Stanford University said that 11,000 iPhone owners signed up for a heart health study using Apple’s newly-announced ResearchKit in the first 24 hours–completely unprecedented numbers.

“To get 10,000 people enrolled in a medical study normally, it would take a year and 50 medical centers around the country,” said Alan Yeung, medical director of Stanford Cardiovascular Health, speaking to Bloomberg.

Stanford is one of five academic centers that have developed apps that use the iPhone’s built-in accelerometers, gyroscopes and GPS to provide data which assists in medical research. There are, say researchers, both pros & cons to recruiting study participants through ResearchKit …  expand full story