Body fat scale is based on the principle of electrical impedance measurement, which is reliable.
It has been found that when a certain frequency of electrical signals is passed through the body, the fat portion of the body has a higher "impedance" value than muscle and other tissues of the body. When a safe and specific frequency of electrical signals is used to pass through the body, the electrical signals will change to different degrees depending on the "impedance" value of the body.
Muscle contains more blood and other water, and can conduct electricity, while fat is not conductive. Because the channel conductor of electric current in the body is muscle, from the difficulty of passing electric current, you can know the weight of the muscle, from which you can judge, in the proportion of body weight, the proportion of fat is higher in people with less muscle.
The electronic fat scale uses the electrode sheet on the surface of the scale to contact the user's legs to measure the body resistance (bio-impedance) through a certain safe current.
Then, based on the input user data and the measured body resistance, the body fat percentage, body water percentage, body muscle percentage, bone weight and other body components can be measured more accurately by using the formula that we have obtained from extensive experiments.
Normal reference range of body fat percentage:
The normal range of body fat percentage for adults is 20% to 25% for females and 15% to 18% for males, and if the body fat percentage is too high and the body weight exceeds more than 20% of the normal value, then it can be regarded as obese. The body fat rate of athletes can be determined with the sports program. Generally male athletes for 7% to 15%, female athletes for 12% -25%.
Note should be taken at the same time diet therapy and exercise therapy to lose weight, reduce calorie intake, through exercise to increase calorie consumption, to achieve the effect of weight loss. Without exercise, you can only rely on dieting to lose weight, which will only reduce muscle and not fat, but will also reduce the basal metabolism and make it easier to regain weight.