Jussi Peltonen

Jussi Peltonen is a Senior Researcher at Polar, specialized in running biomechanics. When he is not collecting data for future running features he enjoys barefoot running.

Time to Run or Time to Walk? Your Body Knows the Answer

Have you ever wondered why we walk as fast as we do? Here’s how the body understands when – and how fast – to walk and when it’s time to start running.

Running Power Is Here – Does It Mean Heart Rate Training Is Old News?

With the new wrist-based running power, the power vs heart rate question is puzzling many runners: What are the differences and should you favor one over the other?

Running Data

Running power for intervals and hill running

How to Measure Running Power From the Wrist – and What Can You Use It for?

Here’s how to measure running power – straight from the wrist – and how to use it for interval training and hill running.

Running Data