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Table 3 Results of hierarchical regression analyses explaining moderate-to-vigorous physical activity in boys (n = 149)

From: The relative influence of demographic, individual, social, and environmental factors on physical activity among boys and girls

  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**
R 2 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
  1. *P < 0.10, **P < 0.05, ***P < 0.001
  2. BMI = body mass index
  3. 1Physical activity equipment availability and accessibility summary score
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