Is there any human model/dummy human available on the market, which serves the purpose of testing on-body antennas? Unlike those simple human models in appareal shops, materials involved in human body should be approximated fairly to enable accurate characterization of on-body antennas.
To make an such characterization is very complex if the result should repeatable. A normal body varies a lot in size, shape due to movement, woman child or man, what types of clothes and environment. I know one company where one of the employee is their standard for anechoic chamber measurements were a full body is required. He is very talent in sitting still for a long periods.
The phantom head SAM is famous, and he is accepted as a standard in several types of measurements. Torso and other body parts such as hands are sold by companies that also sells equipment for SAR and anechoic measurements. HUGO, a simulated full body.
Most common are molds of different body parts filled with liquid that electrical correspond to actual part. Main content in this fluid is common sugar with a concentration corresponding to dielectric value for actual frequency and body part.
Dielectric values does also depend on if it is man/woman/child/thickness/length so it is no exact science.
One of several dielectric body measurement.