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Table 3 Percentage of time spent in different types of activities on a school day, comparing wheelchair-using youth with SB to typically developing peers

From: Physical activity in wheelchair-using youth with spina bifida: an observational study

  Youth with SB Youth who is typically developing Difference P c
Characteristics
Number of participants 32 20   
Age (years) mean (SD) 13.7 (3.2) 13.8 (2.9) −0.1 0.939
Gender (boys/girls) 20/14 10 / 10   0.580
Weight (kg) mean (SD) 52.8 (18.1) 45.7 (14.3) (n = 10) 7.1 0.258
Height (cm) mean (SD) 159.1 (19.5) 158.5 (14.5) (n = 10) 0.6 0.929
% of time physically activea 5.0 (3.5; 1.2–12.6) 12.2 (6.1; 6.9–18.3) −7.2 0.000
Median (IQR; min-max)
• Walking 0.0 (0.0; 0.0–6.4) 8.3 (6.2; 4.7–13.6)   
• Running 0.0 (0.0; 0.0–0.0) 0.1 (0.2; 0.0–0.8)
• Wheeling 3.7 (2.5; 0.9–6.7) 0.0 (0.0; 0.0–0.0)
• (Hand)biking 0.1 (2.1; 0.0–5.2) 1.2 (3.0; 0.0–8.1)
• non-cycling movement 0.1 (0.2; 0.0–3.3) 2.2 (1.5; 0.5–4.7)
% of time sedentaryb (sitting and lying) 94.3 (4.3; 78.1–98.7) 78.3 (6.3; 71.1–84.3) 16.3 0.000
Median (IQR; min-max)
% Standing 0.0 (0.7; 0.0–15.9) 8.7 (2.4; 6.3–13.5) −8.7  
Median (IQR)
  1. SB spina bifida, SD standard deviation, kg kilogram, cm centimeter, IQR Interquartile range, min minimum, max maximum
  2. aTime spent physically active = total duration of walking, running, wheeling, (hand)biking and non-cyclic moving, as a % of 24 h
  3. bTime spent sedentary = total duration of sitting and lying, as a % of 24 h
  4. cDifference in characteristics between participants with SB and typically developing children was tested with a two sample t-test (age, weight, height) and chi-square (gender). Differences in time spent physically active and time spent sedentary were analyzed with regression analyses corrected for age and gender