In daily life, our common devices for detecting body fat are body fat scale and sebum forceps.
Body fat scale is a weighing instrument that can measure fat, moisture and so on besides weight. The principle of human body fat scale is that muscle contains more water such as blood and can conduct electricity, while fat is not. Because the channel conductor of current in the body is muscle, the weight of muscle can be known from the difficulty of current passing, so as to judge the proportion of muscle in the weight.
Sebum forceps are instruments for detecting human body fat. Its advantages are convenient to carry and simple to use, but it is necessary to calculate body fat according to the formula.
Can I measure body fat with a smart watch?
The technical principle of measuring body fat by smart watch is similar to that of human body fat scale, and the wearer's body fat is measured by bioelectrical impedance technology. Samsung conducted a clinical experiment and recruited 203 volunteers aged 65,438+08 ~ 68 at St. Mary's Hospital in Seoul. Samsung integrates the wristband and body of wearable devices into special sensors for data collection. After putting on the equipment, volunteers press the sensor on the front of their bodies with their fingers to form a current circulation with the human body, and then complete the body fat detection. The whole process is similar to measuring ECG with Apple Watch.
Samsung filed a patent on 20 15, which also indicates that Samsung may be developing a wristband with body fat measurement function, and will add a new function called "body composition" to its smart wearable products, which allows users to measure the percentage of body fat through smart watches.
According to the patent document, the watchband is equipped with electrodes. When measurement is needed, the user only needs to put two fingers at the relevant positions for bioelectrical impedance analysis (BIA), that is, the ratio of fat to water can be calculated by using low-power current, and the resistance between adipose tissue and non-adipose tissue can be analyzed.
So far, there is no small device like smart watch on the market to measure the body fat of BIA. If Samsung's patent can be realized, it will be the same as the ECG function of Apple Watch Series 4, which is a major breakthrough for wearable devices in the field of health care.