James received two and a half bags of intravenous fluids after the Spurs' 110-95 victory on Thursday because of leg cramps he suffered midway through the fourth quarter.
"I should be 100 percent on Sunday," the most valuable player of the finals the last two seasons said Friday. "Training staff said I should take it light today, give the body another day to recover.
"Tomorrow I should be back on my feet full go, and I've got all day Sunday to get ready for Sunday night."
An electrical outage at the AT&T Center on Thursday cut the air conditioning in the 18,000-seat arena, creating sweltering conditions for both players and fans.
James, who has a history of cramping, played only five minutes in the fourth quarter, and left the game for good with four minutes remaining and the Heat trailing 94-92.
The 10-time All-Star had to be helped by teammates to his seat on the bench. With James out, the Spurs staged a late-game rally and won easily.
"I hydrated as much as I could to the point where your stomach feels like it just can't take anymore," he said. "Last night it just got to a point where the body just had enough, just dehydrated.
"Between jumping and running and cutting and sweating and a little bit of everything, exhaustion, the body just hit the shutdown. Nothing that you can do about it, in my case.
"It's frustrating for sure, but nothing I can do about it."
Heat coach Erik Spoelstra said James has taken all possible precautions and has had "minimal issues" with cramps since being hobbled in Game Four of the 2012 finals against Oklahoma City.
But, he said, Thursday was another matter, as on-court temperatures approached 90 degrees (32C).
"The preparation he had to the game was excellent," Spoelstra said. "It needed to go to another extreme level. He took seven cramping pills. He was taking electrolytes the entire game, during halftime, building up his fluids.
"Every timeout we took him out of the game, far more frequently than we ever have in the past."
Spoelstra said James plays the game with only one gear: all-out.
"The biggest issue that is lost out there is how competitive LeBron James is when you get to this level," the coach said. "Most athletes pace themselves.
"It's not a coincidence and a secret and why we have had the success we have had with the best player in the world, when he pushes his body past the point of regular limits for a competitive advantage.
"It's an extremely admirable trait. But last night was extreme. It was very extreme."
Arena officials said the problem had been fixed and Sunday's game will be played under normal conditions.
James concurred with Spoelstra that Thursday's temperatures were intense.
"I've never played an NBA game like it was last night as far as the heat," he said. "Not an excuse but it was an extreme condition.
"I looked at the stands at one point and I saw every last fan having fans, double entendre, waving fans and I knew at that point, this is something different." (Editing by Gene Cherry)
source: www.abs-cbnnews.com
