“I love the support the coaching gives me and I feel like The Endurance Lab truly understands my goals.”

Katrina Cripps, top age group marathoner


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Sweat Testing

Individual sweat analysis will provide valuable information and allow you to customize your nutritional intake during training and racing...ultimately improving your performance.

Medion, the parent company of eLoad and related products, is the industry leader in electrolyte replacement. And they have finalized such individual sweat analysis testing just a short time ago. We at The Endurance Lab are pleased to be the first facility anywhere to offer this test!

Why Test Sodium? The most important electrolyte lost in sweat is sodium (Na+). Sodium imbalances can occur due to excessive loss of electrolytes through sweat and a haphazard training / racing fueling plan.

The electrolyte concentration of sweat can vary greatly from person to person. The sodium concentration of one liter of sweat can range from 300 mg to 3600 mg depending on the individual. Under-replacing your sodium losses can lead to various problems including dehydration, muscular cramping, headaches, gastrointestinal upset, nausea, fluid retention and hyponatremia.

If you have experienced any of the above symptoms, you may very well benefit from having your sweat analyzed. Knowledge is power, and tightening up your electrolyte replacement to this level of accuracy gives you a definite edge in race nutrition!

Sweat testing is $250. Testing can be done at our facility either during one of our WattsUp Cycling classes or in combination with a performance test. Results are received within a week to 10 days. Results are presented in a report form, complete with your sodium loss and suggested ways to replenish your sodium during training and racing. Give us a call and book your test today!


Call 416.750.3888 today to schedule your Sweat Test!