For those who want your sleep analyzed, docs will often order a polysomnography, which analyzes an individual’s oxygen degree, coronary heart price, respiratory, eye motion, and leg motion whereas concurrently working an electroencephalogram (EEG).
An EEG exhibits your brainwaves by completely different levels and cycles of sleep. A wearable smartwatch or health tracker in your wrist, nevertheless, is much out of your mind.
The most well-liked wearables by Fitbit, Apple, Garmin, and Samsung accumulate a mix of the next measurements: coronary heart price and coronary heart price variability (HRV), motion, breaths per minute, and pores and skin temperature. Gadgets that observe sleep cycles use an algorithm to hypothesize your sleep cycles based mostly on the information.
A 2017 examine in contrast a polysomnography with the efficiency of a Fitbit Cost 2 in 35 adults. Researchers discovered the Fitbit gadget detected sleep onset with 96% accuracy however overshot time spent asleep by 9 minutes on common. Within the examine, the Fitbit detected gentle sleep with 81% accuracy, deep sleep with solely 49% accuracy, and REM sleep with 74% accuracy.
A newer examine printed in April of 2022 in contrast the efficiency of Fitbit Alta HR to outcomes of an EEG carried out concurrently on 40 school athletes whereas sleeping. This examine discovered FItBit knowledge to satisfactorily observe sleep onset, time spent asleep, and sleep cycles. Fitbit is usually a useful gizmo for athletes’ sleep administration.
Whereas not 100% correct, the Fitbit knowledge had a robust correlation with polysomnography knowledge.