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Table 1 Descriptive variables from IDEFICS and I. Family, for the whole sample and stratified by sex

From: Longitudinal association of childhood physical activity and physical fitness with physical activity in adolescence: insights from the IDEFICS/I.Family study

 

All (n = 4310)

Male (n = 2149)

Female (n = 2161)

n

Mean

SD

Range

N

Mean

SD

Range

N

Mean

SD

Range

IDEFICS T0/T1 (baseline)

 Age [years]

4310

7.5

1.0

2.40–11.7

2149

7.5

1.0

3.3–11.6

2161

7.6

1.0

2.40–11.7

 BMI z-score

4310

0.51

1.2

−5.3–4.6

2149

0.51

1.2

−5.3–4.6

2161

0.51

1.1

−4.7–4.0

 BMI Category (Cole)

  Underweight/Normal

3237

   

1620

   

1617

   

  Overweight/Obese

1073

   

529

   

544

   

 ISCED Category

  Low

2091

   

1031

   

1060

   

  High

2040

   

1027

   

1013

   

  Missing

179

   

91

   

88

   

 Valid Wear Time [min./day]

1273

762

143

434–1335

604

768

149

435–1335

669

757

136

441–1257

 MVPA [min./ day]

1273

53

24

1–145

604

59

25

3–145

669

48

21

1–125

 WHO PA guidelines met?a

  Yes

448

   

283

   

165

   

  No

825

   

321

   

504

   

  Missing

3037

   

1545

   

1492

   

 FB [touchdowns]

3338

7.8

6.9

5–52

1563

9.0

7.5

2–52

1775

6.8

6.1

2–39

 SAR [cm]

4230

20.1

5.5

0–41

2101

18.9

5.4

0–35

2129

21.3

5.3

0–41

 HGS [N]

4166

107.9

29.0

24.5–261.3

2071

113.5

29.9

24.5–261.3

2095

102.2

26.9

24.5–238.8

 SLJ [cm]

4208

106

23

10–197

2089

111

24

10–197

2119

102

22

24–188

 40mS [km/h]

2106

9.4

1.2

6.6–15.5

1029

9.2

1.2

6.6–14.0

1077

9.5

1.1

6.8–15.5

 20mSRT [VO2 Max]

2387

47.7

2.8

37–60

1159

48.2

3.0

38–60

1228

47.1

2.5

37–56

i.Family T3 (follow-up)

 Age [years]

4310

12.6

1.3

7.7–16.2

2149

12.6

1.3

9.2–15.8

2161

12.7

1.3

7.7–16.2

 Years between T0/T1 and T3

4310

5.1

1.0

3.0–8.8

2149

5.1

1.0

3.0–8.8

2161

5.1

1.0

3.0–7.0

 Pubertal Status

  Pre/Early Pubertal

1751

   

870

   

881

   

  Pubertal

2260

   

1110

   

1150

   

  Missing

299

   

169

   

130

   

 Valid Wear Time [min./day]

1886

780

101

436–1350

916

777

106

453–1350

970

783

96

436–1262

 MVPA Time [min./day]

1886

47

20

0–135

916

51

212

0–135

970

43

18

6–125

 WHO PA guidelines met?a

  Yes

442

   

279

   

163

   

  No

1444

   

638

   

807

   

  Missing

2424

   

1232

   

1191

   
  1. aWHO PA guidelines for 5–17-year-olds of 60 minutes of MVPA. Classified using average MVPA values