Caffeine Intake and Additive Effects on Cognition

NCT ID: NCT02647567

Last Updated: 2016-01-06

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 20 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-05-31
• Study Completion Date: 2015-12-31

Brief Summary

Caffeine is a methylxanthine commonly consumed by the population for their psychostimulant properties, and their intake when in moderate doses seem to produce positive effects on stress, mood and memory. So, understanding that a positive effect of aerobic exercise can be displayed also on cognition, as caffeine, when in proper proportions, the investigators do not know if the joining of the two strategies into a single activity would be able to promote additional effects enhancing cognitive processes related to memory, attention, and motor reaction time.

Detailed Description

Determine if 500 mg of caffeine can generate additional effects to 30 minutes of aerobic exercise enhancing cognitive memory tasks (Rey Auditory Verbal Learning Test - RAVLT), attention (sustained attention span; working speed; Percentual of errors by confusion) and simple reaction time (SRT).

Conditions

Healthy

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Blinding Strategy: DOUBLE

Study Groups

Caffeine Intake

The experimental group ingest 500 mg of caffeine before (60 min) aerobic exercise (procedure double blind), and perform a battery of neuropsychological and psychomotor tests. 1 min and 30 min after the exercise the subjects perform a new battery of neuropsychological and psychomotor tests.

Group Type: EXPERIMENTAL

Caffeine Intake

Intervention Type: OTHER

The experimental group ingest 500 mg of caffeine before (60 min) aerobic exercise (procedure double blind), and perform a battery of neuropsychological and psychomotor tests. 1 min and 30 min after the exercise the subjects perform a new battery of neuropsychological and psychomotor tests.

Placebo Intake

The control group ingest 500 mg of placebo before (60 min) aerobic exercise (procedure double blind), and perform a battery of neuropsychological and psychomotor tests. 1 min and 30 min after the exercise the subjects perform a new battery of neuropsychological and psychomotor tests.

Group Type: PLACEBO_COMPARATOR

Placebo Intake

Intervention Type: OTHER

The control group ingest 500 mg of placebo before (60 min) aerobic exercise (procedure double blind), and perform a battery of neuropsychological and psychomotor tests. 1 min and 30 min after the exercise the subjects perform a new battery of neuropsychological and psychomotor tests.

Interventions

Caffeine Intake

The experimental group ingest 500 mg of caffeine before (60 min) aerobic exercise (procedure double blind), and perform a battery of neuropsychological and psychomotor tests. 1 min and 30 min after the exercise the subjects perform a new battery of neuropsychological and psychomotor tests.

Intervention Type: OTHER

Placebo Intake

The control group ingest 500 mg of placebo before (60 min) aerobic exercise (procedure double blind), and perform a battery of neuropsychological and psychomotor tests. 1 min and 30 min after the exercise the subjects perform a new battery of neuropsychological and psychomotor tests.

Intervention Type: OTHER

Other Intervention Names

Caffeine; Placebo

Eligibility Criteria

Inclusion Criteria

• Fighting men
• Low levels of consumption of caffeine daily

Exclusion Criteria

• Use more than 400 mg caffeine day
• Mental diseases
• Cognitive deficits

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 45 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Universidade Federal do Rio de Janeiro

OTHER

Sponsor Role: lead

Responsible Party

Alberto Souza de Sá Filho

Doctorade in Mental Health

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Sérgio Machado, PhD

Role: STUDY_DIRECTOR

Salgado de Oliveira University

Other Identifiers

UNIVERSO-03

Identifier Type: -

Identifier Source: org_study_id