The first is that none of this is really new. There are a couple ways to look at this “new” Fitbit and sleep-tracking software. At the same time, Fitbit is still considered the market leader in activity trackers. The company’s holiday quarter earnings were so disappointing that it prereleased its results in late January, and announced that it would be laying off more than 100 employees. The new Alta HR wristband is coming at a challenging time for Fitbit. Fitbit says it will continue to sell the older Alta wristband, the one that doesn’t track heart rate, as well as the Flex wristband and the Charge 2. It will ship in early April, around the same time the new sleep-tracking software rolls out to the Alta HR, the Charge 2 wristband, and the Blaze watch. ![]() The new Alta HR costs $150, $20 more than last year’s Alta. And the insights are supposed to draw a direct line between your daily activities and your sleep patterns, which has been, in theory, a kind of holy grail for these consumer wearables. Now Fitbit will take motion data, along with heart rate variability, to show light, deep, and REM sleep stages. Fitbit wristbands have automatically tracked sleep for a couple years now, logging more than three billion hours of sleep, but the devices would only show wearers information on how long they slept. Photo: Fitbitįitbit is also trying to lure in (and retain) more customers by offering more detailed sleep tracking data, or, what the company is labeling Sleep Stages and Sleep Insights. Yeun said the new Alta will also last seven days per battery charge. But Fitbit has been developing the Alta HR for nearly a year now, according to the company’s R&D director Shelten Yuen, working with Texas Instruments to try to shrink its heart rate monitor to a size that would fit in the tiny wristband, which is 25 percent smaller than the Charge 2. This makes the Alta HR the fourth Fitbit product line to include heart rate sensors the Charge, Blaze, and Surge also have them. These results suggest FBA-HR cannot replace EEG-based measurements of sleep and wake in the diagnostic assessment of suspected CDH, and that improvements in device performance are required prior to adoption in clinical or research settings.įitbit activity tracker hypersomnolence sleep sleepiness.Fitbit had to develop a new chip in order to fit its heart rate technology into the tiny Alta wristband Device performance did not differ appreciably among diagnostic subgroups. The device failed to detect any nocturnal SOREMPs. ![]() FBA-HR displayed significant overestimation of total sleep time (11.6 min), sleep efficiency (1.98%) and duration of deep sleep (18.2 min). FBA-HR-detected sleep-onset rapid eye movement periods (SOREMPs) were compared against PSG SOMREMPs. ![]() FBA-HR all sleep (AS), light sleep (LS PSG N1 + N2), deep sleep (DS PSG N3) and REMS classification was evaluated using epoch-by-epoch comparisons. ![]() FBA-HR sleep variable quantification was assessed using Bland-Altman analysis. Forty-nine patients (46 female mean age, 30.3 ± 9.84 years) underwent ad libitum PSG with concurrent use of the FBA-HR. This investigation aimed to determine the ability of a current, multi-sensor tracker, Fitbit Alta HR (FBA-HR), to quantify and classify sleep in patients with suspected CDH relative to polysomnography (PSG). Current multi-sensor activity trackers that integrate accelerometry and heart rate are purported to accurately quantify sleep time and REMS however, their utility in suspected CDH has not been established. Measuring sleep duration and early onset rapid eye movement sleep (REMS) is critical in the assessment of suspected central disorders of hypersomnolence (CDH).
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