One recent study, conducted in 2020

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After two years of research, the group with the bracelets lost less weight than the group without them. The scientists concluded that the activity tracker does not provide any weight loss benefits.

Another experiment lasted eight weeks and involved 78 people. The researchers wanted to find out which method of losing weight was more effective: with a trainer, with a tracker, or with both. The subjects were divided into three groups:

The first ones lost weight with the help of a trainer: once a week during an hour-long session, the trainer talked about nutrition, proper sleep, and other things necessary for losing weight. The participants were also given booklets about diet and weight loss strategies. They independently controlled their lifestyle.
The second group monitored their activity and weight daily using trackers.
The third combined the methods of the first two: met with a trainer and used bracelets.
There were no significant differences in weight loss between the groups. The researchers concluded that using the tracker consistently was as effective as monitoring activity with a trainer. The third group, which worked out with a trainer weekly and used the tracker daily, showed the best results.

by the University of Sydney, found that using activity trackers increased malta number data physical activity in people without chronic conditions. People who used a tracker walked more — an average of 2,000 steps per day.

Detect diseases with a smart bracelet
A Stanford University study says that smartwatches and fitness bands can help detect Covid-19.

Researchers analyzed fitness tracker data from 32 people with coronavirus and found that 26 of them had changes in heart rate, number of steps per day, or sleep time. Thus, symptoms of the diseases could be detected early based on extreme increases in resting heart rate.


Participants shared data from their fitness trackers. The bottom two panels show the change in a person's heart rate before and after symptoms appeared.

A similar experiment was conducted at Mount Sinai Medical Center. For six months, 297 healthcare workers were required to wear smartwatches for at least eight hours a day and report their condition daily.