Do fingers get thicker with climbing?

Do fingers get thicker with climbing? The reason rock climbers do sometimes have thicker-looking fingers is tied to both how often and how hard they train. Supporting so much weight on the fingers causes the tendons to grow, sometimes doubling in size. The bones also can thicken to help protect the digit from stress damage like microfractures.

The reason rock climbers do sometimes have thicker-looking fingers is tied to both how often and how hard they train. Supporting so much weight on the fingers causes the tendons to grow, sometimes doubling in size. The bones also can thicken to help protect the digit from stress damage like microfractures.