The Spanish club's physical trainer Antonio Pintus favours using the K5 masks to measure players' physical condition ...

Los Blancos are turning to an unusual method to test players’ physical output ahead of a busy schedule.

Real Madrid players are performing a typical stress test, but with a portable system to measure their maximum oxygen uptake.

It was hypoxia mask day at Real Madrid, and the reason was explained by Antonio Pintus, the team's fitness coach.

For the most part, basketball is considered a no-contact sport, though it’s technically categorized as one, it’s nowhere near as intense as collision sports like football and hockey. So, when an NBA ...

The player in question was Crusaders senior forward Caleb Kenney. The mask apparently worked like a charm for him as he finished with 16 points on 7/8 shooting as Holy Cross beat Sacred Heart 82-75.

Real Madrid players have been pictured taking part in high-intensity drills while wearing unusual blue masks - so what's the reason for them?