The use of tramadol is a controversial topic in cycling. In order to provide novel evidence on this issue, we tested 29 participants pre-loaded cycling time trial (TT; 20-min TT preceded by 40-min constant work-rate at 60% the VO2max) after ingesting 100 mg (vs placebo and paracetamol (1.5 g)). Participants performed Psychomotor Vigilance Task (PVT) rest Sustained Attention Response (SART) duri...

Introduction: Psychomotor performance task is used to assess the arousal and cognitive functions of the central nervous system. Alternatively, human visual working memory reflects the capability of the individual’s short-term memory. Psycho-mental stimuli are linked to the stimulation of Malondialdehyde (MDA) formations. Citicoline is a nootropic nucleotide agent with a favorable effect on the ...

Knowledge of placebo and nocebo effects is essential to identify their influence on the results in clinical practice and clinical trials, and thereby properly interpret their results. It is known that the gold standard of clinical trials research is the double-blind, placebo-controlled, randomized clinical study. The objective of this review is to distinguish specific from non-specific effects,...

The potential of placebo treatments to alleviate a variety of medical conditions has long been recognised. Although the placebo effect is widely known, the physiological mechanisms underlying this phenomenon are not well understood. This review focuses on the existing evidence for placebo responses in different neurological conditions, including pain, Parkinson's disease, depression, sleep and ...

diabetes is a common metabolic disease in the world that has many adverse effects. olibanum gum resin (from trees of the genus boswellia) has traditionally been used in the treatment of various diseases such as diabetes. the aim of this study was the comparison of olibanum gum resin effect with placebo on the treatment of type 2 diabetes. inclusion criteria was diabetic patients with fasting bl...

background: exercise and consumption of green tea affect the aging process. however, the effect of exercise training combined with green tea extract on leukocyte telomere length, quality of life (qol) and body composition in aging has so far been unclear and inconsistent. objective: the aim of the present study was to determine the effectiveness of aerobic training intervention and green tea ex...

Lack of hard clinical endpoints is an essential problem in schizophrenia research. Disease state and treatment outcomes are measured using rating scales, e.g. Positive and Negative Syndrome Scale (PANSS). However, the PANSS score cannot always differentiate between placebo and drug treatment, even for established antipsychotics. The goal of this study was to identify the individual items of PAN...

This comprehensive review provides an overview about placebo and nocebo phenomena in antidepressant trials. Improvements in the placebo groups may partly be explained through methodological issues such as natural course of depression and regression to the mean, but also fundamentally reflect investigators' and participants' expectations. A meta-analysis by our group of 96 randomized placebo-con...