Cronbach’s Alpha
Spanish sample (N = 613)
Luxembourgish sample (N = 752)
Subscale
Boys (N = 309)
Girls (N = 304)
Boys (N = 343)
Girls (N = 409)
Attitude toward PA
.910
.901
.913
.914
Perceived parental socialization
.931
.932
.925
.926
Perceived physical competence
.942
.939
.952
.950
Perceived resources support
.726
.738
.713
.722