Asked if he had reduced the workload, Keane replied: "No, we have trained them even harder this week.
"The players were probably surprised and shocked - maybe they read my comments and thought they were in for an easy week.
"It's been really tough. It's been a tough week for them, I have to say.
"But obviously, we have got to look at it in terms of the bigger picture.
"When you have got nine days between games, you certainly do not take it easy.
"We have to keep the players on their toes, but looking at the bigger picture, possibly we have been doing that too much - certainly, the sessions might have been slightly long.
"But we do get feedback from the players anyway and maybe as the season goes on, that's something we need to calm down on, I suppose.
"But this week wasn't the week for that."