The ARIA WiFi Smart Scale uses the Bioelectrical Impedance Analysis (BIA) technique to measure body fat composition by sending a low, safe electrical current throughout the body (“foot-to-foot”). The current passes through muscle tissue with lower resistance than through fat tissue. The resistance in fat tissue is termed “bioelectrical impedance” and is the principle of operation for the ARIA scale measurement. The ARIA scale displays the measurement results to the user on a large display that is backlit and easy to read from the standing position. Measurement results include body weight (lb, kg, stone) and body fat (percentage). The scale stores up to 16 readings. The scale is battery operated (4-AA batteries). Prior to use, the user creates a confidential profile on the Fitbit website (which is only available to the user unless affirmatively shared by the user with other users). The scale has an added functionality of wirelessly transmitting the readings to the user’s profile for trending. The user profile is stored locally on the scale, so that the functionality of the scale is autonomous after initial setup.Up to eight (8) users may create profiles to use a single scale. The scale has an automatic recognition function, where it recognizes the user based on the user’s previous weight and profile. If two users have similar body weight profiles, they will be prompted to identify themselves using their initials at the time of weight measurement (selection by tapping the appropriate side of the scale).The complementary interface with the Fitbit website allows the user to view their body weight and body fat trend data over time.
An electronic device designed to estimate body composition (i.e., percent body fat, lean, bone, and/or hydration) with regards to bioelectrical impedance analysis (BIA) and often personal characteristics (e.g., age, gender, height, weight). It may be in the form of a unit with electrodes applied to the surface of the patient’s body, or a scale(s) placed on the floor and upon which the patient stands to measure total body weight. Both types perform BIA by passing a low electrical current through the body; personal characteristics may be manually entered. Data are analysed to provide measurements that may include body mass index (BMI), fat/muscle/bone mass, and total body water percent.
fitbit.com