Exercise Performance
Conditions
Keywords
performance, polyphenols, nutrition, sports
Brief summary
In this study, the effect of citrus extract on exercise performance will be investigated. The study consists of three groups: one group will receive a high dose citrus extract, one group will receive a low dose citrus extract and the last group will receive a placebo. After four and eight weeks the effects on performance are measured through a Wingate cycling test. It is expected that exercise performance will increase in the citrus extract groups, compared to the placebo group.
Interventions
DIETARY_SUPPLEMENTcitrus extract
Participants will receive either a low or high dose citrus extract
OTHERplacebo
participants will receive 500mg of maltodextrin
Sponsors
BioActor
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy idividuals * Participants are amateur or (semi-) professional athletes in resistance or interval sports (engage in \>4 hours of intense physical activity per week).
Exclusion criteria
* Use of creatine supplements and/or anabolic steroids. * Allergy to test product/placebo * Allergy to citrus fruits * BMI lower than 18 or higher than 30 * Recent muscle injury in less than one month before the start of the study. * Cardiovascular complications * Use of medication that may interfere with the study results * Administration of investigational drugs or participation in any scientific intervention study which may interfere with this study (to be decided by the principle investigator), in the 180 days prior to the study. * Abuse of products; alcohol (\> 20 alcoholic units per week) and drugs.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| peak force output Wingate | 8 weeks | Peak force output in Watts during a high intensity repeated sprint cycling exercise |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| jumping height | 8 weeks | jumping height in cm measured during a vertical jump exercise |
| peak force output Handgrip | 8 weeks | Peak force output in Watts during a handgrip strength test |
| anaerobic capacity | 8 weeks | total amount of power (W) generated in the first 30 seconds of the the triple Wingate cycle test |
| running time | 8 weeks | running time in minutes and seconds measured over 1600m |
| force output Jump | 8 weeks | force output in W measured during a vertical jump exercise |
Other
| Measure | Time frame | Description |
|---|---|---|
| lactate | 8 weeks | post-exercise blood lactate in mmol/L after triple Wingate cycle exercise test |
Countries
Netherlands
Outcome results
None listed