The death of a young biathlete has refocused attention on hypoxic training masks, especially their cardiovascular effects, in ...

The performance-enhancing altitude mask that Olympic hopeful Sivert Guttorm Bakken was wearing when he was found dead this ...

The thin air at high altitudes has long been recognized as a training superpower for athletes. If you live and train at altitude, you’ll likely wipe the floor with your lowland competitors. That’s why ...