نتایج جستجو برای: subjects received caffeine or placebo in a double
تعداد نتایج: 20511839 فیلتر نتایج به سال:
RATIONALE Apnea of prematurity is a common condition that is usually treated with caffeine, an adenosine receptor blocker that has powerful influences on the central nervous system. However, little is known about the long-term effects of caffeine on sleep in the developing brain. OBJECTIVES We hypothesized that neonatal caffeine use resulted in long-term abnormalities in sleep architecture an...
Background: Acute effects of caffeinated and non-caffeinated cocoa on mood, motivation, and cognitive function are not well characterized. The current study examined the acute influence of brewed cocoa, alone and with supplemental caffeine, on attention, motivation to perform cognitive tasks and energy and fatigue mood states. Methods: A randomized, double-blinded, within-subjects crossover tri...
1. The aim of this study was to determine the effects of caffeine on haemodynamic and neurohumoral responses to meal ingestion in elderly patients with a history of symptomatic postprandial hypotension. 2. Postprandial hypotension is a common disorder of blood pressure regulation in the elderly, associated with falls and syncope. The pathophysiological mechanism is thought to be related to impa...
introduction: hypertension as a major coronary artery disease (cad) risk factor is more prevalent in iran. in recent years, the effect of antioxidants in reducing cad and their risk factors has been considered. therefore, this triple blind placebo-controlled clinical trial was performed to determine the effects of antioxidant vitamin e on blood pressure in patients with mild hypertension. mater...
despite preliminary evidence, the role of probiotic and synbiotic in treatment of the atopic dermatitis has shown varying results. we aimed to evaluate whether synbiotic supplementation decrease severity of atopic dermatitis (ad) in childhood. in a randomized double blind-placebo controlled trial, we evaluated the synbiotic supplementation efficiency on the treatment of atopic dermatitis. infan...
Methods The objective of this study was to investigate if caffeine can influence lipid profile in trained cyclists. 19 trained and familiarized male cyclists with a mean age of 35 ± 8.1 were randomly assigned to placebo (n=7) and caffeine groups (n=12). 30 minutes before the exercise each member of the caffeine group received 5mg/Kg of caffeine. All participants underwent the same pre-test meal...
Background: Caffeine is frequently consumed by athletes to maintain alertness in conditions of sleep loss. However, the effect caffeine ingestion during total deprivation aerobic exercise remains questionable. Objectives: The present study aimed assess effects repeated intake low-dose a night on endurance performance and psychological states. Methods: Twelve recreational runners performed four ...
The effect of propranolol was studied on 23 dental phobics in a double-blind, placebo-controlled clinical trial involving actual dental treatment. The subjects were selected because they showed high physiological reactivity in the dental situation. Twelve subjects received the test drug and 11 subjects received the placebo at individualized doses of either 80 or 120 mg. A significant difference...
background and purpose: the goal of asthma therapy is to achieve clinical control and near normal lung functions. many patients with moderate persistent asthma fail to achieve this goal with a low dose of inhaled corticosteroid (ïçs) plus long-acting β2 agonist (lâbâ). ïn the present study, we have checked whether another controller medication (in the form of ginger capsule) add on to ïçslow do...
Heat and hypoxia exacerbate central nervous system (CNS) fatigue. We therefore investigated whether essential amino acid (EAA) and caffeine ingestion attenuates CNS fatigue in a simulated team sport-specific running protocol in a hot, hypoxic environment. Subelite male team sport athletes (n = 8) performed a repeat sprint running protocol on a nonmotorized treadmill in an extreme environment on...
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