Sports apparel maker Under Armour said Thursday that quarterly earnings rose because of strong apparel sales.

The Baltimore company reported net income of $15.2 million for the fourth quarter ended Dec. 31. That was compared to $8.3 million for the same period a year ago.

Revenue increased 24 percent to $222.2 million.

"Our strong apparel growth in the fourth quarter are great evidence that our brand is resonating with new customers," said Chairman and CEO Kevin Plank.