Few opponents are able to slow down Barcelona's squad of stars, but Nike may have inadvertently managed to do just that - with shirts that absorb too much sweat.

The Spanish champion says it has recently met with Nike officials to complain about the first team's new shirts absorbing so much moisture that they take on added weight over the course of a game.

Spanish newspaper El Pais first reported claims from Barcelona players that the shirts more than doubled in weight by halftime.

Nike said in a statement to The Associated Press on Tuesday that it is ''working to find a solution to the problem with the shirts along with the club.''