Counteracting driver sleepiness: effects of napping, caffeine, and placebo
JA Horne, LA Reyner - Psychophysiology, 1996 - Wiley Online Library
Sleepy drivers should “take a break,” but the efficacy of feasible additional countermeasures
that can be used during the break is unknown. We examined a shorter than 15 min nap, 150
mg of caffeine in coffee, and a coffee plalcebo, each given randomly across test sessions to …
that can be used during the break is unknown. We examined a shorter than 15 min nap, 150
mg of caffeine in coffee, and a coffee plalcebo, each given randomly across test sessions to …
The expected drug and its expected effect interact to determine placebo responses to alcohol and caffeine
MT Fillmore, LE Mulvihill, M Vogel-Sprott - Psychopharmacology, 1994 - Springer
This study tested placebo responses in psychomotor performance when caffeine or alcohol
was expected. Fifty male university students were assigned to one of four placebo groups or
to a no-treatment control group. Two groups received placebo caffeine and two received …
was expected. Fifty male university students were assigned to one of four placebo groups or
to a no-treatment control group. Two groups received placebo caffeine and two received …
The effect and safety of an ephedrine/caffeine compound compared to ephedrine, caffeine and placebo in obese subjects on an energy restricted diet. A double blind …
A Astrup, L Breum, S Toubro, P Hein… - International journal of …, 1992 - europepmc.org
The sympathomimetic agent ephedrine has potent thermogenic and anti-obesity properties
in rodents. The effect is markedly enhanced by caffeine, while caffeine given alone has no
effect. This study was undertaken to find out if a similar weight reducing synergism between …
in rodents. The effect is markedly enhanced by caffeine, while caffeine given alone has no
effect. This study was undertaken to find out if a similar weight reducing synergism between …
Caffeine: a double-blind, placebo-controlled study of its thermogenic, metabolic, and cardiovascular effects in healthy volunteers
A Astrup, S Toubro, S Cannon, P Hein… - … American journal of …, 1990 - academic.oup.com
In humans caffeine stimulates thermogenesis by unknown mechanisms and its effect on
body weight has not been studies. The effect of placebo and 100, 200, and 400 mg oral
caffeine on energy expenditure, plasma concentrations of substrates and hormones, blood …
body weight has not been studies. The effect of placebo and 100, 200, and 400 mg oral
caffeine on energy expenditure, plasma concentrations of substrates and hormones, blood …
Effects of oral caffeine on postdural puncture headache. A double-blind, placebo-controlled trial.
WR Camann, RS Murray, PS Mushlin… - Anesthesia and …, 1990 - europepmc.org
Forty postpartum patients with postdural puncture headache (PDPH) were randomly
assigned to receive oral caffeine (300 mg) or a placebo. Intensity of headache, quantitated
using a visual analogue pain scale (VAS), was assessed immediately before drug …
assigned to receive oral caffeine (300 mg) or a placebo. Intensity of headache, quantitated
using a visual analogue pain scale (VAS), was assessed immediately before drug …
[PDF][PDF] Placebo effects of caffeine on cycling performance
CJ Beedie, EM Stuart, DA Coleman… - Medicine and Science …, 2006 - researchgate.net
ABSTRACT BEEDIE, CJ, EM STUART, DA COLEMAN, and AJ FOAD. Placebo Effects of
Caffeine on Cycling Performance. Med. Sci. Sports Exerc., Vol. 38, No. 12, pp. 2159–2164,
2006. Purpose: The placebo effectVa change attributable only to an individuals belief in the …
Caffeine on Cycling Performance. Med. Sci. Sports Exerc., Vol. 38, No. 12, pp. 2159–2164,
2006. Purpose: The placebo effectVa change attributable only to an individuals belief in the …
Caffeine can decrease insulin sensitivity in humans
GB Keijzers, BE De Galan, CJ Tack, P Smits - Diabetes care, 2002 - Am Diabetes Assoc
Comparing the benefits of caffeine, naps and placebo on verbal, motor and perceptual memory
Caffeine, the world's most common psychoactive substance, is used by approximately 90%
of North Americans everyday. Little is known, however, about its benefits for memory.
Napping has been shown to increase alertness and promote learning on some memory …
of North Americans everyday. Little is known, however, about its benefits for memory.
Napping has been shown to increase alertness and promote learning on some memory …
Efficacy and safety of acetaminophen, aspirin, and caffeine in alleviating migraine headache pain: three double-blind, randomized, placebo-controlled trials
RB Lipton, WF Stewart, RE Ryan, J Saper… - Archives of …, 1998 - jamanetwork.com
Objective To assess the effectiveness of the nonprescription combination of acetaminophen,
aspirin, and caffeine in alleviating migraine headache pain. Design Three double-blind,
randomized, parallel-group, single-dose, placebo-controlled studies. Setting Private …
aspirin, and caffeine in alleviating migraine headache pain. Design Three double-blind,
randomized, parallel-group, single-dose, placebo-controlled studies. Setting Private …
The effects of a caffeine placebo and suggestion on blood pressure, heart rate, well-being and cognitive performance
H Walach, S Schmidt, T Dirhold, S Nosch - International Journal of …, 2002 - Elsevier
We studied the effect of suggestion and different instructions in a balanced placebo design.
One hundred and fifty-nine subjects were randomized into a 2* 4 factorial design. All
subjects except a control group received a caffeine placebo. Subjects were randomized to a …
One hundred and fifty-nine subjects were randomized into a 2* 4 factorial design. All
subjects except a control group received a caffeine placebo. Subjects were randomized to a …
