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Table 5 Anthropometric, blood pressure and questionnaire measurements

From: Stand Out in Class: restructuring the classroom environment to reduce sitting time – findings from a pilot cluster randomised controlled trial

  Baseline Follow-up Change
  Control
(n = 90)
Intervention
(n = 84)
Control
(n = 85)
Intervention
(n = 83)
Control
(n = 85)
Intervention
(n = 81)
Height (cm) 140.5 138.3 144.0 141.3 3.3 2.9
(6.6) (6.2) (6.8) (6.4) (1.7) (1.0)
Body mass (kg) 36.3 35.0 39.2 37.7 3.0 2.7
(9.5) (7.8) (10.6) (8.7) (1.7) (1.7)
Percent body fat – Girlsa 24.4 23.6 23.7 25.0 −0.7 0.5
(8.4) (8.1) (9.1) (8.3) (2.1) (2.8)
Percent body fat - Boysa 20.6 19.9 20.7 19.0 0.4 −0.9
(8.9) (6.9) (8.9) (6.6) (2.6) (2.4)
BMI (kg/m2) 18.2 18.2 18.7 18.8 0.6 0.6
(4.0) (3.3) (4.1) (3.5) (0.8) (0.7)
Systolic blood pressure (mmHg)b 102.5 102.8 107.3 110.5 5.1 10.2
(11.8) (15.2) (11.7) (11.2) (15.8) (17.8)
Diastolic blood pressure (mmHg)b 66.1 67.3 66.3 68.4 0.2 2.4
(10.2) (14.1) (9.5) (9.7) (12.1) (16.2)
Engagement and Disaffection with Learning questionnaire sub-scale scores (child reported)
  Control
(n = 90)
Intervention
(n = 82)
Control
(n = 86)
Intervention
(n = 83)
Control
(n = 86)
Intervention
(n = 80)
Overall Engagement 3.4 (0.5) 3.4 (0.5) 3.3 (0.6) 3.3 (0.5) −0.1 (0.6) −0.1 (0.5)
Overall Disaffection 3.1 (0.7) 3.1 (0.7) 3.2 (0.7) 3.1 (0.6) 0.1 (0.7) 0.0 (0.6)
Strengths and Difficulties questionnaire (teacher reported)
  Control
(n = 83)
Intervention
(n = 78)
Control
(n = 83)
Intervention
(n = 84)
Control
(n = 81)
Intervention
(n = 78)
Total difficulties score 6.2 (5.7) 9.2 (7.6) 6.9 (6.0) 7.8 (6.6) 0.6 (4.6) −1.3 (4.5)
  1. Data are reported as the mean (SD). aPercent body fat sample sizes: girls, control n = 40, intervention n = 35; boys, control n = 50; intervention n = 49. bThe sample size for the change in blood pressure measurements reduced to 54 control participants and 49 intervention participants.