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Table 2 Condition and effects of experimental conditions (reduced sitting versus typical) on cardiometabolic outcomes (mean +/− SD) of total study participants (n = 18)

From: Acute effects of reducing sitting time in adolescents: a randomized cross-over study

Cardiometabolic health indicator

‘Typical’ school day

‘Reduced sitting’ school day

Condition effect

 

Pre

Post

Difference

(pre-post)

Pre

Post

Difference

(pre-post)

Difference

(reduced -typical)

P- value

Effect Size**

Figural Intersection task (Cognitive function)d

6.06 ± 0.10

5.89 ± 1.71

−0.17 ± 0.15

5.71 ± 1.53

6.18 ± 1.47

0.47 ± 1.231

0.64 ± 0.15

0.149

0.54

ApolipoproteinA1/

ApolipoproteinB (g/L)b

0.52 ± 0.20

0.51 ± 0.20

−0.01 ± 0.03

0.52 ± 0.16

0.49 ± 0.15

−0.03 ± 0.03

−0.02 ± 0.03

0.027

−0.67

Interleukin-6 (fg/ml)c

453.71 ± 433.60

1010.53 ± 683.35

556.82 ± 776.23

1945.58 ± 2597.66

2556.97 ± 4185.09

611.39 ± 2410.06

−54.56 ± 2750.40

0.227

0.03

Total cholesterol (mmol/L) a

4.36 ± 1.08

4.34 ± 1.08

−0.01 ± 0.23

4.40 ± 0.82

4.20 ± 0.84

−0.20 ± 0.29

−0.19 ± 0.27

0.283

−0.71

Total cholesterol/HDL ratio (mmol/L)a

3.14 ± 1.19

3.32 ± 1.29

0.18 ± 0.23

3.00 ± 0.90

3.44 ± 1.04

0.44 ± 0.68

0.25 ± 0.53

0.251

0.51

HDL-cholesterol (mmol/L) a

1.46 ± 0.41

1.39 ± 0.39

−0.07 ± 0.09

1.52 ± 0.36

1.22 ± 0.44

−0.30 ± 0.50

−0.23 ± 0.50

0.117

−0.66

LDL-cholesterol (mmol/L) a

2.46 ± 1.07

2.34 ± 1.13

−0.12 ± 0.19

2.52 ± 0.83

2.44 ± 0.95

−0.08 ± 0.47

0.04 ± 0.43

0.065

0.12

Non-HDLC (mmol/L) a

2.82 ± 1.08

2.90 ± 1.07

0.08 ± 0.18

2.86 ± 0.85

2.95 ± 0.91

0.09 ± 0.39

−0.01 ± 0.39

0.901

0.03

Triglycerides (mmol/L) a

0.77 ± 0.33

1.21 ± 0.73

0.44 ± 0.45

0.72 ± 0.21

1.12 ± 0.49

0.40 ± 0.45

0.05 ± 0.19

0.718

0.09

Fasting glucose (mmol/L) a

5.23 ± 0.39

4.92 ± 0.51

−0.31 ± 0.32

5.22 ± 0.48

4.95 ± 0.59

−0.27 ± 0.58

0.04 ± 0.77

0.813

−0.09

S-insulin (mU/L) a

14.22 ± 12.70

28.90 ± 33.78

14.68 ± 21.74

10.90 ± 3.24

24.92 ± 16.78

14.02 ± 16.47

0.65 ± 12.25

0.913

0.03

Systolic BP (mmHg)*

115.15 ± 13.76

109.78 ± 11.13

−5.39 ± 10.826

117 ± 13.75

112.72 ± 13.57

−4.28 ± 15.56

1.11 ± 13.40

0.801

0.08

Diastolic BP (mmHg)*

69.67 ± 7.57

65.61 ± 8.29

−4.06 ± 2.6

72.28 ± 10.94

70.78 ± 10.27

−1.50 ± 13.64

2.56 ± 12.40

0.490

0.26

  1. * ln transformed prior to analysis
  2. ^ P values for interleukin-6 and LDL-cholesterol were 0.968 and 0.071 respectively with removal of single extreme outlying value
  3. **Effect sizes were calculated on complete cases only for the differences between mean effects
  4. a n = 13
  5. b n = 14
  6. c n = 10
  7. d n = 17
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