Dietary salt and responses to fluid overload during exercise

Not Applicable

Completed

• Conditions: Exercise associated hyponatraemia; Diet and Nutrition - Other diet and nutrition disorders

• Registration Number: ACTRN12612000939897
• Lead Sponsor: School of Physical Education , University of Otago PBRF funding

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2012-09-04
• Last Update Posted: 13 January 2020

Recruitment & Eligibility

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

Inclusion Criteria

Endurance trained in running or cycling.

Exclusion Criteria

The presence of kidney disease, hypertension and on any medication or supplements other than multivitamins or sports drinks.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Plasma sodium concentration[On day 10 of diet, during 3 hours of (cycle or running) exercise in the heat at 0, 15 minutes and every 30 minutes thereafter.];Urinary excretion (volume and Na+)[Day 10<br>Cumulative urine production during the exercise trial: during the exercise itself, if and when the participant feels the need to urinate, and then immediately following the 3 hour exercise trial.]

Secondary Outcome Measures

Name	Time	Method
Resting blood pressure<br>This will be measured, in the fasted state, participants having sat for 10 minutes with arm supported, legs uncrossed, with an automated sphygmomanometer. Two measurements will be made and if they are not similar a third measurement will be made. An average of the two (closest) will be taken.[Morning day 1 before starting dietary intervention and on day 10 of dietary intervention, prior to exercise trial.]