USA TODAY International Edition
An Apple reading a day may just make doc shrug
Physicians unsure how to use wearable data
We use wearables to count calories, measure heart rates and even rate our quality of sleep.
With healthier living in mind, we purchase kid- friendly versions for our children and step- counting options for grandparents. Apple Watches, Fitbits and other fitness trackers are everywhere as data- obsessed users tap away at tiny screens from the gym to the doctor’s office.
It’s clear that consumers love wearables and the information they provide – but do physicians?
Doctors have mixed views on how patients gather and present information from gadgets with quasi- medical aspirations. Most say its a plus that patients can collect and curate more health- related data than ever before. However, bringing printed out pages of calories burned or counted steps to your
next checkup isn’t exactly advised.
It becomes “just a data dump” at the clinician’s office, according to Neel Chokshi, medical director of the sports cardiology and fitness program at Penn Medicine, which has conducted several studies on the relationship between consumers and their wearable devices.
Chokshi said some of the information provided by wearables is actually useful for physicians, but most of it is not. “My hypothesis is ( fitness trackers) can be useful for doctors. We just haven’t figured out how to use them quite yet,” Chokshi said.
A story published in the MIT Technology Review echoed Chokshi’s sentiments, finding that doctors from a number of specialties are unsure what to do with data such as counted steps.
Apple users have access to the Health app, and developers can utilize the HealthKit platform, which offers the ability to track health data including medical records, lab results and medications downloaded directly from medical institutions. Android users have Google Fit to help them and their doctors analyze personal health trends.
Products from FitBit, Garmin and others can monitor a user’s heart rate and notify if it goes too high or too low, and there are several astounding stories out there of fitness trackers alerting people of sudden medical emergencies.
These benefits to patients are often seen only in extreme cases when the device is charged and worn long enough to identify a person’s irregular heartbeat.
Unfortunately, the information isn’t easy for doctors to make sense of.
“As clinicians, it can be challenging because these tracings are not very clear. Some can be challenging to interpret. Other times, patients may really inundate ( staff) with a lot of tracings to look at,” said Shon Chakrabarti, an interventional cardiologist and medical director at Abiomed, which manufactures medical devices for people with heart problems.
Then there’s the question of accuracy. Heart rate measurements, which are a crown jewel of almost all fitness trackers, tend to be the most accurate metric across wearables, according to a Stanford study that examined the precision of the Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn and the Samsung Gear S2.
There’s still lots of room for technological error because the trackers measure a person’s heart rate on the wrist rather than closer to the chest, and readings can be skewed by movement and sweat.
None of the seven devices measured energy expenditure ( or calories burned) accurately, the study found. Most wearable fitness trackers, except Apple Watch Series 4’ s EKG and irregular rhythm notification features, are not cleared by the FDA or approved to diagnose any conditions.
“I’d like to see significantly more large- scale, peer- reviewed studies validating the accuracy of the data before we start basing care decisions on the data,” said Ripley Hollister, a family medicine specialist who is a board member of the Physicians Foundation.
What doctors do care about is streamlined data integration and information that is clinically actionable, Chakrabarti said. Patients who come into the office with accurate and reliable data about their underlying condition or symptoms could speed things up during medical emergencies.
Doctors are OK with their patients’ affinities with wearables, as long as they recognize that the gadgets are noncertified and that the data is nonclinical.
Both Chakrabarti and Hollister wear Apple Watches.