Table 1

Mediation Model using Hierarchical Regression Analyses to Predict Adolescents' Body Satisfaction at age 16 with Fathers' Encouragement for Physical Activity and Adolescents' Leisure-time Physical Activity, Adjusting for Adolescents' Body Mass Index at age 15

Variable

F change

Df

R² change

β¹

β²

Step 1: Predicting Age 16 Adolescents' Body Satisfaction with Fathers' Encouragement for Physical Activity Measured at Age 15

Block 1

6.54**

326

0.02

BMI

-0.14**

-0.14**

Block 2

3.82*

325

0.01

Father encouragement PA

0.11*

Step 2: Predicting Age 15 Adolescents' Leisure-time Exercise Behavior with Fathers' Encouragement for Physical Activity Measured at Age 15

Block 1

0.36

309

0.01

BMI

0.03

0.03

Block 2

8.65**

308

0.03

Father encouragement PA

0.17**

Step 3: Predicting Age 16 Adolescent Body Satisfaction with Adolescent Leisure-time Exercise Behavior Measured at Age 15

Block 1

5.61*

308

0.02

BMI

-0.13*

-0.14**

Block 2

6.15**

307

0.02

LTEQ

0.14**

Step 4: Predicting Age 16 Adolescent Body Satisfaction with Fathers' Encouragement for Physical Activity and Adolescent Leisure-time Exercise Behavior Measured at Age 15

Block 1

6.59**

300

0.02

BMI

-0.15**

-0.15**

Block 2

4.18*

298

0.03

Father encouragement PA

0.08

LTEQ

0.13*

Note.β^1-2 = standardized regression coefficients; Df = degrees of freedom. *p < .05; **p < .01; Abbreviations. BMI = body mass index; LTEQ = Leisure-Time Exercise Questionnaire

Savage et al. International Journal of Behavioral Nutrition and Physical Activity 2009 6:90   doi:10.1186/1479-5868-6-90