In the last two decades, there has been a revolution on nutrition’s role in improving exercise performance. Earlier research focused on the amount and type of nutrition
to consume when exercising.
Portman Calculator
The Portman Calculator determines fluid and nutrition needs before, during and after your activity for optimum exercise performance. There are two calculators: An EXERCISE CALCULATOR that enables you to compute your needs for a wide range of activities and a TRIATHLON CALCULATOR to calculate your race course nutrition.
