Clinical trial NCT06073275: Effects of Beetroot Juice Intake on Performance and Physiological Parameters
Official title: Effects of Acute Beetroot Juice Intake on Performance, Maximal Oxygen Uptake, and Ventilatory Efficiency in Well-trained Master Rowers: A Randomized, Double-blinded Crossover Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Pulmonary Function
Nutrition, Healthy
Keywords: Cardiorespiratory performance
Time trial performance
Beetroot juice
Master rowers
well-trained
Lead sponsor: Campus docent Sant Joan de Déu-Universitat de Barcelona
Sponsor class: OTHER
First posted: 2023-10-10
Enrollment: 10
Sex: MALE
Minimum age (years): 30
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Intervention model description: This study was a randomized, double-blind, crossover design
Primary purpose: OTHER

Brief summary: This study was a randomized, double-blind, crossover design for 3 weeks. In the first week, a researcher explained all the experimental procedures to the participants. In the following two weeks, the participants attended the Exercise Physiology laboratory to be assessed in 2 rowing ergometer sessions, separated from each other by a washout period of 7 days, under the same environmental conditions.

In both strictly identical sessions, the participants randomly ingested beetroot juice (BRJ) or placebo (PL) 3 hours before the start of the tests.

Detailed description: Three hours after BRJ or PL intake, the participants began the 2,000-meter rowing ergometer test. Before starting (pretest) and at the end of the tests (posttest), blood oxygen saturation, rating of perceived exertion (RPE), and blood lactate measurements were taken. During the rowing ergometer tests, performance parameters and cardiorespiratory variables were recorded.

Eligibility criteria: Inclusion Criteria:

1. national and/or international level;
2. without cardiovascular, respiratory, metabolic, neurological or orthopedic disorders that may affect the performance of the rowing ergometer test;
3. no consumption of drugs or medicines;
4. no smoking;
5. Informed consent to participate in the study signed by all rowers

Exclusion Criteria:

1. Ingestion of nutritional supplements taken in the three months prior to the start of the study;
2. no following the guidelines established by the nutrition professional.

Primary outcomes:
measure: Rowing performance: Time trial
timeFrame: through study completion, an average of 3 weeks
measure: Rowing performance: Mean Power output
timeFrame: through study completion, an average of 3 weeks
measure: Rowing performance: meter per stroke
timeFrame: through study completion, an average of 3 weeks
measure: Cardiorespiratory performance: absolute oxygen uptake
timeFrame: through study completion, an average of 3 weeks
measure: Cardiorespiratory performance: relative oxygen uptake
timeFrame: through study completion, an average of 3 weeks
measure: Cardiorespiratory performance: ventilatory efficiency
timeFrame: through study completion, an average of 3 weeks
measure: Metabolic performance: lactate
timeFrame: through study completion, an average of 3 weeks
Secondary outcomes:
measure: Cardiorespiratory performance: Maximum heart rate
timeFrame: through study completion, an average of 3 weeks
measure: Cardiorespiratory performance: Mean heart rate
timeFrame: through study completion, an average of 3 weeks
measure: Saturation
timeFrame: through study completion, an average of 3 weeks
measure: Cardiorespiratory performance: minute ventilation
timeFrame: through study completion, an average of 3 weeks
measure: Scale of Perceived exertion ratio (RPE)
timeFrame: through study completion, an average of 3 weeks
measure: Rowing performance: strokes
timeFrame: through study completion, an average of 3 weeks
Other outcomes:
Locations:
city: Sant Boi De Llobregat
country: Spain
facility: Campus Docent Sant Joan de Déu. Universitat de Barcelona
state: Barcelona
Study officials:
affiliation: Campus docent Sant Joan de Déu-Universitat de Barcelona
name: Manuel V Garnacho-Castaño, PhD
role: PRINCIPAL_INVESTIGATOR
References: