Skip to main content

Table 2 Objectively measured habitual PA and sedentary behaviour for intervention and control groups

From: Children, parents and pets exercising together (CPET): exploratory randomised controlled trial

 

Baseline

Follow-up

10-week differences

 

Intervention mean (SD)

Control mean (SD)

Intervention mean (SD)

Control mean (SD)

Difference in change between intervention and control (95% CI)

P value**

Effect size (Cohen’s d)

Children

N = 17

N = 13

N = 17

N = 13

   

Total volume (mean cpm)*

521 (112)

524 (144)

548 (216)

521 (147)

30 (-23, 82)

0.62

0.21

% time being sedentary†

80.9 (3.4)

80.2 (4.9)

80.7 (5.0)

80.1 (5.3)

-0.1 (-1.8, 2.0)

0.90

0.02

% time in light PA†

16.0 (2.9)

16.7 (3.8)

15.9 (3.6)

16.5 (4.3)

0.1 (-1.5, 1.7)

0.84

0.02

% time in MVPA†

3.1 (1.6)

3.1 (1.9)

3.3 (2.7)

3.0 (1.3)

0.3 (-0.3, 0.9)

0.60

0.20

% time sitting†

56.5 (5.4)

57.0 (7.3)

57.3 (7.7)

56.5 (9.1)

1.3 (-1.6, 4.3)

0.70

0.17

Length of sitting bouts (minutes)

5 (0.5)

6 (1.4)

6 (4.9)

6 (2.1)

1.0 (-0.2. 2.2)

0.66

0.30

Breaks per sitting hour

12.5 (1.4)

12.1 (3.3)

12.0 (2.9)

12.5 (2.9)

-0.1 (-1.3, 1.1)

0.60

0.03

% of wear time in bouts > 30 minutes

12.3 (4.9)

15.8 (7.6)

15.2 (15.7)

17.4 (9.7)

1.3 (-3.0, 5.7)

0.90

0.11

Parents

N = 15

N = 12

N = 15

N = 12

   

Total volume (mean cpm)*

470 (156)

380 (126)

447 (154)

394 (113)

-37 (-62, -13)

0.30

0.60

% time being sedentary§

59.9 (7.7)

58.7 (8.8)

61.0 (7.2)

58.1 (6.70)

2.2 (0., 4.3)

0.18

0.42

% time in light PA§

33.7 (6.8)

36.3 (7.3)

32.2 (6.3)

36.6 (5.3)

-1.9 (-4.0, 0.2)

0.10

0.35

% time in MVPA§

6.9 (3.0)

5.0 (2.9)

6.9 (3.2)

5.3 (2.4)

-0.3 (-1.0, 0.4)

0.96

0.19

Length of sedentary bouts (minutes)

6 (1.2)

6 (2.0)

7 (1.5)

6 (1.6)

1.0 (0.3, 1.2)

0.11

0.60

Breaks per sedentary hour

10.3 (1.8)

10.9 (2.6)

10.0 (1.9)

11.2 (2.2)

0.6 (-0.1, 1.3)

0.20

0.33

% of wear time in outs > 30 minutes

16.2 (6.)

17.6 (9.7)

19.3 (8.9)

16.3 (6.7)

4.4 (1.3, 7.5)

0.18

0.56

Dogs

N = 15

N = 12

N = 15

N = 12

   

Total volume (mean cpm)*

606 (169)

636 (208)

631 (217)

582 (147)

79 (35, 123)

0.09

0.71

% time being sedentary¶

85.8 (3.6)

85.6 (4.3)

84.9 (5.2)

85.9 (3.6)

-1.2 (-2.3, -0.1)

0.31

0.45

% time in light-moderate PA¶

12.5 (3.2)

12.7 (3.7)

13.4 (4.3)

12.8 (3.1)

0.9 (-0.2, 1.9)

0.47

0.34

% time in vigorous PA¶

1.74 (1.0)

1.7 (1.0)

1.8 (1.3)

1.4 (0.8)

0.4 (0.2, 0.6)

0.08

0.70

  1. *cpm = count per minute.
  2. †Sedentary <800 accelerometer cpm; light PA 800–3200 accelerometer cpm; MVPA ≥3200 accelerometer cpm; sitting <150 accelerometer cpm.
  3. §Sedentary <100 accelerometer cpm; light PA 100–1951 accelerometer cpm; MVPA ≥1952 accelerometer cpm.
  4. ¶Sedentary <1352 accelerometer cpm; light-moderate PA 1352–5695 accelerometer cpm; vigorous PA ≥5696 accelerometer cpm.
  5. **Intervention and control groups were compared using analysis of covariance.
  6. Mean duration of accelerometry monitoring at baseline in children was 6.8 days (SD 0.6) with mean duration of 12.2 h (SD 1.6) per day. At follow up mean duration of accelerometry monitoring in children was 6.0 days (SD 1.1) with mean duration of 12.3 h (SD 1.8) per day. Mean duration of accelerometry monitoring in parents at baseline was 6.7 days (SD 0.9) with mean duration of 14.3 h (SD 1.3) per day. At follow up mean duration of accelerometry monitoring in parents was 6.5 days (SD 1.2) with mean duration of 14.0 h (SD 2.0) per day. Mean duration of accelerometry monitoring in dogs at baseline was 6.8 days (SD 0.9) with mean duration of 16.8 h (SD 0.5) per day. At follow up mean duration of accelerometry monitoring in dogs was 6.9 days (SD 0.9) with mean duration of 16.6 h (SD 1.0) per day.
  7. Of the 28 families recruited, 1 parent and 1 dog (from the same family) returned invalid accelerometry data at baseline and were excluded from analysis.
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us