Fitness products maker's shares Nautilus Inc. (NLS) closed up 9.82% at $20.25 in extended tradingNautilus reports better-than-expected profit for the 8 quarter in a rowNautilus Inc. on Monday reported second-quarter profit of $3.5 million.On a per-share basis, the Vancouver, Washington-based company said it had profit of 11 cents. Earnings, adjusted for non-recurring costs and to account for discontinued operations, came to 12 cents per share.The results topped Wall Street expectations. The average estimate of five analysts surveyed by Zacks Investment Research was for earnings of 9 cents per share.Revenues for Q2 were $78.5 million versus estimates of $77.83 million, up 32% year-over-year.Retail Net Sales for Q2 were $32.9 million, a year-over-year increase of 89.1%. Royalty revenue ticked up to $700 thousand compared with $600 thousand last year.CEO Bruce Cazenave said, "As we enter the back half of the year, we are well positioned for more growth with a number of new product introductions and increased market penetration secured in the Retail segment. Our focus on product innovation and channel diversification will provide the foundation for continued growth in market share both domestically and internationally."Beating Wall Street expectations for 8 straight quarters is an impressive achievement and figures are really good. I will look more deeply into this company.