The attacks come after state and local ransomware attacks in New York, Louisiana, Maryland and Florida resulted in the loss of significant sums.Technologyread more
Twitter and Facebook have suspended accounts believed to be tied to a state-backed disinformation campaign originating from inside China.Technologyread more
United States Steel Corp will temporarily lay off hundreds of workers at its Great Lakes facility in Michigan in coming weeks, according to a filing the steelmaker made with...US Marketsread more
Beijing will lower borrowing costs for companies, but that may not boost the economy as much as some hope.China Economyread more
Stocks are bouncing higher but could be trapped in a range longer term, until there's a resolution of the trade wars.Market Insiderread more
Stocks in Asia edged higher Tuesday morning as investors await the release of minutes from the Reserve Bank of Australia's July meeting. The People's Bank of China is also set...Asia Marketsread more
Powell will have the opportunity if not to walk back the "midcycle" assessment then to at least provide some further explanation about what it means.Economyread more
The report comes as Trump in recent days has lashed out over media reports about growing recession fears.Politicsread more
Apple has spent more than $6 billion on original TV shows and movies for its forthcoming Apple TV+ service, according to a Financial Times report on Monday.Technologyread more
The Business Roundtable, led by Jamie Dimon, gives a new definition of the "purpose of a corporation."Marketsread more
"These days, the consumer is addicted to convenience ... If it doesn't have a great digital presence or incredible bargains, take a pass," Jim Cramer says.Mad Money with Jim Cramerread more
But those that measure calories are far from accurate.
The researchers conducted a study to assess the quality of wearable trackers after finding a lack of data in peer-reviewed journals. "Anytime we get data from a patient via a device, we have questions about the accuracy," said Euan Ashley, an associate professor at Stanford, who focuses on cardiovascular medicine.
These devices aren't regulated, as they aim to optimize health rather than to detect disease, so they're not held to the same standards as their medical device counterparts. But many patients will still use them on a regular basis.
So Ashley's team evaluated 7 devices -- the Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn and Samsung Gear S2 -- with a group of 60 volunteers using rather than using treadmills and stationary cycles in the lab. The researchers compared the devices to FDA-approved gold standards, rather than to each other.
Here's what they learned:
Why are these devices so off when it comes to energy expenditure? "People are so variable," said Ashley. "Some people walk smoothly and others waddle along, and that has an impact."
Ashley now advises people to avoid trusting data like calories burned and using that to make decisions about what to eat. He warns against eating ice cream, for instance, simply because a tracker suggests that a user has burned sufficient calories.
Ashley hopes that wearable makers will respond to studies like these by releasing more data, whether it's positive or negative. The next iteration of his study will involve the volunteers wearing the devices in their daily lives rather than the lab.