Cardiovascular responses to the combination of caffeine and mental arithmetic, cold pressor, and static exercise stressors
France C, Ditto B
Psychophysiology · 28 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 1992-05-01 · Psychophysiology · vol. 29 · número 3 · págs. 272–282
- Editorial
- Wiley
- Citado
- 50 citas · más que el 89% de estudios similares · 2.5× el promedio de su campo
- Referencias
- 36 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Heart Rate Variability and Autonomic Control · Blood Pressure and Hypertension Studies
- Palabras clave
- caffeine, mental arithmetic, cold pressor test, static exercise, cardiovascular response, blood pressure, heart rate, finger temperature, respiratory sinus arrhythmia, forearm blood flow, anxiety, anger, sympathetic nervous system, beta-adrenergic activity
- MeSH
- humans, caffeine, pain measurement, double-blind method, sensory thresholds, arousal, blood pressure, heart rate, isometric contraction, adolescent, adult, male, hemodynamics
2 autores
- Christopher R. France🇺🇸 · autor de correspondenciaOhio University
- Blaine Ditto🇨🇦McGill University
Resumen
El texto original del estudio, en el idioma en que se publicó.
The present study examined cardiovascular responses to the combination of caffeine (250mg) and mental arithmetic, cold pressor, and static exercise stressors in 48 healthy males. Subjects were tested in a within-subject, placebo-controlled, double-blind design. Repeated measurements of heart rate, finger temperature, respiratory sinus arrhythmia, forearm blood flow, and blood pressure were obtained during a pre-drug resting baseline, a post-drug resting baseline, the three stressor tasks, and a recovery baseline. The primary analyses were 2(Drug) x 5(Period) x 6(Stress Order) MANCOVAs using pre-drug baseline values as covariates. Significant period main effects were observed for all measures. Significant drug main effects were observed for blood pressure, finger temperature, respiratory sinus arrhythmia, and forearm blood flow. The significant changes in blood pressure and finger temperature produced by caffeine combined in an additive fashion with the effects produced by the stressors. Significantly greater increases in forearm blood flow and heart rate during mental arithmetic on the caffeine day suggested a potentiation of sympathetic, beta-adrenergic activity. Questionnaires administered during baseline periods to assess psychological responses to stress and caffeine revealed a potentiation of anxiety and anger responses to stress on the caffeine day.
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