Madsen BK, et al. - Researchers performed a comparison of muscle function in terms of strength, force steadiness in neck flexion, as well as extension, and reduced rate of force development (RFD) of the shoulder in tension-type headache (TTH) patients and healthy controls and determined its correlation to tenderness. The effect of strength training (ST) on neck and shoulder functions in TTH patients was also assessed. A deteriorated muscle function, indicated by a lower force steadiness and RFD, was observed in TTH patients compared to the healthy controls. Findings suggested no superiority of ST over ergonomic and posture correction (EP) as both groups of TTH patients showed some improvement in neck and shoulder functions during the 10 weeks intervention and at follow-up.