Profit at US sporting goods company Nike increased in the second quarter year-on-year, the company reported on Thursday, beating analysts’ estimates. The company’s bottom line totalled $1.58 billion, a 19% increase compared to $1.33 billion a year earlier. Diluted earnings per share was $1.03. Analysts on average had expected the company to earn $0.85 per share, according to figures compiled by Thomson Reuters. Analysts’ estimates typically exclude special items. The company’s revenue for the quarter rose 0.5% to $13.39 billion from $13.32 billion last year. “Our Q2 results demonstrated how we…