Table 2

Bivariate correlations between moderate-to-vigorous physical activity and independent variables, by gender

Boys

(n = 149)

Girls

(n = 145)

Total

(n = 294)


r


Demographic variables

Age, years

-0.23*

-0.05

-0.13*

Race/ethnicity

0.06

-0.08

0.001

Parent education

0.02

0.03

0.04

Free or reduced price lunch

0.08

0.11

0.10

BMI z-score

-0.05

0.02

-0.02

Physical maturation

-0.20*

-0.05

-0.22**

Individual variables

Self-efficacy

0.29**

0.06

0.20**

Enjoyment

0.13

0.12

0.14*

Barriers

-0.02

-0.20*

-0.15*

Social variables

Parent support

0.22*

0.09

0.15*

Peer support

0.26*

0.13

0.21**

Parent physical activity

0.01

0.03

0.003

Environmental variables

Home PA equipment1

0.26*

0.04

0.21**

Temperature

0.27**

0.08

0.18*

Precipitation

0.11

0.09

0.10

Snow

0.04

0.07

0.06

Neighborhood safety

-0.06

0.04

-0.05

Walking infrastructure

-0.01

0.14

0.05

Distance to park2

-0.12

-0.10

-0.11

Distance to rec center2

0.02

-0.21*

-0.03

Distance to trail2

-0.06

-0.09

-0.04

Distance to school attended2

0.05

-0.28**

-0.12*

Walkability index3

-0.03

0.28**

0.09


*P < 0.05, **P < 0.001

BMI = body mass index

1Physical activity equipment availability and accessibility summary score

2Distance in kilometers

3Sum of z-scores of residential, intersection, and employment density variables

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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