < 0.01; ES = 1.29) and reduced the time needed to reach peak power (9.91%, p < 0.01; ES = 0.58) in theWingate test, improved jump height in the CMJ (+2.4 cm, p < 0.01), and improved neuromuscular e ciency at peak power in the vastus lateralis (ES = 1.01) and gluteus maximus (ES = 0.89), and mean power in the vastus lateralis (ES = 0.95) and tibialis anterior (ES = 0.83). Conclusions: in these Olympic-level boxers, caffeine supplementation improved anaerobic performance without a ecting EMG activity and fatigue levels in the lower limbs. Further benefits observed were enhanced neuromuscular e ciency in some muscles and improved reaction speed.

More information

Item ID: 64261
DC Identifier: http://oa.upm.es/64261/
OAI Identifier: oai:oa.upm.es:64261
DOI: 10.3390/nu11092120
Official URL: https://www.mdpi.com/2072-6643/11/9/2120
Deposited by: Memoria Investigacion
Deposited on: 24 Nov 2020 08:00
Last Modified: 24 Nov 2020 08:00
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