Table 3.  Results of simultaneous multiple regression analyses for change in voluntary physical activity (n=146).
 

b

R

R2

R2adj

F2,73

p

Model 1

  

.53

.29

.27

14.08

<.001

D General self

.10

        

.22

D Physical appearance

.27

        

<.001

D Physical self-concept

.26

        

.001

D Exerc. barriers self-efficacy

.16

        

.05

Model 2

  

.36

.13

.12

10.55

<.001

D Tension

-.18

        

.03

D Vigor

.30

        

<.001

Model 3

  

.60

.36

.33

12.83

<.001

D General self

.08

        

.29

D Physical appearance

.23

        

.002

D Physical self-concept

.25

        

.001

D Exerc. barriers self-efficacy

.17

        

.03

D Tension

-.19

        

.01

D Vigor

.18

        

.02
The delta symbol (D) denotes change in score from baseline to week 12.