Skip to main content

Table 1 Descriptive statistics and main physical activity variables

From: Differences in physical activity and sedentary time in relation to weight in 8–9 year old children

 

All (n = 301)

Boys (n = 155)

Girls (n = 146)

P value¥

Age (years)

8.6 (0.4)

8.7 (0.4)

8.8 (0.6)

> 0.05

Height (cm)

134.0 (6.7)

134.2 (6.8)

133.9 (6.7)

> 0.05

Weight (kg)

30.5 (6.9)

30.7 (7.0)

30.3 (6.8)

> 0.05

BMI SDS*

0.15 (1.32)

0.20 (1.38)

0.09 (1.25)

> 0.05

Waist SDS±

0.87 (1.04)

0.97 (1.05)

0.77 (1.02)

> 0.05

Fat mass index (kg/m1.28)

4.4 (3.0)

4.2 (3.0)

4.6 (3.0)

> 0.05

Socioeconomic status

4 (4)

4 (3)

4 (3)

> 0.05

Ethnicity

46

48

44

> 0.05v

Total activity (counts/min)

606 (154)

663 (150)

544 (134)

< 0.001

Sedentary activity$ (min/day)

330 (119)

321 (109)

338 (128)

> 0.05

MVPA+ (min/day)

66 (28)

78 (29)

53 (19)

< 0.001

Percentage meeting recommended activity level

52

72

30

< 0.001v

  1. All values are mean (SD) unless otherwise stated
  2. *Body mass index standard deviation score
  3. ± Waist standard deviation score
  4. Measured using the Townsend index score with imputed values from school postcode, UK average is zero with positive score representing higher than average deprivation
  5. Percentage white
  6. $Cut points used: Sedentary < 100; Light 100–1999; Moderate 2000–3999; Vigorous 4000–6999; Very Vigorous 7000+
  7. +Moderate to vigorous physical activity
  8. Recommended activity level ≥ 60 min of MVPA activity daily
  9. ¥ Independent samples T-test
  10. Chi squared test