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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

 BaselineFollow-upChange
 Control
(n = 90)
Intervention
(n = 84)
Control
(n = 85)
Intervention
(n = 83)
Control
(n = 85)
Intervention
(n = 81)
Height (cm)140.5138.3144.0141.33.32.9
(6.6)(6.2)(6.8)(6.4)(1.7)(1.0)
Body mass (kg)36.335.039.237.73.02.7
(9.5)(7.8)(10.6)(8.7)(1.7)(1.7)
Percent body fat – Girlsa24.423.623.725.0−0.70.5
(8.4)(8.1)(9.1)(8.3)(2.1)(2.8)
Percent body fat - Boysa20.619.920.719.00.4−0.9
(8.9)(6.9)(8.9)(6.6)(2.6)(2.4)
BMI (kg/m2)18.218.218.718.80.60.6
(4.0)(3.3)(4.1)(3.5)(0.8)(0.7)
Systolic blood pressure (mmHg)b102.5102.8107.3110.55.110.2
(11.8)(15.2)(11.7)(11.2)(15.8)(17.8)
Diastolic blood pressure (mmHg)b66.167.366.368.40.22.4
(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 Engagement3.4 (0.5)3.4 (0.5)3.3 (0.6)3.3 (0.5)−0.1 (0.6)−0.1 (0.5)
Overall Disaffection3.1 (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 score6.2 (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.