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Table 2 Physical activity at follow-up by arm and comparisons between each VBI and control

From: A randomised controlled trial of three very brief interventions for physical activity in primary care

 

Motivational VBI Mean (95 % CI)

Pedometer VBI Mean (95 % CI)

Combined VBI Mean 95 % (CI)

Control Mean (95 % CI)

Motivational VBI Relative to Control: Comparison of means (95 % CI) a

Pedometer VBI Relative to Control: Comparison of means (95 % CI) a

Combined VBI Relative to Control: Comparison of means (95 % CI) a

Objective physical activity (accelerometer)

 N

54

37

52

111

   

 Counts per minute b

656

(600, 712)

659

(581, 738)

632

(590, 675)

636

(597, 674)

+20.3

(−45.0, +85.7)

+23.5

(−51.3, +98.3)

−3.1

(−69.3, +63.1)

 Step counts b

7971

(7252, 8691)

7844

(6921, 8766)

8162

(7464, 8859)

7944

(7370, 8518)

+27

(−894, +949)

−101

(−1155, +954)

+218

(−716, +1151)

 Time (min/day) in sedentary/light activity

809.9

(798.6, 821.5)

800.6

(780.2, 821.7)

804.2

(775.7, 833.6)

809.5

(790.8, 828.7)

−1.1 %

(−3.9 %, +1.7 %)

−0.7 %

(−3.9 %, +2.6 %)

−0.1 %

(−2.9 %, +2.9 %)

 Time (min/day) in moderate activity

68.4

(61.8, 75.8)

69.7

(59.5, 81.6)

72.1

(65.6, 79.3)

68.7

(62.7, 75.2)

−0.4 %

(−13.6 %, +14.8 %)

+1.5 %

(−13.7 %, +19.5 %)

+5.0 %

(−9.1 %, +21.2 %)

 Time (min/day) in vigorous activity

3.4

(2.5, 4.7)

2.5

(1.7, 3.6)

2.6

(2.0, 3.4)

2.5

(2.0, 3.0)

+40.1 %

(−1.0 %, +51.6 %)

+1.9 %

(−31.5 %, +51.6 %)

+5.3 %

(−25.9 %, +49.6 %)

 Time (min/day) in moderate or vigorous activity

75.0

(67.7, 83.0)

74.7

(64.2, 86.8)

75.8

(68.6, 83.8)

73.1

(67.0, 79.8)

+2.6 %

(−10.7 %, 17.9 %)

+2.2 %

(−12.8 %, +19.8 %)

+3.8 %

(−9.8 %, +19.5 %)

Self-reported physical activity (Recent Physical Activity Questionnaire, RPAQ)

 N c

59

43

59

120

   

 Total PAEE physical activity energy expenditure(kJ/kg/day)

39.2

(31.5, 48.9)

32.2

(26.7, 38.8)

33.0

(28.3, 38.5)

32.2

(28.2, 36.9)

+21.7 %

(−2.9 %, +52.5 %)

−0.2 %

(−22.4 %, +28.4 %)

+2.4 %

(−18.3 %, +28.3 %)

 Home-based PAEE (kJ/kg/day)

2.1

(1.6, 2.8)

2.1

(1.6, 2.8)

2.8

(2.2, 3.5)

2.3

(1.9, 2.8)

−9.5 %

(−33.6 %, +23.3 %)

−7.2 %

(−34.4 %, +31.1 %)

+19.7 %

(−12.1 %, +63.2 %)

 Work-based PAEE (kJ/kg/day)

21.2

(16.9, 26.4)

18.4

(14.6, 23.1)

17.9

(14.9, 21.5)

18.2

(15.6, 21.1)

+16.6 %

(−9.0 %, +49.4 %)

+1.1 %

(−22.7 %, +32.2 %)

−1.3 %

(−23.0 %, +26.5 %)

 Leisure-based PAEE (kJ/kg/day)

16.5

(12.4, 21.8)

8.7

(5.8, 13.2)

11.0

(8.4, 14.4)

11.0

(8.6, 14.0)

+50.3 %

(+2.1 %, +121.2 %)

−20.3 %

(−48.3 %, +22.8 %)

+0.7 %

(−31.6 %, 48.2 %)

 Commuting PAEE (kJ/kg/day)

0.4

(0.2, 0.9)

0.3

(0.1, 0.7)

0.6

(0.3, 1.2)

0.3

(0.2, 0.6)

+29.8 %

(−43.2 %, +196.8 %)

−8.5 %

(−62.8 %, +125.2 %)

78.4 %

(−21.5 %, +305.5 %)

 Screen/TV time (hours/day) b

2.71

(2.35, 3.08)

2.72

(2.32, 3.13)

3.11

(2.75, 3.47)

3.04

(2.77, 3.31)

−0.32

(−0.77, +0.12)

−0.31

(−0.81, +0.19)

+0.07

(−0.37, +0.52)

  1. aComparisons are presented unadjusted. Conclusions were unchanged on adjustment for age. b Values for these variables are means and differences from the control arm mean (with 95 % confidence interval), whereas to account for skewed distributions the PAEE and Time in activity variables are presented as relative percentage increases or decreases compared to the control arm.c Denominators (N) differed for Work based PAEE (79, 44, 35, 44) and Commuting PAEE (77, 44, 34, 45)
  2. PAEE: physical activity energy expenditure
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