Table 2 Intervention Effects as Measured in 2002, Relative to Baseline (2000) for Selected Key Physical Activity Endpoints for the IMPACT Cohort (N = 11 schools)

WBPA (Daily Weight Bearing Minutes)

C

85.66 (58.13)

87.05 (3.74)

5.12 ↑

4.82 – 5.42

0.33

I

87.11 (51.92)

92.17 (3.64)

WBPA (Number of Daily Weight Bearing Activities)

C

3.12 (1.95)

3.18 (0.14)

0.25 ↑

0.23 – 0.27

0.23

I

3.19 (1.39)

3.43 (0.14)

Total Daily Minutes of Activity

C

102.63 (65.32)

104.30 (4.24)

6.15 ↑

5.81 – 6.49

0.30

I

103.55 (61.82)

110.45 (4.13)

MVPA (Daily Moderate to Vigorous Physical Activity Minutes)

C

64.63 (53.93)

63.63 (3.63)

7.05 ↑

6.75 – 7.35

0.16

I

64.85 (47.23)

70.68 (3.53)

Total Daily Minutes of Vigorous Activity

C

14.96 (28.39)

14.35 (2.24)

6.00↑

5.82 – 6.18

0.05*

I

14.00 (29.33)

20.35 (2.18)

Daily Total Weight Bearing Adjusted MET Value (mins)

C

400.01 (284.17)

415.53 (20.29)

43.27↑

41.62 – 44.92

0.13

I

411.68 (303.51)

458.80 (19.71)

Daily Total Moderate to Vig. Activity Adjusted MET Value (mins)

C

380.53 (330.81)

383.07 (22.90)

40.74 ↑

38.88 – 42.60

0.20

I

382.25 (307.92)

423.81 (22.24)