Table 1

Baseline characteristics of study participants

Characteristic

Intervention Group (n = 10)

Control Group (n = 10)


Age, yr

Mean ± SD

11 ± 1

13 ± 1

Median [1st quartile, 3rd quartile]

10.5 [10, 12]

13 [12.25, 13.75]

Gender, n (%)

Females

4 (40%)

4 (40%)

Use of all video games, minutes/day*

Mean ± SD

65 ± 55

96 ± 88

Median [1st quartile, 3rd quartile]

48 [31, 66]

80 [30, 104]

Physical activity counts measured by accelerometer, counts/minute

Mean ± SD

490 ± 188

490 ± 203

Median [1st quartile, 3rd quartile]

425 [400, 544]

418 [358, 585]

Time spent in light activity, minutes/day

Mean ± SD

635 ± 90

652 ± 134

Median [1st quartile, 3rd quartile]

670 [594, 695]

650 [522, 779]

Time spent in moderate activity, minutes/day

Mean ± SD

97 ± 48

69 ± 23

Median [1st quartile, 3rd quartile]

86 [59, 131]

70 [52, 81]

Time spent in vigorous activity, minutes/day

Mean ± SD

7 ± 8

7 ± 7

Median [1st quartile, 3rd quartile]

6 [2, 9]

3.4 [3, 11]

Self-reported physical activity

Time spent in moderate activity, minutes/day

Mean ± SD

94 ± 56

64 ± 64

Median [1st quartile, 3rd quartile]

90 [65, 125]

44 [19, 89]

Time spent in vigorous activity, minutes/day

Mean ± SD

80 ± 54

98 ± 87

Median [1st quartile, 3rd quartile]

72 [34, 118]

49 [34, 159]

PAQ-C score

Mean ± SD

3.2 ± 0.5

2.7 ± 0.8

Median [1st quartile, 3rd quartile]

3.3 [3, 3.5]

2.65 [2.2, 3]

Waist circumference, cm

Mean ± SD

73 ± 10

69 ± 11

Median [1st quartile, 3rd quartile]

74 [68, 80]

65 [64, 70]

BMI, kg/m2

Mean ± SD

20.4 ± 3.6

19.0 ± 3.6

Median [1st quartile, 3rd quartile]

20.4 [17.9, 22.2]

18.3 [16.9, 20.3]

Overweight, n (%)#

1 (10%)

4 (40%)


* Participants completed a four-day record of time spent playing electronic video games (active and inactive)

# Using cut-offs by Cole et al[22]

Note: Data presented in the table are raw data i.e. unadjusted

Ni Mhurchu et al. International Journal of Behavioral Nutrition and Physical Activity 2008 5:8   doi:10.1186/1479-5868-5-8

Open Data