In recent years, the popularity of smart hardware has extended to various fields, including the emergence of smart body fat scales, which give hope to those who want to achieve a perfect body shape. Smart body fat scales can detect multiple body parameters, and people can make targeted weight loss plans based on their own body fat characteristics. So how are these body fat parameters obtained? In the following article, we will take you into the world of smart body fat scales and unveil the mystery of body fat percentage, subcutaneous fat, visceral fat, muscle mass, basal metabolic rate, bone weight, and water content.
The working principle of body fat analysis is to use bioelectrical impedance technology, which adds ITO conductive film and conductive metal sheets to the surface of the scale. When a person walks barefoot on the scale, a closed loop electrode is formed. Since fat does not conduct electricity but water does, various body parameters can be calculated by measuring the current value, resistance value, and weight value.
Bioelectrical impedance analysis method: Since non-fat tissues (containing more water) in human tissues have smaller resistance than fat tissues, when a specific frequency signal passes through the human body, the current will mainly pass through non-fat tissues. The proportion of current through intracellular and extracellular pathways is related to frequency. At low frequency, due to the existence of membrane capacitance, the internal resistance of the cell is quite large, and the current basically only passes through the extracellular pathway. With the increase of current frequency, the proportion of current passing through the intracellular pathway will increase. Based on the above principle, resistance can be calculated, and accurate measurements of parameters such as body fat, muscle mass, and bone weight can be obtained using scientific formulas. In fact, common parameters such as body fat percentage, water content, muscle mass, and bone mass are actually "calculated". For example, the fat content requires four parameters, including weight, gender, age, and height, which are calculated according to the formula. Weight is obtained from the measurement, while gender, age, and height need to be entered by the user.
Currently, the sample model is mainly divided into three types, namely, the sample model for people of European and American descent, the sample model for people of Asian descent, and the sample model for people who have undergone special training such as athletes. The sample model for people of Asian descent is more consistent with the user's real physical condition.
Why do you need to stand on the scale to measure with smart body fat scales instead of using handheld measurement tools? Handheld body fat measurement tools use the body's resistance with both hands to calculate the fat percentage, so the body fat measured is only for the hands. In contrast, the body fat scale measures the body fat by asking the user to stand on the scale with both feet, covering 80% of the body's range. Combined with big data modeling, the body's real fat content can be accurately presented.
Measuring at a specific time
The data measured by the bioelectrical impedance method of smart body fat scales will have a large margin of error, such as different data obtained when you have just taken a shower, finished eating, or finished exercising. A more meaningful approach is to measure at a fixed time every day, such as after exercise or before bedtime. Looking at the long-term trend of data can help determine one's body condition and fitness effectiveness.