Adolescents' self-efficacy to overcome barriers to Physical Activity Scale.
This paper describes a revised measure of self-efficacy to overcome barriers to moderate and vigorous physical activity in a sample of 484 high school students in Toronto, Ontario. The students had a mean age of 15.3 years. Principal axis factoring with oblique rotation yielded five factors: self-efficacy to overcome internal, harassment, physical environment, social environment, and responsibilities barriers. Two problematic items were removed, which resulted in a 22-item measure. Subsequent analyses were conducted on responses to this shortened measure. Confirmatory factor analysis supported the five-factor model and demonstrated age- and sex-invariance. The subscales had good internal consistency reliability. Structural regressions demonstrated a strong relationship between the resulting factors and a physical activity measure (energy expenditure), showing predictive validity.
Department of Family Relations and Applied Nutrition at the University of Guelph, College of Social and Applied Human Sciences, Ontario, Canada. dwyer@uoguelph.ca
John J M
JJ
Dwyer
Tala
T
Chulak
Scott
S
Maitland
Kenneth R
KR
Allison
Daria C
DC
Lysy
Guy E J
GE
Faulkner
Judy
J
Sheeshka
D000293:Adolescent; D000294:Adolescent Behavior; D001294:Attitude to Health; D016009:Chi-Square Distribution; D015444:Exercise; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009864:Ontario; D011594:Psychometrics; D015203:Reproducibility of Results; D020377:Self Efficacy; D011795:Surveys and Questionnaires