Beta-alanine, Placebo
Conditions
Brief summary
Beta-alanine is considered as ergogenic aids with good to strong evidence for improving sports performance in specific sports context scenarios. However, most of the studies has been realized in endurance, with limited evidence in intermittent sports, especially in racket sports. Thus, the aim of this study was to explore the effects of 4-weeks ingestion of beta-alanine on neuromuscular performance in well-trained tennis players.
Detailed description
Fourteen tennis players (23.3 ±3.7 years) between 50-250 national tennis ranking participated in this study. Participants were randomly divided into two groups that realized a neuromuscular battery after beta-alanine (4.8 gr/daily during 4-weeks) or placebo (i.e., fructose) (4.8 grams/daily during 4-weeks). Before and after the supplementation period tennis performed a neuromuscular test battery in a tennis court consisted in different test such as; serve velocity, countermovement jump, isometric handgrip strength, 10-m sprint, modified 5-0-5 agility test and repeated sprint ability. After 48 h of the realization of neuromuscular test battery, tennis players performed VO2max consumption test (i.e., treadmill).
Interventions
DIETARY_SUPPLEMENTBeta-alanine supplementation
In a randomized order, two groups (n=7) was randomly assigned to beta-alanine and placebo during a 4-weeks period
Sponsors
University of Seville
University of Greenwich
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
* Well-trained tennis players, between 18-35 years old (50-200 between tennis ranking)
Exclusion criteria
* Suffering from any chronic pathology or an injury in the month prior to the investigation. * Intolerance to beta-alanine ingestion * Amateur tennis players.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Repeated sprint ability test. | 4-weeks | Infrared photocells system (Microgate, Italy) |
| VO2 max treadmill test | 4-weeks | Using VO2 max analyzer (Ergostik, Geratherm Respiratory, Ergostik, Geratherm, Germany) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 10m sprint | 4-weeks | Infrared photocells system (Microgate, Italy) |
| Serve velocity | 4-weeks | Stroke velocity radar gun (Radar Pocket, South Korea) |
| Modified agility test 5-0-5 | 4-weeks | Infrared photocells system (Microgate, Italy) |
| Isometric handgrip strength | 4-weeks | Hand held dynamometer (Takei, Japan) |
| Contermovement Jump | 4-weeks | Contact Jump (Chronojump, Spain) |
Countries
Spain
Outcome results
None listed