An apparatus (100) for testing and exercising pelvic floor musculature, the apparatus comprising an elongate housing (101) adapted for a pelvic floor aperture. The housing (101) accommodates an oscillator (120) and an accelerometer (130) connected to a signal processor (140) configured for communicating signals representative of values read from the accelerometer (130). A result is calculated from an applied oscillation and a response measured, and used for characterizing the musculature. In one embodiment the frequency resulting in the greatest response from the musculature is measured, and this frequency is applied during exercise.