Mobile system allowing adaptation of the runner's cadence

A device for synchronizing a rhythmic stimulation with a biological variability, comprising:

• a calculation unit configured to:
• detect a movement dynamics on a user, using a sensor linked to the calculation unit;
• select in a music library a music file based on the movement dynamics and a tempo associated with each music file of the music library;
• determine frequency and phase parameters with a coupling term from the movement dynamics using Kuramoto model and parameters comprising:
• a coupling strength;
• a parameter defining a maximum and minimum frequency deviation for a fraction of an unmodified tempo of the selected music file;
• a target frequency, and
• a maximum phase deviation between the unmodified tempo of the selected music file and the target frequency;
• and
• play the selected music file while adjusting the unmodified tempo of the selected music file and/or phase of the selected music file as a function of the determined frequency and phase parameters.