High Intensity Intermittent Sports Performance
Conditions
Keywords
Red beetroot juice, High intensity intermittent exercise, Nitrite, Soccer
Brief summary
The objective of the current study is to assess the effect of 6-day dietary nitrate ingestion on high intensity intermittent sports performance in recreational soccer players.
Detailed description
Oral ingestion of nitrate (NO3-) in the form of both nitrate salts and concentrated red beetroot juice has been shown to significantly lower blood pressure at rest and to improve exercise performance during cycle time trials. Furthermore, a positive exercise performance effect of nitrate ingestion has been observed in recreational athletes during intermittent exercise. However, this was achieved after acute supplementation with a substantial dose of dietary nitrate. Whether similar ergogenic effects of nitrate supplementation can be achieved with a more conventional 6-day nitrate supplementation protocol with a lower daily dose remains to be established. Based on the gaps in current literature, our main goal will be to gain further insight into the effects of a 6-day nitrate supplementation protocol on high intensity intermittent exercise performance in recreational athletes.
Interventions
DIETARY_SUPPLEMENTNitrate-rich concentrated beetroot juice
James White, Beet It Sport Shot, 70ml (Standard)
DIETARY_SUPPLEMENTNitrate-depleted concentrated red beetroot juice
Beet It Sport Shot, 70ml (Placebo)
Sponsors
Maastricht University Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
MALE
Age
18 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy P * Players of the first two senior selection teams of a regional soccer club competing at the 3rd KNVB level or higher * Training ≥2 days a week * 18-40 years * Male
Exclusion criteria
* Use of medication * Injury prohibiting them from performing the exercise protocol effectively * Smoking * Currently supplementing diet with nitrate * Lactose intolerance
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Total distance covered during the Yo-Yo Intermittent Recovery 1 test (Yo-Yo IR1 test) | Performance 3 hours post red beetroot juice ingestion |
Secondary
| Measure | Time frame |
|---|---|
| Plasma concentration of nitrite and nitrate | Concetrations 3 hours post red beetroot juice ingestion |
| Salivary concentration of nitrite and nitrate | Concetrations 3 hours post red beetroot juice ingestion |
Other
| Measure | Time frame | Description |
|---|---|---|
| Baseline characteristics | 30 min during visit 1 (Screening) | Height, body weight, age, BMI |
Countries
Netherlands
Outcome results
None listed