Method for controlling exercise load variations in a strength exercise machine and exercise machine implementing such method

A strength exercise machine, comprising:

• at least one movable element operable by a user to execute a strength exercise by moving a respective exercise load;
• at least one electric motor operatively connected to said at least one movable element, the at least one electric motor being configured to exert, on the at least one movable element, a resistive force representative of an exercise load which the user may handle during execution of the strength exercise by actuating the at least one movable element;
• a data processing unit operatively connected to said at least one electric moto, said data processing unit being configured to execute at a current time instant ti of a plurality of successive time instants t1, t2, . . . , tN, where 1<i<N, the steps of:
• s1) detecting, by a data processing unit of the strength exercise machine, an exercise position within a set range of motion of a user;
• s2) checking, by the data processing unit of the strength exercise machine,
• if a previously set trigger condition of an exercise load variation comprises the detected exercise position of the user within the set range of motion;
• if a previously set trigger condition of an exercise load variation comprises the detected exercise position of the user within a respective range of motion:
• s3) setting, by the data processing unit of the strength exercise machine, a trigger condition of an exercise load variation as current trigger condition of exercise load variation, said trigger condition of an exercise load variation comprising at least one respective first speed threshold for execution of motion by the user;
• s4) comparing, by the data processing unit of the strength exercise machine, a speed for execution of motion by the user at the current time instant ti with the first speed threshold for the execution of the motion by the user comprised in the current trigger condition of exercise load variation,
• if the speed for the execution of the motion by the user is less than or equal to the first speed threshold:
• s5) reducing, by the data processing unit of the strength exercise machine, an exercise load of a set exercise load variation associated with a number of exercise load variations executed by the data processing unit of the strength exercise machine up to the current time instant ti.