Very athletic blokes brought into part of hospital area (11)
I believe the answer is:
environment
'area' is the definition.
(environment is a kind of area)
'very athletic blokes brought into part of hospital' is the wordplay.
'very' becomes 'v' (abbreviation).
'athletic' becomes 'iron'.
'blokes' becomes 'men' (I've seen this in other clues).
'brought into' is an insertion indicator.
'part of hospital' becomes 'ent' (I've seen this in other clues).
'v'+'iron'+'men'='vironmen'
'vironmen' inserted inside 'ent' is 'ENVIRONMENT'.
(Other definitions for environment that I've seen before include "Natural world; surroundings" , "External surroundings" .)