Efects of caffeine ingestion on dynamic visual acuity: a placebo‑controlled, double‑blind, balanced‑crossover study in low cafeine consumers
Metadatos
Mostrar el registro completo del ítemAutor
Redondo, Beatriz; Jiménez Rodríguez, Raimundo; Molina, Rubén; Dalton, Kristine; Vera Vílchez, JesúsEditorial
Springer
Materia
Visual perception Cafeine Ergogenic efect Psychostimulants Visual function
Fecha
2021-08-22Referencia bibliográfica
Redondo, B., Jiménez, R., Molina, R. et al. Effects of caffeine ingestion on dynamic visual acuity: a placebo-controlled, double-blind, balanced-crossover study in low caffeine consumers. Psychopharmacology (2021). [https://doi.org/10.1007/s00213-021-05953-1]
Patrocinador
CRUE-CSIC agreement; Springer Nature; Universidad de Granada / CBUAResumen
Background Acute caffeine ingestion has been associated with improvements in cognitive performance and visual functioning. The main objective of this study was to determine the effects of caffeine intake on dynamic visual acuity (DVA). Methods Twenty-one low caffeine consumers (22.5 +/- 1.6 years) took part in this placebo-controlled, double-blind, and balanced crossover study. In two different days and following a random order, participants ingested either caffeine (4 mg/kg) or placebo, and DVA was measured after 60 min of ingesting the corresponding capsule. A recently developed and validated software (moV& test, V&mp Vision Suite, Waterloo, Canada) was used to assess DVA. Results We found a greater accuracy for both the horizontal and random motion paths of DVA after caffeine ingestion (p < 0.001 and p = 0.002, respectively). In regard to the speed of the response, our data revealed that caffeine intake was associated with a faster reaction time for horizontally (p = 0.012) but not for randomly (p = 0.846) moving targets. Also, participants reported higher levels of perceived activation after consuming caffeine in comparison to placebo (p < 0.001). Conclusions Our data suggest that caffeine intake (i.e., a capsule containing 4 mg/kg) has an ergogenic effect on DVA, which may be of special relevance in real-word contexts that require to accurately and rapidly detect moving targets (e.g., sports, driving, or piloting).