AppleWatch   3461

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Apple’s Strengths and Weaknesses – Stratechery by Ben Thompson
This, broadly speaking, is the challenge for Apple moving forward: in what other categories does its business model (and everything that is tied up into that, including the company’s product development process, culture, etc.) create an advantage instead of a disadvantage? What existing needs can be met with a superior user experience, or what new needs — like the previously unknown need for wireless headphones that are always charged — can be created? To be clear, the iPhone is and will continue to be a juggernaut for a long time to come; indeed, it is so dominant that Apple could not change the underlying business model and resultant strengths and weaknesses even if they tried.
Apple  strategy  WWDC  tvOS  watchOS  AppleWatch  MacOS  iOS  iOS11  HomePod  Stratechery  2017 
19 days ago by inspiral
Twitter
Third perfect month in a row—averaging just a little less than 10,000 active calories burned per month.
AppleWatch  from twitter_favs
24 days ago by jablair
Fitness trackers accurately measure heart rate but not calories burned • Stanford Medicine
<p>Millions of people wear some kind of wristband activity tracker and use the device to monitor their own exercise and health, often sharing the data with their physician. But is the data accurate?

Such people can take heart in knowing that if the device measures heart rate, it’s probably doing a good job, a team of researchers at the Stanford University School of Medicine reports. But if it measures energy expenditure, it’s probably off by a significant amount.

An <a href="http://www.mdpi.com/2075-4426/7/2/3/htm">evaluation of seven devices in a diverse group of 60 volunteers</a> showed that six of the devices measured heart rate with an error rate of less than 5%. The team evaluated the Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn and the Samsung Gear S2. Some devices were more accurate than others, and factors such as skin color and body mass index affected the measurements.

In contrast, none of the seven devices measured energy expenditure accurately, the study found. Even the most accurate device was off by an average of 27%. And the least accurate was off by 93%.

“People are basing life decisions on the data provided by these devices,” said Euan Ashley, DPhil, FRCP, professor of cardiovascular medicine, of genetics and of biomedical data science at Stanford. But consumer devices aren’t held to the same standards as medical-grade devices, and it’s hard for doctors to know what to make of heart-rate data and other data from a patient’s wearable device, he said.</p>


Here's the <a href="http://www.mdpi.com/jpm/jpm-07-00003/article_deploy/html/images/jpm-07-00003-g002-550.jpg">graphic on energy expenditure</a> (which was measured using oxygen consumption). Fitbit Surge did best, followed by Microsoft Band, and then Apple Watch - though the researchers say overall "of the devices tested, the Apple Watch had the most favorable error profile while the Samsung Gear S2 had the least favorable error profile".

<img src="http://www.mdpi.com/jpm/jpm-07-00003/article_deploy/html/images/jpm-07-00003-g002-550.jpg" width="100%" />

Why the variability? The researchers note that "10,000 steps have been observed to represent between 400 kilocalories and 800 kilocalories depending on a person’s height and weight". That's a lot of variation in how our bodies burn energy.
fitness  energy  applewatch 
4 weeks ago by charlesarthur
Exclusive: Upcoming Apple Watch to include game-changing health features – BGR
There's no doubt about it — the Apple Watch is a hit. While Apple has not disclosed sales numbers, smart money has the device, now in its second generation, at over 25 million units sold.
applewatch 
4 weeks ago by twleung

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