The US economy braked more sharply than expected in the second quarter as shoppers curbed their free-spending ways amid a sharp advance in energy prices, government data released on Friday showed.

US gross domestic product, a measure of total output within the nation’s borders, climbed at a modest 3 percent annual pace in the April-June period after an upwardly revised 4.5 per cent clip at the start of the year, the Commerce Department said.