Healthy Clinical Trial - Modification of Alternative Reward Cue Reactivity

Status Completed

Clinical Trial Summary

This study investigates the mechanisms, through which physical exercise impacts positively on abstinence in tobacco use disorder, with fMRI and behavioral tests.

Clinical Trial Description

This study will test the hypothesis that physical exercise training modifies alternative reward cue reactivity and cognitive control in tobacco use disorder and that these modifications mediate the effect of exercise on abstinence. Continued physical exercise training was shown to reduce tobacco consumption and prevent relapse in tobacco use disorder (TUD). However, the psychological and neural mechanisms through which exercise training exerts its effects on tobacco consumption are not clear. The aim of this project is to identify the effects of a 12-week aerobic exercise training in TUD and to test how these exercise-related changes may mediate the effect of exercise training on abstinence. Investigations will focus on two potential mechanisms of regaining control: (1) modifications of tobacco and alternative reward cue reactivity and (2) improvement of cognitive control. Two aspects of cognitive control will be addressed: inhibitory control and cognitive down-regulation of craving. It is expected, first, that exercise training (compared to standard treatment) leads to desensitization towards tobacco cues and sensitization towards alternative reward cues, reflected in altered craving and neural (fMRI) cue reactivity. Second, it is expected that exercise training will lead to increased cognitive control (i.e., inhibitory control and cognitive down-regulation of craving), reflected in increased activation of prefrontal control regions (fMRI). Third, it is expected that effects of exercise on abstinence will be mediated by sensitization towards alternative reward cues and enhanced cognitive control. In an exploratory manner, gender differences in the effects of exercise training will be studied. Understanding the psychological and neural underpinnings will help to optimize and individualize exercise trainings in TUD. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04251936
Study type	Interventional
Source	Charite University, Berlin, Germany
Contact
Status	Completed
Phase	N/A
Start date	February 1, 2020
Completion date	June 30, 2023

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Modification of Alternative Reward Cue Reactivity and Cognitive Control Through Physical Activity in Human Tobacco Use Disorder

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms