Reebok International Ltd on Wednesday posted a 74 per cent jump in second quarter net profit as it reaped the rewards of more advertising and greater shelf space. The world’s second largest sports shoe producer said net income soared to $24.6 million, or 39 cents per share, from $14.1m, or 24 cents per share, in the year-ago period, with net sales up one per cent at $717.4m.