Caffeine, Placebo
Conditions
Keywords
exercise performance, fatigue index
Brief summary
The purpose of this study was to examine the impact of caffeinated chewing gum on the physical performance of elite ice hockey players in a partial sleep deprivation state.
Detailed description
This study used a randomisation crossover design with a single-blind, double-blind experimental design. The participants were randomly assigned to either a caffeinated chewing gum trial (CAF) or a placebo trial (PL).
Interventions
DIETARY_SUPPLEMENTcaffeinate chewing gum
participants either chewed caffeinated gum (CAF) containing 3 mg/kg caffeine or a caffeine-free placebo gum (PLA) for 10 minutes prior to undertaking a series of tests on-ice and off-ice.
Sponsors
National Taiwan Sport University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)
Masking description
The order of participants was determined through the use of computerized randomization software
Eligibility
Sex/Gender
MALE
Age
20 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* 1\. 6 years of professional ice hockey training, * 2\. 6 months of continuous training, * 3\. 3 months of recovery from sports injuries such as strains and sprains
Exclusion criteria
* 1\. non-specialised ice hockey player. * 2\. has not trained regularly for the past 6 months. * 3\. has recovered from an athletic injury. * 4\. have been recovering from a sports injury for less than 3 months, or have epilepsy, hypertension, hyperlipidemia, heart disease, arthritis, osteoporosis, brain injury, or a history of caffeine allergy.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| counter-movement jump | 15 minutes after intervention | jump height |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 35-metre sprint | 15 minutes after intervention | complete time (seconds) |
Countries
Taiwan
Outcome results
None listed