Influence of Dietary Nitrate on Time Trial Performance in Swiss Paracycling Athletes (nitrate_TT)

Swiss Paraplegic Research, Nottwil

Status: Completed

Conditions: Exercise Nutritional Physiology

Treatments: Dietary Supplement: water; Dietary Supplement: beetroot juice; Dietary Supplement: sodium nitrate

Study type: Interventional

Funder types: NETWORK

Identifiers

NCT02454049

2015-04

Details and patient eligibility

About

The aim of this study is to investigate wether beetroot juice or sodium nitrate enhances time trial performance in Swiss paracycling athletes compared to the ingestion of a placebo supplement. Furthermore, the effects of beetroot juice and sodium nitrate on performance will be investigated in spinal cord injured and non-injured athletes.

Full description

The influence of dietary nitrate on performance will be tested performing a time trial on a handbike. The time trial will be the same as in the Paralympics 2016 in Rio. The subjects perform three trials and receive another supplement for each trial: beetroot juice with 6mmol nitrate, 6mmol sodium nitrate or plain water (placebo supplement). The time to complete the time trial will be the main outcome parameter.

Enrollment: 9 patients

Sex: Male

Ages: 18 to 60 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• healthy paracycling athletes
• healthy, able-bodied, upper-body trained individuals

Exclusion criteria

• female
• smoking
• any medication affecting performance
• medical conditions affecting performance

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Factorial Assignment

Masking: Double Blind

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9 participants in 3 patient groups, including a placebo group

beetroot juice

Active Comparator group

Description:

beetroot juice containing 6mmol nitrate, ingested 3hours before the exercise test

Treatment:

Dietary Supplement: beetroot juice

sodium nitrate

Active Comparator group

Description:

6mmol sodium nitrate dissolved in plain water, ingested 3hours before the exercise test

Treatment:

Dietary Supplement: sodium nitrate

water

Placebo Comparator group

Description:

85ml of plain water, ingested 3 hours before the exercise test

Treatment:

Dietary Supplement: water