Table 2 The percentage of time sitting, in prolonged sitting, and the number of sitting breaks in each period

Early morning

63.59 ^¥ (61.92, 65.26)

70.46 (65.37, 75.54)

< 0.01

18.55 (17.55, 19.51)

19.71 (16.72, 22.70)

0.13

1.75 (1.65, 1.85)

1.62 (1.34, 1.91)

0.08

Mid-morning

74.58 ^¥ (72.95, 76.21)

66.59 (62.72, 70.20)

< 0.01

23.98 (22.76, 25.19)

25.89 (23.27, 28.51)

0.64

2.54* (2.36, 2.71)

2.51 (2.26, 2.78)

0.29

Morning break

45.43 ^¥* (43.24, 47.62)

62.32 (58.13, 66.51)

< 0.01

33.78 ^¥* (30.28, 42.90)

23.65 (17.40, 29.91)

< 0.01

3.12 ^¥* (2.91, 3.33)

2.74 (2.36, 3.11)

0.04

Late-morning

74.04 ^¥ (72.50, 75.58)

63.57 (60.49, 66.65)

< 0.01

26.14 (24.81, 27.46)

25.92 (23.69, 28.15)

0.82

2.94* (2.75, 3.12)

3.22 (2.94, 3.51)

0.13

Lunch

48.75 ^¥* (46.41, 51.08)

61.80 (58.34, 65.26)

< 0.01

24.65* (22.54, 26.77)

25.28 (22.00, 28.55)

0.95

3.20 (3.01, 3.39)

3.25 (2.96, 3.55)

0.74

Early afternoon

73.18 ^¥* (71.34, 74.83)

64.38 (61.20, 67.56)

< 0.01

26.73* (25.39, 28.08)

25.93 (22.50, 28.96)

0.54

3.16* (2.96, 3.36)

3.32 (3.06, 3.58)

0.64

Late afternoon

62.89 ^¥ (61.25, 64.53)

66.15 (63.54, 68.75)

< 0.01

23.85 ^¥ (22.79, 24.91)

25.71 (23.96, 27.47)

0.049

3.33 (3.17, 3.48)

3.27 (3.02, 3.52)

0.29

Evening

72.58 (70.81, 74.35)

73.92 (71.71, 76.14)

0.41

28.93 (27.79, 30.06)

28.04 (26.33, 29.74)

0.21

2.91 (2.77, 3.06)

3.19 (2.98, 3.40)

0.09

Class time

74.61* (73.34, 75.90)

N/A

N/A

25.01 (24.05, 25.97)

N/A

N/A

2.87* (2.71, 3.04)

N/A

N/A

School time

69.5* (68.25, 70.79)

N/A

N/A

25.34* (24.46, 26.22)

N/A

N/A

2.94* (2.79, 3.09)

N/A

N/A

Out-of-school time

64.94 (63.59, 66.30)

N/A

N/A

21.96 (21.27, 22.66)

N/A

N/A

2.49* (2.39, 2.59)

N/A

N/A