title: Development of Body Modification and Excessive Exercise Scales for adolescents.
abstract: The present study was designed to develop a Body Modification Scale (BMS) to measure body change among adolescents and to modify an Excessive Exercise Scale (EES) into a shorter form for adolescents. Two hundred and twenty-one girls and 192 boys from Grades 7 to 10 completed the BMS and the EES. Factor analysis revealed three identical factors for the BMS for girls and boys: weight loss, weight gain, and muscle mass. Two identical factors for girls and boys were also revealed for the EES. Both factor structures were further validated on a separate sample of 286 adolescents (140 girls, 146 boys). The BMS and EES demonstrated excellent reliability (alpha > .86) and high test-retest reliability (alpha > .82) over 1 month. Good concurrent validity was also found for the weight loss factor of the BMS. These findings demonstrate the utility of these two scales for use with adolescents.
authors.affiliation: School of Psychology, Deakin University, Burwood, Victoria, Australia. maritam@deakin.edu.au
authors.forename: Marita P
authors.initials: MP
authors.lastname: McCabe
authors.forename: Maureen A
authors.initials: MA
authors.lastname: Vincent
mesh_terms: D000293:Adolescent; D001828:Body Image; D002648:Child; D015444:Exercise / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D011594:Psychometrics; D015203:Reproducibility of Results; D012737:Sex Factors; D011795:Surveys and Questionnaires; D015431:Weight Loss / Q000502:physiology*