Efecto de la edad relativa en la coordinación motriz, agilidad y fuerza muscular en escolares

Introduction: The difference in chronological age between members of the same group can have an effect on the motor development of boys and girls.Objective: to analyze the effect of the month of birth (relative age) on motor coordination, agil-ity and strength in schoolchildren aged 6 to 11 years.Methodology: 473 schoolchildren participated (255 boys and 218 girls) aged between 6 and 11 years (mean age = 9.11 ± 1.67 years) corresponding to a public Primary Education center. Agil-ity was evaluated through the 4x10 test, strength through the countermovement jump and hor-izontal jump, and motor coordination through the 3JS test. Relative age was categorized by quarters based on date of birth.Results: relative age did not show a significant effect on the variables evaluated (p=.198). Sex showed a main effect on all these variables (p<.001) since in girls,differences were found be-tween those born in the first and fourth quarters of the year. Boys showed a higher level of motor coordination, agility and muscular strength compared to girls of the same trimester of birth.Conclusions: relative age did not appear to have an effect on the level of motor coordination, agility and muscular strength in the schoolchildren aged 6 to 11 years studied, mainly in boys.