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Table 1 Descriptive characteristics (mean (SD)) of participants includeded in the main analyses of temporal trends in physical activity (i.e.with ≥2 days of valid of accelerometer data) by agegroup, cohort and sex (n = 8186)a

From: Temporal trends in physical activity levels across more than a decade – a national physical activity surveillance system among Norwegian children and adolescents

 

n a

Age (yrs.)

Height (cm)

Weight (kg)

BMI (kg.m−2)

WC (cm)

Socioeconomic status b

      

Low (%)

Medium (%)

High (%)

Missing (%)

BOYS

 6-y-olds

  2011

494 (475)

6.6 (0.4)

122.2 (5.8)

24.0 (3.7)

16.0 (1.6)

54.8 (4.2)

4.5%

33.2%

61.1%

1.2%

  2018

411 (403)

6.5 (0.4)

121.5 (5.5)

23.4 (3.6)

15.8 (1.6)*

54.6 (4.0)

2.9%

20.9%

60.1%

16.1%

 9-y-olds

  2005

599 (593)

9.6 (0.4)

139.9 (6.2)

33.9 (6.3)

17.2 (2.4)

62.1 (7.2)

9.7%

34.1%

44.1%

12.2%

  2011

652 (630)

9.6 (0.4)

138.7 (6.8)

34.0 (7.0)

17.6 (2.8)

60.8 (6.7)*

5.8%

39.1%

53.4%

1.7%

  2018

607 (597)

9.5 (0.4)

139.2 (6.3)

33.9 (6.5)

17.4 (2.5)

60.9 (6.2)

1.2%

17.0%

61.8%

20.1%

 15-y-olds

  2005

340 (334)

15.6 (0.4)

175.6 (7.1)

65.2 (12.8)

21.1 (3.7)

75.5 (9.4)

5.6%

32.9%

34.7%

26.8%

  2011

480 (430)

15.2 (0.6)*

173.2 (8.0)*

62.3 (12.0)*

20.7 (3.3)

73.1 (8.7)*

7.3%

38.1%

50.4%

4.2%

  2018

491 (444)

15.4 (0.4)**

175.1 (7.4)**

63.5 (11.3)

20.6 (3.0)

72.7 (6.9)*

2.9%

15.1%

56.4%

25.7%

GIRLS

 6-y-olds

  2011

510 (493)

6.6 (0.4)

120.9 (5.4)

23.8 (4.2)

16.2 (2.0)

54.4 (5.0)

5.3%

32.2%

60.6%

2.0%

  2018

427 (412)

6.5 (0.4)

120.7 (5.3)

23.3 (3.6)

15.9 (1.7)**

53.8 (4.3)

2.3%

15.9%

64.4%

17.3%

 9-y-olds

  2005

524 (518)

9.6 (0.4)

138.4 (6.8)

34.0 (7.1)

17.6 (2.7)

63.3 (7.7)

6.7%

38.4%

45.0%

9.9%

  2011

692 (679)

9.6 (0.4)

138.0 (6.5)

33.7 (6.8)

17.6 (2.7)

59.4 (6.5)*

7.4%

35.3%

54.9%

2.5%

  2018

613 (594)

9.5 (0.4)

138.3 (6.5)

33.8 (7.0)

17.5 (2.6)

59.6 (6.6)*

2.6%

20.7%

57.1%

19.6%.

 15-y-olds

  2005

360 (356)

15.6 (0.4)

165.6 (6.5)

58.0 (8.7)

21.1 (2.8)

73.3 (6.9)

8.3%

36.9%

34.7%

20.0%

  2011

489 (422)

15.2 (0.6)*

165.0 (6.2)

57.4 (9.5)

21.1 (3.1)

69.2 (6.7)*

6.1%

38.2%

53.0%

2.7%

  2018

497 (457)

15.4 (0.4)**

165.4 (6.1)

58.3 (9.9)

21.3 (3.3)

68.8 (6.9)*

3.6%

13.3%

58.8%

24.4%

  1. Abbreviations: yrs. years, BMI body mass index, WC waist circumference
  2. * Significantly different from 2005 (from 2011 in 6-y-olds) (p ≤ 0.049)
  3. ** Significantly different from 2005 & 2011 (p < 0.01)
  4. a n varies for the different anthropometric measurements and is lowest (in parenthesis) for WC except in 15-y-old boys (weight) and 15-y-old girls (BMI)
  5. b Based on parental education level (the parent with the highest attained education level), with low = primary school or lower secondary school, middle = high school (vocational or general studies), and high = University College or University degree. Note that parental education levels are based on self-reports in 2005 and 2018, and from linkage with registry data (Statistics Norway) in 2011
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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