Restrict or hinder (5)
I believe the answer is:
cramp
This clue is a double definition.
'restrict' is the first definition.
(I know that cramp is a more specific form of the action restrict)
'hinder' is the second definition.
(I've seen this in another clue)
(Other definitions for cramp that I've seen before include "Muscular spasm, very painful" , "To restrict; a muscle pain" , "Severe muscular pain" , "hamper" , "Involuntary muscular contraction" .)