Muscle Fatigue
Conditions
Interventions
18 cyclists will be recruited. The experimental conditions will involve chronic supplementation of placebo (250 mg of starch) and / or caffeine (6 mg.kg body weight) in the period of 4 consecutive day
placebo / placebo (PP), placebo / caffeine (CP) and caffeine / caffeine (CC). A washout of at least 2 days (48 hours) and a maximum of 5 days between the experimental trials shall be established.
Dietary supplement
SP6.051.227
Sponsors
Universidade Federal do Rio de Janeiro (UFRJ-Campus Macaé)
Universidade Federal do Rio de Janeiro (UFRJ-Campus Macaé)
Eligibility
Sex/Gender
Male
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: Minimum experience of two years in the modality and to have been classified among the 10 first places in the categories of the tests realized in the state of Rio de Janeiro. Training frequency of at least 3 x per week including sessions of technical and physical training. Do not be users of anabolic steroids. Athletes consuming caffeine amounts ?300 mg.day (Fit et al., 2013).
Exclusion criteria
Exclusion criteria: Hypertensive athletes and those who present nausea, gastritis and osteomioarticular lesions will be excluded during the experiment.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Mean heart rate difference (analyzed by heart rate, ventilatory parameters) and output power (cycle on the cycle ergometer, athletes using caffeine or placebo). | — |
Secondary
| Measure | Time frame |
|---|---|
| Increase (10%) in blood lactate concentration, as measured by laboratory analysis after caffeine intervention and placebo. | — |
Countries
Brazil
Contacts
Public ContactAnderson;Anderson Morales;Morales
Universidade Federal do Rio de Janeiro (UFRJ-Campus Macaé);Universidade Federal do Rio de Janeiro (UFRJ-Campus Macaé)
Outcome results
None listed