The instrument (See Fig. 1) is built around a torsion bar (1), which constitutes the elastic element of the
measurement structure. One end of the bar is fixed (2) and the other is free to move about its transverse axis (3).
The torsion bar is placed on a frame (4), a rectangular target (5) of 20 x 25 cm2 is adjustable in height and fixed to a
lever arm (5) which is fixedly connected to the elastic element whose function is to absorb incident punch energy.
A set of sensors (7) consisting of a bridge of strain gauges associated with the torsion bar (1) and two
accelerometers, one is attached to the target (6) and the other worn by the boxer inside the glove. The strain gage is
used to assess the force associated with the incident punch by the elastic element strain quantification under the
effect of the impact force. The first acceleration sensor can measure acceleration of the target at the time of impact
and after impact. On the other hand, the second accelerometer worn inside of the glove allows one to measure the
acceleration value of the boxer fist throughout the attack action as well as acceleration at the impact of his fist on
the target. It also sets detect the boxer time reaction in response to a signal stimulation.