Bayern Munich striker Robert Lewandowski has appeared to criticise former coach Carlo Ancelotti's training methods after a recent spate of injuries at the club.

The German champions have suffered a host of injuries of late -- including to Arjen Robben, Thiago Alcantara and Thomas Muller.

And Lewandowski, 29, suggested Ancelotti's training methods were a contributing factor but refused to blame interim coach Jupp Heynckes, who took over from the Italian last month.

"When a lot of muscle injuries occur you shouldn't monitor training over the last few weeks, you have to go back two or three months," Lewandowski told Sport Bild. "It's more likely that's the reason."

Carlo Ancelotti was sacked by Bayern Munich earlier this season. Alexander Hassenstein/Bongarts/Getty Images

Many members of the first-team squad were reportedly unhappy with Ancelotti's lax training methods and insisted that they were not properly match fit -- even offering to carry out extra training shifts -- a request the coach is reported to have turned down.

"If there's not enough training then you have do something individually," Lewandowski said.

Former Bayern and Germany physio Oliver Schmidtlein added to Sky: "We heard that Carlo Ancelotti's training was not very comprehensive. Players were not allowed to do any extra training, nor carry out any athletic sessions. There was not a real warm-up either -- players reported that lasted only five minutes. When the players themselves say it's not enough, then it is a surprise."

Lewandowski's comments follow on the back of Bayern president Uli Hoeness criticising Ancelotti's backup staff, including members of his medical team, coaches and physios.