The effect of caffeine on handwriting movements in skilled writers
| Autor: | Susanne Walitza, Oliver Tucha, Dorota Stasik, Thomas-A. Sontag, Lara Mecklinger, Klaus W. Lange |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Handwriting Biophysics Experimental and Cognitive Psychology Placebo Developmental psychology chemistry.chemical_compound Physical medicine and rehabilitation Double-Blind Method Caffeine medicine High doses Reaction Time Humans Orthopedics and Sports Medicine Fine motor Psychomotor learning Cross-Over Studies Dose-Response Relationship Drug General Medicine Crossover study Biomechanical Phenomena chemistry Female Psychology Psychomotor Performance |
| Zdroj: | Human movement science. 25(4-5) |
| ISSN: | 0167-9457 |
| Popis: | In laboratory tasks, caffeine has been shown to improve psychomotor performance. The aim of the present experiment was to assess the effects of caffeine on a skilled everyday life task in habitual caffeine consumers. The assessment of handwriting movements of 20 adults was performed following the administration of 0mg/kg (placebo), 1.5mg/kg, 3.0mg/kg or 4.5mg/kg of caffeine. A digitising tablet was used for the assessment of fine motor movements. Participants were asked to perform a simple writing task. Kinematic analysis of handwriting movements showed that, in comparison to placebo administration, high doses of caffeine (i.e., 4.5mg/kg) can produce improvements in handwriting as indicated by more fluent handwriting movements as well as an increase in maximum velocity and maximum positive and negative accelerations. The results suggest that higher doses of caffeine can enhance psychomotor performance. |
| Databáze: | OpenAIRE |
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