The researchers posit that although the extra rigidity of the tendon makes up for the lost muscle function, it causes pain once the pumps come off and the tendons have to stretch again.

研究人员推定，虽然肌腱额外的刚性可补偿失去的肌肉功能，但是只要不穿高跟鞋，肌腱就被迫再次伸展开，导致疼痛。