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Caffeinated energy drink intake modulates motor circuits at rest, before and after a movement

Concerto, Carmen ; Infortuna, Carmenrita ; Chusid, Eileen ; Coira, Diego ; Babayev, Jacqueline ; Metwaly, Rowan ; Naenifard, Hesam ; Aguglia, Eugenio ; Battaglia, Fortunato

Physiology & behavior, 2017-10, Vol.179, p.361-368 [Periódico revisado por pares]

United States: Elsevier Inc

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Caffeinated energy drink intake modulates motor circuits at rest, before and after a movement
Autor: Concerto, Carmen ; Infortuna, Carmenrita ; Chusid, Eileen ; Coira, Diego ; Babayev, Jacqueline ; Metwaly, Rowan ; Naenifard, Hesam ; Aguglia, Eugenio ; Battaglia, Fortunato
Assuntos: Adult ; Caffeine - administration & dosage ; Central Nervous System Stimulants - administration & dosage ; Cortical excitability ; Cross-Over Studies ; Double-Blind Method ; Energy drink ; Energy Drinks ; Evoked Potentials, Motor - drug effects ; Evoked Potentials, Motor - physiology ; Female ; Hand - physiology ; Humans ; Male ; Motor Activity - drug effects ; Motor Activity - physiology ; Motor Cortex - drug effects ; Motor Cortex - physiology ; Movement preparation ; Muscle, Skeletal - drug effects ; Muscle, Skeletal - physiology ; Neural Inhibition - drug effects ; Neural Inhibition - physiology ; Neural Pathways - drug effects ; Neural Pathways - physiology ; Neuronal Plasticity - drug effects ; Neuronal Plasticity - physiology ; Plasticity ; Post-exercise facilitation ; Reaction Time - drug effects ; Reaction Time - physiology ; Rest ; TMS ; Transcranial Magnetic Stimulation
É parte de: Physiology & behavior, 2017-10, Vol.179, p.361-368
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Descrição: Energy drinks are thought to improve certain aspects of athletic and cognitive performances. Moreover, less is understood about physiological mechanisms that might underlie these effects. The aim of this study was to examine the influence of sugar-free energy drink (SFED) ingestion on corticomotor excitability and plasticity. Fourteen college students consumed a commercially available SFED or a “dummy” drink. By using Transcranial magnetic Stimulation (TMS) we investigated resting motor threshold (RMT), motor evoked potential (MEP) amplitude and cortical silent period (CSP). Paired-pulse stimulation was used to assess short interval intracortical inhibition (SICI) and intracortical facilitation (ICF). Sensorimotor integration was investigated with the short- and long-afferent inhibition paradigms (SAI and LAI). Cortical plasticity was studied with the paired associative stimulation (PAS) paradigm. In addition, we examined the effect of SFED on simple reaction time (RT), pre-movement facilitation and post-exercise facilitation (PEF). SFED consumption decreased ICF, shortened RT, increased pre-movement facilitation and PEF of the motor evoked potentials. These results demonstrate that SFED consumption induced a shorter RT that is paralleled by changes in cortical excitability at rest, prior and after a non-fatiguing muscle contraction. These acute changes in brain function might be of relevance in understanding the mechanisms underlying the enhancement of psychomotor performance. •The effects of energy drink intake on motor cortex physiology and behavior were examined.•Energy drink intake modulates cortical excitability.•Energy drink intake shortens simple reaction time and pre-movement facilitation of motor evoked potential.•Energy drink intake increases post-exercise facilitation of motor evoked potential.
Editor: United States: Elsevier Inc
Idioma: Inglês

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Caffeinated energy drink intake modulates motor circuits at rest, before and after a movement

Concerto, Carmen ; Infortuna, Carmenrita ; Chusid, Eileen ; Coira, Diego ; Babayev, Jacqueline ; Metwaly, Rowan ; Naenifard, Hesam ; Aguglia, Eugenio ; Battaglia, Fortunato

United States: Elsevier Inc

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