Influence of Sodium Bicarbonate on Time-to-exhaustion at Critical Power in Endurance Athletes

Not Applicable

Completed

• Conditions: Performance
• Interventions: Dietary Supplement: Sodium bicarbonate; Dietary Supplement: Placebo

• Registration Number: NCT01621074
• Lead Sponsor: University of Zurich

Brief Summary

During endurance exercise in the heavy and severe intensity domains, the rate at which metabolites that have been associated with the fatigue process (e.g. Pi, ADP, H, and extracellular K) accumulate increases. possibly leading to exercise cessation. Sodium bicarbonate, as a nutritional supplement, has gained attention over the past decades, because it might delay of offset fatigue. To date, there is a controversial discussion about which delivery mode (amount and frequency) might be best in optimizing endurance performance. Since the high ion load consequent to multiple ingestions might increase plasma volume, and consequently decrease bicarbonate concentrations, single acute ingestion could be more beneficial. However, in multi-day competitions or tournaments it might be necessary to use the supplement on a daily basis. Here, the investigators aim at investigating the effects of single dose or multiple dose (on five consecutive days) administration of bicarbonate vs. placebo increases endurance performance and acid-base homeostasis in trained male endurance athletes.

Detailed Description

Not available

Basic Information
|
Recruitment & Eligibility
|
Study & Design
|
Trial Locations

Study Timeline

• Study Start: 2011-10
• Study First Submitted: 2012-06-12
• Study First Submitted QC: 2012-06-14
• Study First Posted: 2012-06-15
• Primary Completion: 2012-08
• Study Completion: 2013-01
• Status Verified: 2013-04
• Last Update Submitted: 2013-04-11
• Last Update Posted: 2013-04-12

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 12

Inclusion Criteria

Not provided

Read More

Exclusion Criteria

Not provided

Read More

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Sodium bicarbonate	Sodium bicarbonate	-
Placebo	Placebo	-

Primary Outcome Measures

Name	Time	Method
Time-to-exhaustion	5 weeks

Trial Locations

Locations (1)

University Hospital Zurich, Division of Neurology; 🇨🇭 Zurich, ZH, Switzerland