Table 5.
Hierarchical Forced Entry Multiple Regression of Exercise Intention on the Theory of Planned Behavior, BMI, and Interactions with BMI
| Fchange | df | R2change | β1 | β2 | β3 | |
| (Block #1) | 43.1 | 5,348 | .38 | |||
| Instrumental Attitude | .06 | .06 | .76** | |||
| Affective Attitude | .30*** | .31*** | .13 | |||
| Subjective Norm | .02 | .01 | -.05 | |||
| Self-efficacy | .36*** | .36*** | -.41 | |||
| Perceived Control | -.02 | -.02 | .17 | |||
| (Block #2) | 0.8 | 1,347 | .00 | .04 | .31 | |
| BMI | ||||||
| (Block #3) | 4.1 | 5,342 | .04 | |||
| BMI*Instrumental Attitude | -1.60** | |||||
| BMI*Affective Attitude | .24 | |||||
| BMI*Subjective Norm | .13 | |||||
| BMI*Self-efficacy | 1.20** | |||||
| BMI*Perceived Control | -.23 | |||||
| Total Model | 22.4 | 11,342 | .42 |
* = p < .05
** = p < .01
*** = p < .001
F = F ratio
df = degrees of freedom
R2 = coefficient of determination
β1–3 = standardized regression coefficients for equations #1 to #3