Injured Cook sits out training
England captain Alastair Cook sat out a practice session with a sore back as the tourists continued their Ashes preparations on Tuesday.
However, his absence is not likely to cast doubt on his participation in the upcoming Ashes series in Australia, according to fellow batsman Ian Bell.
Cook chose to skip England's scheduled session at the Floreat Oval in Western Australia in order to receive treatment on the complaint.
Paceman Stuart Broad was also an absentee, believed to be due to a similar problem, as England trained ahead of their opening three-day game against a Western Australia Chairman's XI at the WACA later this week.
The captain's omission in particular drew plenty of interest from the gathered media, but Bell insisted Cook's complaint was nothing serious.
"I'm sure he'll be fine," he said.
"He's had the odd little niggle with the back, which I suppose we all have certain areas we have to keep working on.
"Obviously a long flight isn't always easy. I'm sure he'll be right in the next week or so."
Bell, meanwhile, has backed Broad to overcome whatever abuse he receives from Australian fans following his decision not to walk in the first Ashes Test in July.
Broad can expect a hostile reception Down Under, having stood his ground in Nottingham after being given not out despite being caught by Michael Clarke at first slip off left-arm spinner Ashton Agar's bowling.
It was the most controversial moment of the summer series, which England won 3-0, and led to accusations of cheating from Australia coach Darren Lehmann in a radio interview that earned him a fine for breaching the ICC's code of conduct.
Broad stressed on Monday that he stood by his decision, admitting England may well have lost the first Test had he walked.
Bell hoped the issue would not be the focus in the forthcoming series, which gets under way in Brisbane on November 21, but said whatever happened Broad was not overly worried about the reception he will be afforded.
"I think we're all going to get a little bit of stick over here," Bell said on Sky Sports News.
"I don't think, as an Englishman you're going to get too much sympathy.
"I don't think he's too worried about any of that. We have to move forward. We all fully expect a real competitive series, and a great atmosphere at the grounds between both teams. Both sets of supporters will be excited. That's what you play cricket for.
"As an Englishman, it's the best tour you can come on. It's the most intense cricket, the toughest cricket you can play, so that's what we're really excited about."
He added: "I certainly hope it (Broad's non-walk) is not a focus. I hope the cricket is the massive focus in a really good series.
"But everyone is entitled to their opinion. Everyone has the right to do what they want to do.
"If they want to wait for the umpire to make the decision, you're in your rights to do that. I certainly hope this series is all about the cricket - not about the other situations that happen.
"I think we've all probably at certain times been guilty of nicking one and not walking. With the game as it goes, you get rough decisions sometimes and you get away with some. That's the beauty of the game at times - it's swings and roundabouts."