It’s not only duration or intensity that matters for performance, but a combo of the two.

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 ...

Correspondence to Dr Lena Kristin Bache-Mathiesen, Department of Sports Medicine, Oslo Sports Trauma Research Centre, Norwegian School of Sports Sciences, Oslo, 0863, Norway; ...