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Table 2 Lipoprotein levels in the intervention group (portable pedal machines – PPMs) and in the control group (normal desk) at baseline (t0) and after 3 months (t1)

From: Effects of portable pedal machines at work on lipoprotein subfraction profile in sedentary workers – the REMOVE study

 

t0

t1

Time effect (intra group comparisons)

Changes between groups

Interaction (time × group)

Total cholesterol, g/l

     

 Intervention (PPMs)

1.90 ± 0.39

1.83 ± 0.39

0.055

0.014

0.017**

 Controls (normal desk)

1.81 ± 0.22

1.88 ± 0.27

0.12

Triglycerides, g/l

     

 Intervention (PPMs)

0.79 ± 0.33

0.77 ± 0.31

0.83

0.30

0.57

 Controls (normal desk)

0.68 ± 0.27

0.70 ± 0.20

0.53

VLDL, mg/dl

     

 Intervention (PPMs)

35.6 ± 7.3

36.4 ± 10.4

0.99

0.73

0.66

 Controls (normal desk)

34.9 ± 8.1

33.7 ± 6.0

0.99

Total IDL, mg/dl

     

 Intervention (PPMs)

42.6 ± 12.1

48.0 ± 17.5

0.21

0.99

0.65

 Controls (normal desk)

46.3 ± 9.8

45.7 ± 11.4

0.53

IDL-A, mg/dl

     

 Intervention (PPMs)

16.1 ± 4.9

21.1 ± 8.8

0.08

0.47

0.18

 Controls (normal desk)

18.9 ± 5.7

19.2 ± 6.5

0.65

IDL-B, mg/dl

     

 Intervention (PPMs)

9.63 ± 2.9

10.0 ± 3.6

0.89

0.64

0.99

 Controls (normal desk)

10.2 ± 2.9

10.2 ± 3.4

0.87

IDL-C, mg/dl

     

 Intervention (PPMs)

16.9 ± 5.6

16.9 ± 7.2

0.098

0.13

0.21

 Controls (normal desk)

17.2 ± 5.2

16.3 ± 3.6

0.67

Total LDL, mg/dl

     

 Intervention (PPMs)

95.5 ± 27.8

95.4 ± 29.5

0.11

0.007

0.012*

 Controls (normal desk)

92.9 ± 14.7

98.7 ± 19.0

0.076

LDL size, Ångström 10− 10 m

    

 Intervention (PPMs)

271.9 ± 2.5

272.8 ± 1.9

0.037*

0.054

0.027*

 Controls (normal desk)

272.5 ± 1.7

271.8 ± 1.5

0.52

Large LDL (1–2), mg/dl

     

 Intervention (PPMs)

50.9 ± 17.5

46.1 ± 15.1

0.050*

0.005

0.001***

 Controls (normal desk)

45.5 ± 10.2

51.1 ± 10.8

0.025*

Small dense LDL [3,4,5,6,7], mg/dl

     

 Intervention (PPMs)

1.81 ± 1.97

1.13 ± 1.36

0.11

0.13

0.046*

 Controls (normal desk)

1.23 ± 1.54

1.92 ± 1.44

0.59

Total HDL, mg/dl

     

 Intervention (PPMs)

52.2 ± 8.5

52.5 ± 7.7

0.84

0.040

0.07

 Controls (normal desk)

49.5 ± 5.8

52.1 ± 6.6

0.041*

Large HDL, mg/dl

     

 Intervention (PPMs)

21.8 ± 10.8

21.5 ± 7.6

0.75

0.98

0.64

 Controls (normal desk)

19.9 ± 7.5

20.3 ± 5.7

0.81

Intermediate HDL, mg/dl

    

 Intervention (PPMs)

27.3 ± 5.0

27.7 ± 3.9

0.75

0.82

0.42

 Controls (normal desk)

25.4 ± 2.4

26.7 ± 2.4

0.28

Small HDL, mg/dl

     

 Intervention (PPMs)

8.63 ± 2.87

7.76 ± 2.91

0.15

0.60

0.97

 Controls (normal desk)

9.86 ± 2.32

9.20 ± 1.66

0.09

  1. The time effect i.e. intra-group comparisons between t0 and t1 in each group are presented using p-values of paired Student t-test or paired Wilcoxon test if the t-test was not applicable. Between groups comparisons for delta (value at t1 – value at t0) are presented using a Student or Mann-Whitney test if applicable. The interaction (time x group) is presented using the crude model (sensitivity analyses are presented in Table 3). * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001
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Lipids in Health and Disease

ISSN: 1476-511X