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Table 4 Stepwise multiple regression analysis academic performance predicted by α- and γ-tocopherol, total antioxidant capacity, body mass index, and physical activity of study participants (n = 120)

From: Association of physical activity, vitamin E levels, and total antioxidant capacity with academic performance and executive functions of adolescents

 

Academic achievement

Executive function

Β

R2

β

R2

Age

0.025*

0.421

0.312**

0.751

Gender

0.051*

 

0.055**

 

BMI (kg/m2)

−0.041*

 

−0.035**

 

α-tocopherol (mg/L)

0.071*

 

0.085**

 

γ-tocopherol (mg/L)

0.021*

 

0.028**

 

TAC (nmol /μL)

0.048*

 

0.065**

 

Physical activity score

0.092*

 

0.049**

 
  1. Estimated standardized regression coefficients (β) and variance explained (R2) are presented, * p < 0.05; ** p < 0.01