3.3. Physical activity level
−3.57
Mean scores for moderate PA and walking levels (including frequency, duration and intensity) and METs/week and steps count increased significantly from the baseline to 6-months among the intervention group, although not in the control group. The difference in mean change of walking, moderate PA levels and steps count between the two groups was high (Change in the physical activity levels by group.The analysis was based on SD, standard deviation; PA, physical activity; METs, metabolic equivalents.significant difference when The mean of moderate PA frequency increased in the intervention group from 0.79 days/week at baseline to 1.0 days/week at 6 months, and in the control group it decreased from 0.80 days/week at baseline to 0.78 days/week at 6 months. The mean change in moderate PA frequency was 0.21 days/week in the intervention group and − 0.02 days/week in the control group. The difference in the mean change between the two groups was 0.23 days/week (95% CI −0.70 to −0.10). The mean of moderate PA duration increased in the intervention group from 0.58 min/week at baseline to 80 min/week at 6 months, and it decreased in the control group from 60.2 min/week at baseline to 52.3 min/week at 6 months. The mean change in moderate PA duration was 30 min /week in the intervention group and − 8.1 min/week in the control group. The difference in the mean change between the two groups was 38.1 min/week (95% CI −39.98 to −1.58).The mean of walking frequency increased in the intervention group from 3.38 days/week at baseline to 5.52 days/week at 6 months, and in the control group it increased from 3.44 days/week at baseline to 3.46 days/week at 6 months. The mean change in moderate PA frequency was 2.14 days/week in the intervention group and 0.02 days/week in the control group. The difference in the mean change between the two groups was 2.14 days/week (95% CI −3.57 to −2.00). The mean of moderate PA duration increased in the intervention group from 108.3 min/week at baseline to 185.2 min/week at 6 months, and it increased in the control group from 110.1 min/week at baseline to 111.3 min/week at 6 months. The mean change in moderate PA duration was 76.9 min /week in the intervention group and 1.2 min/week in the control group. The difference in the mean change between the two groups was 75.7 min/week (95% CI −179.96to −73.76).The mean of total PA intensity among the intervention group was 462 METs/week at baseline and this increased greatly to 965 METs/week at the 6-month follow-up point, while in the control group it was 460 METs/week at baseline and 466 at 6-month follow-up. The mean change in total METs was 503 METs/week in the intervention group and 6 METs/week in the control group. This represents a very high difference between the mean changes of the two study groups at −497 METs /week (95% CI 366.01 to 447.80).The mean of steps/day among the intervention group increased significantly from 6,996 steps/day at baseline to 9,996 steps/day at 6-month follow-up point, while in the control group it was 6,992 steps/day at baseline and 7,868 steps/week at 6-month follow-up. The mean change in steps/day was 3,000steps/day in the intervention group and 876 steps/day in the control group. The difference between mean change of the two groups was very significant at 2,124 (−820 to −563).