Table 3

Results of hierarchical regression analyses explaining moderate-to-vigorous physical activity in boys (n = 149)

Model 1

Model 2

Model 3

Full Model


Blocks of variables

Standardized Beta


Demographic

Age, years

-0.15

-0.16

-0.14

-0.12

Race/ethnicity

0.06

0.03

0.04

0.03

Parent education

0.05

0.08

0.07

0.04

Reduced price lunch

0.08

0.03

0.03

0.07

BMI z-score

-0.02

-0.02

-0.03

0.01

Physical maturation

-0.10

-0.09

-0.13

-0.13

Individual

Self-efficacy

0.30***

0.20**

0.15*

Social

Parent Support

0.02

-0.05

Peer Support

0.19**

0.19**

Environmental

Home PA equipment1

0.18**

Temperature

0.21**

R2

0.07

0.15

0.19

0.25

Adj R2

0.03

0.11

0.13

0.19

Δ Adj R2

0.08

0.02

0.06

Model significance

F (6, 140) = 1.71

P = 0.12

F (7, 139) = 3.57

P < 0.001

F (9, 137) = 3.47

P < 0.001

F (11, 135) = 4.05

P < 0.0001


*P < 0.10, **P < 0.05, ***P < 0.001

BMI = body mass index

1Physical activity equipment availability and accessibility summary score

Patnode et al. International Journal of Behavioral Nutrition and Physical Activity 2010 7:79   doi:10.1186/1479-5868-7-79

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