Sports interests and abilities as contributors to self-concept in junior high school boys.
D000293:Adolescent; D000704:Analysis of Variance; D001076:Aptitude; D001290:Attitude; D006801:Humans; D008297:Male; D009042:Motivation; D009048:Motor Skills; D010549:Personal Satisfaction; D010809:Physical Fitness; D012649:Self Concept; D013177:Sports