![]() On the other hand, the Fitbit sometimes thought people were in light sleep when they weren’t actually. It missed about half of the deep sleep and around a third of the REM sleep. The Fitbit often didn’t catch as much deep sleep and rapid eye movement (REM) sleep as the polysomnography did. But when they compared the Fitbit to the polysomnography results, they saw some big differences. The researchers found that the Fitbit was pretty similar to the actigraph in many ways. This test checks lots of things while you sleep, like what your brain is doing, how your eyes move, how your muscles work, and your heart rhythm. However, they also used a more complicated test called polysomnography. It was designed to check their sleep in one night using the Fitbit and the actigraph. So, there was this study with 42 people conducted at Monash University who also had trouble sleeping. If it wasn’t please keep reading! Issue With Inaccurate Results From Fitbit Sleep Tracking So if you are question was just: Is Fitbit Sleep Tracking Accurate? You have your answer. When in reality or in the Lab in order to accurately tell the correct stages, brain waves are measured, which a Fitbit tracker can never do. Fitbit presents to you Sleeping Stages using just two sensors like we have discussed above. Over the years many researches have spent thousands of hours in lab testing new Fitbit models against the clinical medical equipment and every time a same theme has been painted on results: Fluctuations Within Fitbit’s Sleep Tracking Model. ![]() The sleep score that you see on your Fitbit tracker is not what it seems to present itself. But does that simplicity translates into accuracy? In theory it feels very simple and believe me even in practice it is, and it is one of the elegant thing about it: Simplicity. Second is the PPG method deployed using greenlightwhich is employed to find the heart rate of a person. However, just for the sake of argument right now, you should know this:įitbit tracks sleep using two sensors, the first is accelerometer which gives your tracker information regarding your motion. ![]() If you want to, you can see it for yourself. We have covered the working of Fitbit Sleep Mode in details here. Or at least a place where accuracy shouldn’t be questioned. Meaning that Fitbit should’ve reached the primal status by now. But this is not taken from yesterday, it has been a while. When asked about the Fitbit’s greater vision this is what the lead scientist Conor Heneghan had to say. “We are researching ways in which Fitbit can help assess conditions such as cardiovascular disease, sleep problems, stress, pre-diabetes and diabetes, and help users with interventions for chronic conditions.” Fitbit Lead Research Scientist Conor Heneghan
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