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Effects of Caffeine in Hydration and Energy Metabolism

NCT01477294 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2011-11-22

No results posted yet for this study

Summary

The main purposes of this randomized cross-over trial are to characterize and compare the effects of a moderate dose of caffeine intake in healthy physically active males on hydration and energy metabolism specifically:

1. Total body water and its compartments (intracellular and extracellular) assessed by by dilution techniques, and hydration state by urine specific gravity;
2. Total energy expenditure by double labeled water, resting energy expenditure by indirect calorimetry, and physical activity energy expenditure;
3. Energy expenditure in physical activity of daily living, in particular duration and intensity of activity.
4. If the changes occurred between placebo and caffeine ingestion on the main outcomes were dependent on specific covariates, namely body composition and dietary intake.

Conditions

  • Caffeine

Interventions

DRUG

Caffeine

5 mg/ kg of body weight (capsules), twice a day (morning and afternoon), during 4 days.

DRUG

Placebo

Malt dextrin (5 mg/kg body mass) twice a day during 4 days

Sponsors & Collaborators

  • Technical University of Lisbon

    lead OTHER

Principal Investigators

  • Analiza M Silva, PhD · Faculty of Human Kinetics, Technical University of Lisbon

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
39 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2010-01-31
Primary Completion
2010-03-31
Completion
2010-03-31

Countries

  • Portugal

Study Locations

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Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01477294 on ClinicalTrials.gov