Effect of creatine derivatives on the motor coordination in the rotarod test in mice. The results are presented as arithmetic mean (mean) ± SEM. Statistically significant differences: * р ≤ 0.05 – between the 1st and 3rd week in the group treated with CrLys 3 g/kg/day; ** р ≤ 0.01 – between the 3rd weeks in the control group and CrM 1.5 g/kg/day; **** р ≤ 0.0001 – between the 1st and 3rd week in the group treated with CrM 1.5 g/kg/day and between the 3rd weeks in CrM 1.5 g/kg/day and the group receiving CrM 3 g/kg/day.