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One of the functions on which the manufacturers of smart watches (how to increase battery life) invest more is about the health monitoringwith sensors that measure the heartbeatthe percentage of oxygenL’ECGit stress and even the body temperature.
But to ordinary users usually these numbers relatively interestingwhat i want to know is lo general state of health, and lo and behold Apple and Samsung have developed ways to please their customers. The Korean giant, for example, has equipped its own Galaxy Watch 4 And Watch 5 with bioelectrical impedance analysis (BIA), which measures thebody mass index and therefore the state of physical fitness. But how accurate is this measurement? One scientific study put it to the test, and the results were a lot comforting.
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When your Galaxy Watch 4 measures BIA, provides a report on several key statistics: lean mass, fat mass, skeletal muscle mass, basal metabolic rate And body water total.
This index is shown in a very simple way with colored indicators and spurs people to increase movement.
But of course all of this makes sense if the data is reliable, and that’s what the researchers of Louisiana State Universityof the Pennington Biomedical Research Center he was born in Cancer Center of theUniversity of Hawaii they tried to understand in their item.
The study collected overall a multiethnic group from 109 participants75 of whom completed the entire protocol, and measured their BI extension with Galaxy Watch 4comparing it to clinical measurements performed using the DXA scan (dual-energy X-ray absorptiometry) and in duplicate with laboratory-grade octapolar bioelectrical impedance analysis.
The study found that having these measurements readily available contributed to to improve people’s understanding of their behavior and how to improve it, and in 60% of cases they increased theirs physical activity and reduced the time of inactivity.
But how much are they accurate these measurements? A lot, according to the researchers, who have revealed a correlation between the 97% and the 98% with the results of the two reference methods. The bottom line is that Samsung’s smartwatch is capable of make stable, reliable body composition measurements And accurate, with a comparable accuracy, albeit lower than that of laboratory measurements.
If you own a Galaxy Watch 4 or Watch 5Samsung offers you several suggestions to improve the accuracy of your measurements:
- Measure at the same time of day
- Measure on an empty stomach
- Measure after going to the bathroom
- Measure when you don’t have your period
- Measure before performing activities that cause an increase in body temperature, such as exercising, taking a shower or going to the sauna
- Measure after removing metal objects from your body, such as a necklace
Below you can see how to run a BIA check with Galaxy Watch.
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