{"id":2343,"date":"2021-01-17T09:00:35","date_gmt":"2021-01-17T09:00:35","guid":{"rendered":"https:\/\/thenextweb.com\/?p=1334245"},"modified":"2021-01-17T09:00:35","modified_gmt":"2021-01-17T09:00:35","slug":"how-sleep-trackers-can-actually-ruin-your-sleep","status":"publish","type":"post","link":"https:\/\/www.londonchiropracter.com\/?p=2343","title":{"rendered":"How sleep trackers can actually ruin your sleep"},"content":{"rendered":"\n

An estimated one in three people<\/a> report regular sleep complaints. So it\u2019s hardly surprising people are more concerned than ever about getting enough sleep. This blossoming interest has seen an explosion of sleep trackers which measure how many hours of sleep you get each night.<\/p>\n

As we sleep, we go through cycles of \u201cdeep,\u201d \u201clight,\u201d and \u201crapid eye movement\u201d (REM) sleep. The \u201cdeep\u201d portion of our sleep is mainly what leaves us feeling refreshed the next day. Most sleep trackers are a watch worn on the wrist, and work by monitoring your body movements as you sleep to determine how much time you probably spent awake versus asleep. Some devices also look at heart rate changes during sleeping to estimate how much time you spent in each sleep cycle.<\/p>\n

Despite their popularity, only a few studies have investigated how accurate sleep devices are. So far, research has found that compared to polysomnography tests \u2013 which experts use to diagnose sleep disorders \u2013 sleep trackers are only accurate 78% of the time<\/a> when identifying sleep versus wakefulness. This accuracy drops to around 38%<\/a> when estimating how long it took participants to fall asleep.<\/p>\n

Polysomnography tests are the most accurate because they track a person\u2019s brain waves, heart rate, breathing, blood oxygen levels, and body and eye movements during sleep through electrodes attached to the skin and scalp. Analyzing brain wave patterns is the only definitive way of knowing whether someone is awake or asleep, and to know what stage of sleep they\u2019re in.<\/p>\n

But since sleep trackers are worn on the wrist, they make their estimates of nightly sleep by measuring body movement and sometimes heart rate data. As we move frequently during all stages of sleep, movement provides few clues about what sleep stage we\u2019re in. Many sleep devices also fail to differentiate one stage of sleep from another based on motion alone<\/a>.<\/p>\n

Given many consumer sleep devices haven\u2019t been compared against polysomnography tests, it\u2019s difficult to determine their accuracy rate<\/a>. Furthermore, the algorithms which companies use<\/a> to make predictions about sleep are unknown, making it difficult for scientists to identify whether the assumptions made by the sleep devices are valid.<\/p>\n

Studies also show sleep devices underperform in people with insomnia. People with insomnia tend to remain very still in bed in an attempt to fall asleep. But as sleep trackers only measure movement, one study found watches were unable to differentiate sleep from wakefulness<\/a> in people with insomnia.<\/p>\n

Watches that incorporate heart rate data<\/a> tend to be slightly more accurate<\/a> when measuring sleep duration because heart rate fluctuates<\/a> during different sleep stages. However, even in devices that do track heart rate, many experts are still uncertain of their accuracy because of the limited research on them, and because of the differences between each device. For example, one study of heart rate sleep trackers showed that two consumer devices tended to underestimate the amount of deep sleep wearers obtained by as much as 46 minutes<\/a>.<\/p>\n

[Read: How Netflix shapes mainstream culture, explained by data<\/span><\/a>]<\/em><\/p>\n

Sleep anxiety<\/h2>\n

Ultimately, this leads to the question of whether knowing about our sleep is actually beneficial to us. After all, one of the best ways to stay awake is to try really hard to go to sleep<\/a>. It sounds counterintuitive, but we see this clinically in patients with chronic insomnia, for whom excessive pre-occupation with sleep causes anxiety and low mood over sleep loss \u2013 leading to further sleeplessness<\/a>.<\/p>\n

\n
\"Knowing
Credit: Vic \/ Flickr<\/a><\/figcaption>
<\/i><\/a>Knowing how much \u2013 or little \u2013 sleep we got could cause anxiety.<\/span><\/figcaption><\/figure>\n<\/figcaption><\/figure>\n

A study published by our research group<\/a> showed this effect can be worsened by sleep watches. Participants were given sleep watches and asked to complete measures of mood, daytime thinking processes and sleepiness at regular periods throughout the day. However, the \u201csleep score\u201d given by their watches was manipulated to show either an increased or a decreased quality of sleep. The amount and quality of sleep participants in both groups got was the same.<\/p>\n

The study found that those who were told they had a poor night\u2019s sleep showed lower mood, difficulties with daytime thinking processes and increased sleepiness. Those who were told they had a great night\u2019s sleep showed the opposite.<\/p>\n

This shows us that data from these sleep trackers could change your emotional state and concentration levels during the day \u2013 even if the readings are accurate. Given people who experience poor sleep may be more likely to use sleep tracking devices, this could be a concern as it may potentially worsen mental health issues<\/a>.<\/p>\n

While few studies have examined this link so far, one report highlighted more patients are seeking treatment for perceived sleep difficulties<\/a> as a result of feedback from sleep trackers. Even when such complaints are refuted by a polysomnography test, watches continue to provide a source of sleep-related anxiety. Since studies have shown overuse of wearable devices<\/a> (such as those used during exercise) increase health anxiety and depression<\/a>, there are concerns sleep devices may have a similar effect.<\/p>\n

While sleep devices might be useful for those who have generally good sleep but are interested in tracking or establishing a better routine, people who have poor sleep or mental health conditions may want to avoid them. But the best metric for measuring how good your sleep was is to see how you feel each day. If you\u2019re tired and struggling to concentrate, then going to bed a bit earlier each night may help you feel more rested \u2013 no device necessary.\"The<\/p>\n

This article by Matthew Reid<\/a>, Post Doctoral Researcher, Sleep and Circadian Neurosciences, University of Oxford<\/a>, is republished from The Conversation<\/a> under a Creative Commons license. Read the original article<\/a>.<\/em><\/p>\n

Did you know we have a newsletter all about consumer tech? It\u2019s called Plugged In \u2013 and you can subscribe to it right here<\/a>. <\/i><\/p>\n

Published January 17, 2021 \u2014 09:00 UTC <\/p>\n

Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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