Kept going; supported (9)
I believe the answer is:
sustained
I believe this clue is a double definition.
'kept going' is the first definition.
(I've seen this before)
'supported' is the second definition.
('sustain' can be a synonym of 'support')
(Other definitions for sustained that I've seen before include "held up" , "Steadily maintained" , "Kept going, supported" , "prolonged" , "Kept (something) going" .)