Not applicable (sprint performance in healthy track-and-field athletes)
Conditions
Interventions
Capsulated caffeine or placebo (maltitol) at 1 mg/kg is acutely consumed 1 h before sprint running. Caffeine condition ->
at least 48-h wash-out period ->
placebo condition
Capsulated caffeine or placebo (maltitol) at 1 mg/kg is acutely consumed 1 h before sprint running. Placebo condition ->
caffeine condition
Sponsors
Ritsumeikan University
Eligibility
Sex/Gender
Male
Inclusion criteria
Inclusion criteria: Sprinters, hurdlers, or jumpers engaged in at least 2 hours of daily training for 5 days per week. Athletes who can complete all-out sprint running.
Exclusion criteria
Exclusion criteria: An injury making it difficult to perform sprint running; A mental disorder or cardiovascular disease; Smoking within the past year; An allergy to caffeine or the prescribed diet
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 60-m sprint time at 1 h after ingesting caffeine | — |
Secondary
| Measure | Time frame |
|---|---|
| 60-m sprint velocity and reaction time at the start at 1 h after ingesting caffeine, plasma caffeine concentration before consuming caffeine and immediately after sprint running, and caffeine-induced side effects immediately and 24 h after sprint running | — |
Countries
Japan
Contacts
Public ContactTakeshi Hashimoto
Ritsumeikan University Faculty of Sport and Health Science
Outcome results
None listed