A method for obtaining physiological muscle values of a user by a programmable accelerometer. In a first step, a user selects the type of test to be carried out. In a second step, a sequence of acceleration data is measured by the portable accelerometer during the test. In a third step, the end of the test is determined by the accelerometer by verifying a condition dependent on the type of test selected, and a sound signal is emitted. Finally, a value calculated on the basis of said successive measurements of the acceleration and dependent on the type of test selected is displayed.