Evaluation of the Effect of Sodium Bicarbonate Water on Blood Pressure in Normotensive Subjects

Evaluation of the Effect of Daily Consumption of Sodium Bicarbonate Water for 15 Days on Blood Pressure in Normotensive Subjects

ROX_TENSIO18 is a randomised cross-over trial and the main objective is to evaluate the effect of daily consumption of sodium bicarbonate water for 15 days on blood pressure.

Secondary objective are:

• Evaluation of the effect of daily consumption of sodium bicarbonate water on total salt intake
• Evaluation on blood pressure of the usual food groups that are the strongest contributors of salt intake.

Volunteers are normotensive subjects divided into two equivalent groups. Group A subjects will begin their first 15-day period with the consumption of St-Yorre mineral water.

Group B will begin the first 15-day period by drinking tap water. After a washout period of 15 days, each group alternates with a new period of 15 days of water consumption monitoring: tap water for group A and mineral water St-Yorre for group B.

For each period salt intake and blood pressure are measured.Three-day food records are also performed for both 15-days periods.

Inclusion Criteria:

• Normal blood pressure between 90/60 and 140/90 mm Hg
• Usually drinks tap water;
• Knowing read and write French routinely,
• Possessing an internet connection at home,
• Possessing and knowing how to use a computer or tablet,
• Affiliated with a social security scheme
• Not Trust
• Having signed the informed consent letter

Exclusion Criteria:

• Pregnant or lactating woman
• BMI greater than 35 kg / m²
• Heart failure
• History of cardiovascular disease
• Hypertension treated or untreated
• Renal failure.