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Table 3 School characteristics at baseline

From: A school-based intervention improves physical fitness in Ecuadorian adolescents: a cluster-randomized controlled trial

 

n a

Intervention group

Control group

  

Mean (SD)

Mean (SD)

Age

20

12.8 (0.2)

12.9 (0.3)

Female (%)

20

66.1

57.6

Physical fitness

   

Cardiopulmonary fitness

   

20 m shuttle run (stage)

20

2.5 (0.2)

2.7 (0.3)

20 m shuttle run (min)

20

1.7 (0.2)

1.9 (0.4)

Speed-agility

   

Speed shuttle run (s)

20

24.6 (11.2)

24.5 (6.6)

Plate tapping (s)

20

14.6 (2.6)

14.2 (5.9)

Flexibility

   

Sit and reach (cm)

20

20.1 (1.4)

20.5 (1.2)

Muscle strength and endurance

   

Sit-up (number/30s)

20

12.0 (0.9)

12.6 (0.8)

Vertical jump (cm)

20

25.4 (1.5)

26.1 (1.1)

Bent arm hang (s)

20

6.0 (23.1)

6.1 (19.6)

Handgrip (kgf)

20

18.4 (0.7)

19.3 (0.8)

Balance

   

Flamingo (trying/min)

20

17.9 (1.3)

18.5 (1.4)

Screen time

 

Median (IQR)

Median (IQR)

TV hours in the week (h/day)

20

1.0 (1.0 – 1.5)

1.3 (1.0 – 1.5)

TV hours in the weekend (h/day)

20

2.0 (2.0 -3.0)

2.0 (2.0 -2.0)

Internet hours in the week (h/day)

20

1.0 (0.5 -1.0)

0.5 (0.4 -1.0)

Internet hours in the weekend (h/day)

20

0.5 (0.0 -1.0)

0.3 (0.0 -1.0)

Video games in the week (h/day)

20

0.0 (0–0)

0.0 (0–0 )

Video games in the weekend (h/day)

20

0.0 (0.0 – 0.1)

0.0 (0.0 – 0.1)

Total screen time week (h/day)

20

2.3 (2.0 – 2.5)

2.0 (1.9 – 2.3)

Total screen time weekend (h/day)

20

3.5 (3.0 – 4.0)

3.5 (3.0 – 4.1)

% Sedentary week (% screen time >3 h/day)

20

31.2 (11.1)

28.9 (9.6)

% Sedentary weekend (% screen time >3 h/day)

20

50.9 (8.6)

50.2 (9.4)

Accelerometer data

 

Mean (SD)

Mean (SD)

Total PA (counts/day)

18

308630.8 (38106.2)

274071.9 (46469.4)

Total PA (CPM/day)

18

381.4 (68.6)

348.4 (71.4)

Sedentary time (min/day)

18

480.0 (78.7)

492.8 (46.4)

Light PA (min/day)

18

223.6 (21.1)

191.1 (34.5)

Moderate-vigorous PA (min/day)

18

122.7 (21.0)

106.7 (16.2)

% who meet the PA recommendation (% >60 min MVPA/day)

18

95.0 (6.9)

93.6 (7.1)

Anthropometry

   

Body mass index (kg/m^2)

20

19.8 (0.5)

19.7 (0.4)

Body mass index Z-score

20

0.3 (0.2)

0.3 (0.1)

Overweight prevalence (%)b

20

20.8 (7.5)

19.6 (3.6)

  1. aTotal number of clusters.
  2. bOverweight and obese combined.
  3. CPM: counts per minute; IQR: interquartile range; MVPA: moderate to vigorous physical activity; PA: physical activity; SD: standard deviation.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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