Tight hip flexors, especially a deep muscle called the psoas, can silently stress your spine. Here's why this muscle deserves ...

Millions suffer from lower back pain every day – but what if we’ve been blaming the wrong part of the body all along?

Results At all three time points, the CSA of the psoas muscle was significantly greater ipsilateral to the kicking leg, while the CSA of the quadratus lumborum muscle was significantly greater on the ...

Carlos Alcaraz's participation in the upcoming Madrid Open is in serious doubt, with the Spanish star set to undergo a ...