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Table 2 Average physical activity, air pollution concentrations and other environmental variables in the last seven days before survey

From: The association between ambient fine particulate air pollution and physical activity: a cohort study of university students living in Beijing

Survey order 1nd 2rd 3rd 4th
Dependent variable
 Vigorous PA (weekly minutes), mean (SD) 95.81 (112.16)** 104.76 (90.62)** 77.18 (97.50)*** 126.90 (104.29)***
 Moderate PA (weekly minutes), mean (SD) 213.46 (175.24)** 195.64 (147.34)*** 157.94 (131.37)*** 177.35 (128.34)***
 MVPA (weekly minutes), mean (SD) 289.75 (226.77) 286.96 (194.32) 229.83 (183.69)*** 300.55 (188.60)
 Walk PA (weekly minutes), mean (SD) 71.91 (115.73) 69.64 (112.51) 73.30 (102.43)* 81.05 (108.85)**
 Sedentary behavior (hour/day), mean (SD) 8.96 (2.78)*** 9.43 (2.91)** 9.21 (2.85)* 9.21 (2.92)*
 Sleeping behavior (hour/day), mean (SD) 7.68 (0.85) 7.66 (0.91) 7.87 (0.86)*** 7.79 (0.99)***
 Total Met, mean (SD) 1835.67 (1381.20) 1848.72 (1221.28) 1501.97 (1151.37)*** 1994.27 (1228.22)***
Independent variables
 PM2.5 (μg/m3), mean (SD) 72.90 (50.26) 68.78 (58.48) 165.13 (131.98)*** 92.88 (70.43)*
Covariates variables
 Temperature (°C), mean (SD) 25.36 (2.87) 11.64 (4.20)*** 12.17 (5.13)*** 28.73 (3.00)
 Wind (m/s), mean (SD) 3.23 (0.75) 3.55 (0.65) 3.38 (1.00) 3.41 (0.44)
 Rain %, mean (SD) 0.36 (0.51) 0.18 (0.41) 0.08 (0.29) 0.18 (0.41)
  1. Results of repeated measures one-way ANOVA analysis. * P < 0.05; ** P < 0.01; *** P < 0.001