Sportswear giant Reebok International Ltd on Thursday posted a slight rise in second quarter net income on the back of higher sales and said its footwear backlogs for the second half were at their highest level for five years. The Massachusetts-based company reported net income of $26m, or. 41 cents per diluted share, compared to net income of $25m, or 39 cents per share, in the year-ago period as sales climbed 12 per cent - or seven per cent on a constant currency basis - to $803m from $717m last year.