With their season hanging in the balance, the Indiana Pacers say they understand changes have to be made if they're to win two straight and advance to the NBA Finals.

They can't let LeBron James put together another performance like the one he had Thursday, when the league MVP scored 16 of his game-high 30 points in the third quarter of Miami's 90-79 win that gave the Heat a 3-2 edge in the Eastern Conference finals.

They can't allow physical play get under their skin, and without fail, they say they can't play as passively as they believe they did Thursday.

After Game 5, that seemed to be the central theme in the Pacers' locker room, with several players saying they simply weren't aggressive enough when their team needed it most.

"You just have to be aggressive either early on offense or maybe sometimes calling plays to get me more involved," said Pacers guard George Hill, who committed three turnovers, had four fouls and was limited to a single point.

"The way I played ... I am ashamed of myself. I'll bounce back in Game 6. Aggressive, I think that's the key to the game. As long as we're aggressive, that's the key to the game."

Added Lance Stephenson, who had just four points and fouled out in the fourth quarter, "Getting those two fouls early in the game threw me off rhythm. I wasn't able to impact the first quarter and be as aggressive as I usually get. I never got my rhythm back ... we have to be aggressive. We have to play together."

Indiana played well enough in the first half, outshooting the Heat 51.4 to 42.5 percent. They led by as many as seven, but things shifted in the third.

They had no answer for James, who singlehandedly outscored Indiana 16-13. They shot just 21 percent in the quarter, and committed five turnovers.