The metric is available on most fitness trackers. Here’s what it means. By Talya Minsberg You just finished a long, hard bike ride. But how hard was it, exactly? That depends on what you measure: How ...

When it comes to running these days, wearables have become a part of the “uniform.” If you sift through race photos, you’ll probably see both recreational and professional runners looking down at ...

This series has focused on training load and related concepts and their implications for firefighter fitness. Firefighting requires exceptional physical and mental endurance. Now let’s take a quick ...

Correspondence to Dr Torstein Dalen-Lorentsen, Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo 0863, Norway; torstein.dalen{at}nih.no The ...