Caffeine, Placebo
Conditions
Brief summary
15-20 trained bodybuilding athletes were divided into caffeine gum trial (CAF) and placebo trial (PL) with a randomized, double-blind study design. The participants chewing either caffeine Gum (CAF trial, containing 5 mg/kg of caffeine) or placebo gum (PL) for 10 minutes. After rested for 15 minutes, Participants used the bicycle to adjust the pedal resistance and speed according to their own feelings until they were dehydrated to 2% of their original body weight.
Detailed description
The purpose of this study was to investigate the effect of caffeinated chewing gum on dehydration ability in bodybuilding athletes. Methods: 15-20 trained bodybuilding athletes were divided into caffeine gum trial (CAF) and placebo trial (PL) with a randomized, double-blind study design. The participants chewing either caffeine Gum (CAF trial, containing 5 mg/kg of caffeine) or placebo gum (PL) for 10 minutes. After rested for 15 minutes, Participants used the bicycle to adjust the pedal resistance and speed according to their own feelings until they were dehydrated to 2% of their original body weight. Record time from exercise to completion of dehydration, heart rate, HRV, energy expenditure, fat oxidation rate and carbohydrate oxidation rate.
Interventions
DIETARY_SUPPLEMENTcaffeine
The participants chewed either caffeine gum (5 mg/kg for 10 minutes per chew) or a placebo (10 minutes per chew, using regular gum).
Sponsors
Chih-Hui Chiu
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Masking description
Using placebo chewing gum
Intervention model description
The participants were divided into caffeine gum trial (CAF) and placebo trial (PL) with a randomized, double-blind study design.
Eligibility
Sex/Gender
MALE
Age
20 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* having won the top 8 places in a national competition, * having no cardiovascular or joint diseases * being an adult male
Exclusion criteria
* no top 8 finishes at national level * cardiovascular or joint disease, or any other condition that could be impaired by exercise * female and underage participants * previous caffeine allergy
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| dehydration speed | 15 minutes after intervention | The participants start dehydration until dehydrated to 2% of their original body weight. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| energy expenditure | 15 minutes after intervention | The energy expenditure during dehydration |
Countries
Taiwan
Outcome results
None listed