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Sodium in sports
At the population level, health authorities recommend limiting sodium intake to prevent chronic conditions. However, the role of sodium in sports is more complicated, as this electrolyte plays important roles related to performance and recovery. Roles of sodium As seen in the article How much salt is too much?, sodium has roles in the maintenance of plasma volume and transmission of nerve impulses. In addition, it is needed for muscle contraction and glucose transport into cells. As a reminder, glucose is essential for energy production during most types of exercise, as well as recovery post-exercise. Sodium in sports How do we lose sodium The main ways we lose sodium is…
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How much salt is too much?
If you have a heart condition, your doctor has probably told you to limit your salt intake. As it is impossible and undesirable to eliminate salt completely, it is important to know much salt is too much? Sodium vs salt Sodium is a mineral and what we know as salt (the one we use for seasoning our food) is sodium chloride. Therefore, the amount of salt we consume does not equal the amount of sodium we consume. Sodium in food manifests in other forms, not just as the salt that is added for seasoning. Sodium is involved in many processes in the body, including maintenance of plasma volume, acid-base balance,…
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Diet and blood pressure
Hypertension, or high blood pressure, is a common chronic condition that represents a risk for cardiovascular health. Besides other lifestyle factors, there is a clear link between diet and blood pressure which we’ll discuss in this article. Blood pressure levels In Australia, blood pressure is classified as follows (1): Category Systolic (mmHg) Diastolic (mmHg) Optimal <120 and <80 Normal 120-129 and/or 80-84 High-normal 130-139 and/or 85-89 Mild hypertension 140-159 and/or 90-99 Moderate hypertension 160-179 and/or 100-109 Severe hypertension ≥180 and/or ≥110 Isolated systolic hypertension >140 and <90 Target recommendations vary for individuals that have other health conditions. Dietary factors Sodium In about half of people with hypertension and a…
