WESTERN Bulldogs coach Rodney Eade says high-impact injuries are not a reason to cap interchange numbers but believes there is merit in considering substitute players.

As the Dogs and the Hawks were left to regroup after a heavy-hitting clash that left at least five players in jeopardy of missing next week, the issue of slowing the game down through restricting interchanges was raised again.

However, Eade says the notion is "garbage" and believes there is already a high enough chance of soft-tissue injuries occurring without extending the amount of time players are on the ground.

"There's no proof in stats that high-impact injuries have increased," he said, after Sunday's win over Hawthorn.

"Both teams had two off and I was worried in the end players would do muscle damage so where's the duty of care there?

"If players tear a hamstring and miss three weeks, that's okay?

"When they get fatigued, we're still asking them to run hard ... There's a fair chance they're going to get injured there."

The Dogs lost Ryan Hargrave to a neck injury early in the game and later Jason Akermanis to a hamstring and Liam Picken to an ankle.

The Hawks were crippled by Josh Gibson's absence owing to a hamstring and later Jordan Lewis' periodic benching after a heavy high-speed knock.

Eade said there was merit in introducing substitutes but warned against the game degenerating if interchanges were restricted.  

"Having that extra player … Hawthorn lost one early and then we lost one and then we both lost another," he said.

"You talk about duty of care and players being fitter, faster, stronger so they can hit the contests and rotations keep them fresh, but ...there's no level of fitness that is going to be able to substitute.

"I know we're getting better with our sports science but you'd hate the game to decrease with fatigue factor.

"At the end we were just trying to chip it around. If we do that half way through the second or third quarters, does the game lose something of it's impact because we have limited interchanges?"

Eade conceded his side wasn't playing well as a team and needed to improve after their scrappy first-half performance.

"A lot of players have been patchy although most of them at some stage have done something over the three weeks; they've not completely bereft of form," he said.

"Certainly as a unit we're not playing at 100 per cent at the moment."