These factors are discussed in ResMed's SEC filings, such as forms 10-Q and 10-K, which may be accessed through the company's website at www.resmed.com.
With that said, I would like to turn the call over to Dr. Peter Farrell, ResMed's Chairman and CEO. Dr. Farrell, please go ahead, sir.
Peter C. Farrell
Thank you, Angela, and I think we still have some time left. And thanks, everyone for joining us. I'll begin with some summary remarks, and then turn the call over to Brett Sandercock, our CFO. And Brett will provide more granularity on the numbers. And then we'll go to Q&A. So first, the financials. A short summary. We finished with a very solid quarter. Global revenues were $349.1 million, up 11% headline in growth or 13% constant currency. Revenues in the Americas grew by an extremely robust 18% year-over-year to $189.9 million and ROW revenue increased by 4% headline or 7% in constant currency to $159.2 million. This represents the 69th consecutive quarter in which we've grown the top line that is quarter-over-quarter since we went public in 1995. And obviously we're pleased with that result and will be able to continue that record growth. Net profit after tax increased 21% to $64.6 million while GAAP EPS increased by robust 29% to $0.44 for the quarter. Excluding amortization of acquired intangibles, EPS was a record $0.46.
With respect to product performance, let me first start with masks, this category continued to perform extremely well especially in the Americas. The 3 new masks in the Forex trilogy, the Quattro FX, the Mirage FX and the Swift FX, as well as the for her versions of these masks continued to enjoy brisk sales. In fact, the Mirage FX is doing particularly well and we are steadily gaining additional share in this category. In fact, our data show that the Mirage FX is currently the biggest selling nasal mask on a global basis. And the new Swift FX Bella, mask for female patients, with loops that wrap around the ears, and this allows us to not have additional headgear, that is also doing very well and we expect to see continuing traction with it.