in situ measurements of s-spsg from various body positions during different exercising routines and thermal exposure. a) various mounting positions on the body; forearm, upper arm, chest, upper back, lower back and thigh, b) optical images of the measurement of s-spsg from cycling exercise from various mounting positions on the body. measured pressures c) from different conditions (cycling, exercising at elliptical, treadmill and thermal exposure) and regions of the body from a 34 year old male volunteer d) from three different volunteers during cycling exercise. scale bar represents 10 mm in b.