Caffeine, Placebo
Conditions
Keywords
exercise performance, fatigue index, α amylase
Brief summary
20 trained sprinter 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 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes. The outcomes are Running-Based Anaerobic Sprint Test and 400-meter sprint test was performed.
Detailed description
The purpose of this study was to investigate the effect of caffeinated chewing gum on 400-meter sprint performance. 20 trained sprinter 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 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes. After rested for 15 minutes, the participants underwent a Running-Based Anaerobic Sprint Test. After a 30-minute break, a 400-meter sprint test was performed. The blood lactate concentration were collected before and after 400-meter sprint from finger. Saliva samples were predicted to be collected before chewing gum, before the RAST, and after a 400-meter sprint. Saliva samples will be analyzed for caffeine and α-amylase concentrations in saliva.
Interventions
DIETARY_SUPPLEMENTcaffeine
The participants chewing either caffeine Gum (CAF trial, containing 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes. After rested for 15 minutes, the participants underwent tests.
Sponsors
National Science and Technology Council
Chih-Hui Chiu
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Eligibility
Sex/Gender
MALE
Age
20 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* 6 years of professional short sprinting training * 6 months of ongoing training, and * 3 months of recovery from sports injuries such as strains and sprains.
Exclusion criteria
* Non-specialized sprinters. * has not trained regularly for the past 6 months. * has recovered from an athletic injury. * less than 3 months of recovery from a sports injury, or participants with epilepsy, hypertension, hyperlipidemia, heart disease, arthritis, osteoporosis, brain injury, or a history of caffeine allergy.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Running-Based Anaerobic Sprint Test (RAST) | 15 minutes after intervention | Measure the fatigue index (%) |
| 400-meter sprinting | 30 minutes after RAST | Measure the 400-meter completion time (seconds) |
Countries
Taiwan
Outcome results
None listed