Slight hiccup over exercise initially for trainer, perhaps? (4)
I believe the answer is:
shoe
'trainer perhaps?' is the definition.
(I've seen this before)
'slight hiccup over exercise initially' is the wordplay.
'initially' says to take the initial letters.
The first letters of 'slight hiccup over exercise' is 'SHOE'.
'for' is the link.
(Other definitions for shoe that I've seen before include "Maybe court" , "Oxford, for instance" , "trainer, for example" , "eg Trainer" , "Card dispenser" .)