Figure 6. Temperature in various knee-extensor and hamstring muscles as well as subcutaneous tissue during intense knee-extensor exercise.

A, mean increases in the two additional experiments when thermistors were placed in vastus intermedius (v.i.) and tensor fasciae latae (t.f.l.) in addition to other knee-extensors. B, data from another additional experiment. Three thermistor probes were placed in different hamstring muscles (biceps femoris, semitendinosus and semimembranosus), and one in the subcutaneous fat (≈5 mm under the skin) next to a thermistor probe placed in the rectus femoris (depth ≈3 cm).