Washington, April 22 : Madonna is back to pumping iron in the gym just three days after she landed in hospital following a riding accident.

The megastar had been rushed to a hospital on New York''s Long Island after she fell off a horse while riding in the Hamptons on April 18.

The Queen of Pop was discharged hours later and her rep Liz Rosenberg, had said the singer would undergo "further tests and continues to remain under observation by doctors".

But her trainer Tracy Anderson insists Madonna suffered minor injuries, which would not hamper her workouts as she perfects her shape for the summer trip of her ongoing Sticky & Sweet world tour.

"She''s going to be fine. She fell on her butt. She''s fine,” Contactmusic quoted Tracy as telling Us magazine.

"…We have our set training. She''s like a professional athlete. She can''t mess around with her training. I mean, she has to be able to perform in front of 70,000 people who are sucking the life out of her, and she''s singing and dancing. There are no shortcuts when you''re training in that way," she added. (ANI)