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Table 6 Mean percentages MVPA per observation moment (SD); n, and partial correlations of MVPA with time-on-task

From: Moderate-to-vigorous physically active academic lessons and academic engagement in children with and without a social disadvantage: a within subject experimental design

  Start Midway End
  Lesson 1.1 Lesson 1.3 Lesson 2.1* Lesson 2.3 Lesson 3.1
SDC 55.3(28.1); 14 60.0(26.6); 15 56.6(33.3); 11 47.2(31.3); 14 61.7(31.9); 12
r = 0.08 r = 0.09 r = 0.14 r = −0.01 r = 0.15
non-SDC 68.0(26.7); 44 67.3(26.1); 44 62.2(33.0); 27 51.1(34.3); 45 52.4(35.2); 42
r = −0.03 r = 0.08 r = 0.11 r = 0.17 r = −0.15
Total 65.0(27.4); 58 65.5(26.2); 59 60.5(32.7); 38 50.2(33.4); 59 54.5(34.4); 54
r = 0.03 r = 0.09 r = 0.11 r = 0.16 r = − 0.07
  1. *Heart rate measurements of one school were missing because of technical errors.