Cognitive Hyper-performance - Effects of Stimulating Substances in Chess-players

NCT ID: NCT01834547

Last Updated: 2013-04-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-05-31

Study Completion Date

2013-04-30

Brief Summary

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Effects of caffeine, methylphenidate, modafinil and placebo on cognitive performance of chess players in chess games and neuropsychiatric standardized tests. We hypothesize that substances will change cognitive performance in chess players leading to changed results in chess games and neuropsychiatric tests.

Detailed Description

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Conditions

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Cognitively Healthy Subjects Influenced by Psychoactive Drugs

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

HEALTH_SERVICES_RESEARCH

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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Methylphenidate

Methylphenidate

Group Type EXPERIMENTAL

Drugs use: methylphenidate

Intervention Type DRUG

40 mg tablets

modafinil

modafinil

Group Type EXPERIMENTAL

Drug use: modafinil

Intervention Type DRUG

40 mg tablets

caffeine

caffeine

Group Type EXPERIMENTAL

caffeine

Intervention Type DRUG

400 mg

placebo

placebo

Group Type PLACEBO_COMPARATOR

placebo

Intervention Type DRUG

placebo

Interventions

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Drugs use: methylphenidate

40 mg tablets

Intervention Type DRUG

Drug use: modafinil

40 mg tablets

Intervention Type DRUG

caffeine

400 mg

Intervention Type DRUG

placebo

placebo

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* male
* 18-60 years old
* existence of ELO-number

Exclusion Criteria

* physical diseases (e.g. diabetes mellitus, etc.) with necessity of using prescription drugs
* psychiatric diseases (e.g. psychosis, bipolar disorders, etc.) with necessity of using prescription drugs
* addiction of psychoactive substances
* smoker or quitter (\< 5 years)
* use of more than 5 cups of coffee per day
* irregular day-night-rhythm (e.g. shift workers)
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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K. Lieb

OTHER

Sponsor Role lead

Responsible Party

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K. Lieb

Prof. Dr. med. K. Lieb

Responsibility Role SPONSOR_INVESTIGATOR

Locations

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Department of Psychiatry and Psychotherapy

Mainz, , Germany

Site Status

Countries

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Germany

Other Identifiers

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1234

Identifier Type: -

Identifier Source: org_study_id

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