Allen, Bellamy, Ramsey and Taylor are in the Wales squad for the friendly against Bosnia-Hercegovina in Llanelli, and Coleman believes they have benefited from their Olympic experience.
"There was a lot said about the Olympics and we've been there before but it's worked out well for us," Coleman said.
"Playing pre-season friendlies is one thing, when you're playing tournament football it's more serious.
Jason Brown (Aberdeen), Boaz Myhill (West Bromwich Albion), Owain Fon Williams (Tranmere Rovers).
Darcy Blake (Cardiff City), Chris Gunter (Reading), Adam Matthews (Celtic), Sam Ricketts (Bolton Wanderers), Neil Taylor (Swansea City), Ashley Williams (Swansea City), Joel Lynch (Huddersfield Town).
Joe Allen (Liverpool), Andrew Crofts (Brighton & Hove Albion), David Edwards (Wolverhampton Wanderers), Joe Ledley (Celtic), Aaron Ramsey (Arsenal), Gareth Bale (Tottenham Hotspur).
Craig Bellamy (Cardiff City), Simon Church (Reading), Steve Morison (Norwich City), Hal Robson-Kanu (Reading), Sam Vokes (Burnley), Rob Earnshaw (Cardiff City).
"Tournament football - training everyday [and] building up to serious games - is a completely different level to training two or three times a week and playing an hour in a friendly game.
"It's a shame they got knocked out in the quarter-final but it's given them a little rest.
"It's worked out OK for us as it goes, because the guys are fit. They enjoyed the experience [and] are in a good frame of mind."
Wednesday's friendly with Bosnia-Hercegovina is Wales' final match before their World Cup qualifying campaign begins against Belgium at Cardiff City Stadium on 7 September.
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