Adolescents%26apos; Self-Efficacy to Overcome Barriers to Physical Activity Scale

作者：Dwyer John J M^*; Chulak Tala; Maitland Scott; Allison Kenneth R; Lysy Daria C; Faulkner Guy E J; Sheeshka Judy

来源：Research Quarterly for Exercise and Sport, 2012, 83(4): 513-521.

• factor analysis
• validity
• reliability

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.

• 出版日期2012-12