초록 ▼

Method and simplified, lower cost apparatus for determining percent fat in a body wherein near-infrared radiation from at least one, and preferably a single pair of IREDs is transmitted into the body to achieve optical interactance between the body and the near-infrared radiation. Optical absorption

Method and simplified, lower cost apparatus for determining percent fat in a body wherein near-infrared radiation from at least one, and preferably a single pair of IREDs is transmitted into the body to achieve optical interactance between the body and the near-infrared radiation. Optical absorption by the body at only one bandwidth of the near-infrared radiation is measured. The measured absorption at the one bandwidth of near-infrared radiation is utilized to quantitatively determine the fat content of the body. Data on a plurality of physical parameters of the body, such as height, weight, exercise level, sex, race, waist-to-hip measurement and arm circumference, can be utilized along with the measured near-infrared absorption in the quantitative determination of body fat content. Advantageously, there is no need for labor-intensive factory calibration of each production unit.

대표청구항 ▼

A method for determining percent fat in a body, comprising: (a) providing a near-infrared quantitative instrument comprising (i) at least one point source of near-infrared radiation; (ii) a near-infrared radiation detector capable of providing an electrical signal upon detection of near-infrared rad

A method for determining percent fat in a body, comprising: (a) providing a near-infrared quantitative instrument comprising (i) at least one point source of near-infrared radiation; (ii) a near-infrared radiation detector capable of providing an electrical signal upon detection of near-infrared radiation; (iii) means for preventing near-infrared radiation from said at least one point source from impinging directly on said detector; (iv) locating means for placing said at least one point source against a body to be tested so as to introduce near-infrared radiation into said body, wherein said locating means positions said detector for receiving near-infrared radiation from said at least one point source that interacts with said body and for providing an electrical signal corresponding to the fat content of said body; and (v) means for converting the electrical signal corresponding to the fat content of the body into a readout indicative of the percent fat of the body; (b) placing the at least one point source against a body to be tested with the detector or positioned for receiving near-infrared radiation that interacts with said body; (c) transmitting near-infrared radiation into said body; (d) detecting near-infrared radiation which interacted with said body; and (e) providing a readout of percent body fat corresponding to an electrical signal indicative of near-infrared absorption provided by said detector.