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Sweat Testing

We are proud and excited to announce that we are now a testing partner to Precision Hydration. We have introduced sweat testing to our toolbox of assessments to help tailor your nutritional approach to training and racing.

Sweat testing is a fairly novel approach to optimizing and individualising hydration strategies. It is gaining steam in the United States and Britain with a number of recreational and elite athletes and teams using the technology.

The two main components of sweat are water and electrolytes. Determining your fluid losses is simple enough, a pre and post workout weight will guide you here and your thirst is a kind reminder. However, the more intricate detail of what else you are losing is less easy to identify. Electrolytes, or minerals, are also lost in sweat and include sodium, potassium, magnesium and calcium. The most significant electrolyte lost is sodium. Evidence suggests the sodium content of sweat may vary 9-fold and thus total sodium losses can range from fairly small to quite significant.

Low sodium levels or hyponatremia can be complicated by weather conditions and excessive consumption of fluid, particularly fluids that do not match your rate or concentration of losses. Sodium is an important player on both muscle and nerve function and losses may negatively impact both health and performance. Inadequate levels have been linked to early fatigue, weakness, nausea, muscle fatigue and may contribute to cramping.

Excessive sodium consumption may also be detrimental where salt sensitive individuals may experience a rise in blood pressure and high concentrations of sodium may also lead to fluid retention post exercise.

Due to these issues and our focus on tailor-made nutrition services we are excited to be adding this facility. A test is quick, easy and pain-free. An electrode and gel disc will stimulate sweat production on your forearm which is then captured and measured for sodium concentration. Once we know your concentration we can suggest the relevant rehydration products that would suit your needs. Combining this data with your sweat rate can ensure your hydration strategy is spot on. The largest contributing factor to your sweat sodium concentration is genetic which means generally this test is only needed once in your lifetime. Small variation may occur with heat or altitude acclimatization but this is unlikely to impact your results enough to adjust your plan.

For more info on sweat and sweat testing read here (PDF)

To book your test or for any questions please get in touch

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