Effects of mental workload and caffeine on catecholamines and blood pressure compared to performance variations

Papadelis, Christos; Kourtidou‐Papadeli, Chrysoula; Vlachogiannis, Emmanouil; Skepastianos, Petros; Bamidis, Panagiotis D.; Maglaveras, Nikos; Pappas, Kosmas

doi:10.1016/s0278-2626(02)00530-4

Cited by 31 publications

(23 citation statements)

References 30 publications

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“…On one hand, it is the severity of dopaminergic neurotransmission by the antagonistic effect of caffeine on the A 1 and A 2A receptors, on the other hand, the inhibition of neuronal DA reuptake by bupropion that potentiates the DA signaling in the CNS. At the same time, both substances also increase noradrenergic neurotransmission[47,60]. Kale and Addepalli[32] in their research on mice, where bupropion and caffeine at doses of 5 mg/kg each have been co-administered, also observed a statistically significant reduction in the immobility time of animals in the FST and in the tail suspension test.…”

mentioning

confidence: 94%

The influence of caffeine on the activity of moclobemide, venlafaxine, bupropion and milnacipran in the forced swim test in mice

et al. 2015

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confidence: 94%

The influence of caffeine on the activity of moclobemide, venlafaxine, bupropion and milnacipran in the forced swim test in mice

et al. 2015

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“…The stimulant effects of caffeine are not due to direct actions on the central nervous system, but to indirect stimulation by inducing blockade of another neuromodulator, adenosine, which usually exerts a calming effect on brain and spinal cord neurons 22 . Caffeine increases the amount of adrenaline and noradrenaline secreted by the adrenal medulla 23 and increases central noradrenaline synthesis and turnover in the cerebral cortex, consequently exerting a stimulatory effect and boosting wakefulness 24 . In a U.S. study, 41% of school-aged children were found to consume at least one caffeinated beverage per day.…”

Section: Discussionmentioning

confidence: 99%

Intake of stimulant foods is associated with development of parasomnias in children

Ruotolo

Prado

Ferreira

et al. 2015

Arq. Neuro-Psiquiatr.

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Objective To verify if nighttime feeding habits can influence parasomnia in children. Method Seven private and four public Elementary Schools took part in the study. A total of 595 Sleep Disturbance Scale for Children were distributed to the parents of children aged from 7 to 8 years. Data of dietary recall, starting time to school, physical activity, and nutritional status were studied. Results Of the 226 questionnaires completed, 92 (41%) reported parasomnia. Girls had 2.3 times more the chance to parasomnia than boys. Children who consumed stimulant foods had 2.6 times more chance to have parasomnia than those of children who consumed non-stimulant foods. There were no difference between parasomnia and no-parasomnia groups in food type (p = 0.78) or timing of last meal before bedtime (p = 0.50). Conclusion Our findings suggest that intake of stimulant foods is associated with development of parasomnia in children.

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“…Caffeine is known to cause elevations in blood pressure (James & Gregg, 2004) and elevations in catecholamines (Papadelis et al, 2003), which could result in elevated blood pressure and HR. Since guaraná extract is always delivered in combination with caffeine, it is difficult to ascertain the unique contributions of guaraná to these physiological outcomes.…”

Section: Guaranámentioning

confidence: 99%

Effect of an Energy Drink on Physical and Cognitive Performance in Trained Cyclists

Lassiter

Kammer

Burns

et al. 2012

Journal of Caffeine Research

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Dedication This work is dedicated to those who have supported me outside of my graduate studies over the last few years. My family deserves as much credit as anyone for the work generated as part of this study. Namely, Kristin Bagby, Christine Lassiter, Mechelle Lassiter, Bette Rose Ryan, and Michele Poague deserve recognition; without them I would not have been able to work as tirelessly as I have on this project. v Acknowledgements Many individuals contributed significantly to the completion of this project. Though the thesis is my own, the project is a result of a team effort. First and foremost Lynne Kammer helped me every step of the research process, from study design, to data collection, and proofreading. Zhenping Ding played another critical role in training and overseeing the completion of the biochemistry techniques used as part of this work. Assays were completed is listed last, his help on this and other projects that I have been a part of is understated and I commend him for being such a hard-working and loyal individual. My graduate studies have been made possible through the concerted efforts of the entire kinesiology staff at the University of Texas and I would like to recognize the contributions to my education made by Ivy have served as readers for my thesis and for this I owe them recognition. Lastly I would like to thank the sponsor of my research, SWSS law, and the participants who were willing to ride their bikes in the lab for the sake of expanding our scientific understanding. vi Abstract Effect of an Energy Drink on Physical and Cognitive Performance in Trained Cyclists David Gray Lassiter, MS KIN The University of Texas at Austin, 2012 Supervisor: John Ivy This study investigated the effectiveness of an energy drink (ED) in enhancing cycling time-trial performance, and cognitive performance at rest, during moderate-intensity exercise, and after exercise. The protocol was double-blind, randomized, placebo-controlled, two-period, and within-subjects. The treatments were ED containing caffeine and carbohydrate, and a caffeine-free non-caloric flavored placebo beverage (PLA). Exercise performance was measured by time to finish a simulated 35 km time-trial course. Cognitive performance was measured by a Stroop task, a tapping task, a reaction time task, and an executive function task consisting of both tapping and reaction time. The effects of ED on blood markers were also assessed. Race performance was enhanced by an average of 3% when participants had ED compared to PLA without a difference in rating of perceived exertion (RPE). Performance was improved by ED even in participants that arrived to the lab with elevated blood caffeine concentrations. Both before and after the exercise, ED resulted in more taps per second in the tapping task. After receiving ED, plasma insulin spiked, there was a fall in free fatty acids (FFA) and vii blood glucose remained unchanged. Exercise onset caused a drop in blood glucose when participants consumed ED, though glucose returned to a level that was not di...

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Effects of mental workload and caffeine on catecholamines and blood pressure compared to performance variations

Cited by 31 publications

References 30 publications

The influence of caffeine on the activity of moclobemide, venlafaxine, bupropion and milnacipran in the forced swim test in mice

The influence of caffeine on the activity of moclobemide, venlafaxine, bupropion and milnacipran in the forced swim test in mice

Intake of stimulant foods is associated with development of parasomnias in children

Effect of an Energy Drink on Physical and Cognitive Performance in Trained Cyclists

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