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Table 2 Mean daily MVPA minutes by semester and school randomization status

From: The longitudinal association between objectively-measured school-day physical activity and academic achievement in US elementary school students

 

School Randomization Status

 

Semester

Intervention

Control

p-value

 

Mean (SD)

Mean (SD)

 

Grade 4 Fall (T1)

22.6 (9.5)

19.6 (8.5)

<  0.001

Grade 4 Spring (T2)

24.1 (10.4)

19.6 (9.1)

< 0.001

Grade 5 Fall (T3)

21.5 (9.0)

16.3 (8.0)

< 0.001