title: Swimming, competence, and personality change.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001076:Aptitude; D002648:Child; D006801:Humans; D008297:Male; D010552:Personality Assessment; D010553:Personality Development; D012649:Self Concept; D012959:Socioeconomic Factors; D013550:Swimming