Caffeine, Placebo
Conditions
Brief summary
Caffeine supplementation has been recognized such as an useful strategy for improving performance in intermittent sports, however caffeine ingestion in futsal has been barely studied. In this randomized placebo-controlled study, we investigated the effects of acute caffeine supplementation in improving neuromuscular performance and physical match activity in futsal players.
Detailed description
To date, no previous investigation has studied the effect of acute caffeine ingestion on futsal performance during futsal-specific testing and during a simulated match. Therefore, the aim of this investigation was to establish the effects of acute caffeine intake on futsal-specific tests (e.g. futsal kicking velocity) and match-play running performance in male futsal players.
Interventions
DIETARY_SUPPLEMENTCaffeine
Gelatine capsule with caffeine (3 mg/kg body mass of caffeine) (Bulk Powders, London, United Kingdom). The capsule containing the treatment was ingested with 150 mL of water 60 minutes before the onset of the experiment to allow substance absorption.
DIETARY_SUPPLEMENTPlacebo
Gelatine capsule with placebo (Cellulose; Guinama, Valencia, Spain). The capsule containing the treatment was ingested with 150 mL of water 60 minutes before the onset of the experiment to allow substance absorption.
Sponsors
Universidad Rey Juan Carlos
Universidad Miguel Hernandez de Elche
University of Beira Interior
Universidad Francisco de Vitoria
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
* Sub-elite men futsal players
Exclusion criteria
* Intolerance to caffeine, * Suffering from any chronic pathology or an injury in the month prior to the investigation * Use of medicines or dietary supplements during the study.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes in futsal match-play demands (m/min) | 48-hours | Using a wireless inertial movement unit system |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Changes in maximal jump height (cm) | 48-hours | Infrared beam jump system |
| Changes in 20-m sprint test (s) | 48-hours | Time to complete 10-m and 20-m sprints using photocell timing gates |
| Futsal kicking velocity and accuracy test (km/h) | 48-hours | Throwing velocity using a radar gun |
Countries
Spain
Outcome results
None listed