Table 4 Mediation effect of percentage body fat, body mass index and waist circumference on the association between total daily steps/aerobic time and clinical measures
Mediator | Independent variable | Outcome Variable | c path(SE) | a path(SE) | b path(SE) | c’path(SE) | ab path(95%CI) | % mediation |
|---|---|---|---|---|---|---|---|---|
Percentage body fat | Total steps (steps/day) | |||||||
SBP (mmHg)(n = 233) | -2.70 (0.94) | -3.61 (0.67) | 0.33 (0.94) | -1.50(0.98) | -1.19 (-2.46;-0.53) | 44 | ||
DBP(mmHg)(n = 233) | -2.75 (0.78) | -3.61 (0.67) | 0.28 (0.08) | -1.76 (0.81) | -0.99 (-1.63;-0.49) | 36 | ||
BC (mmol/L)(n = 195) | -0.18 (0.08) | -3.44 (0.74) | 0.02 (0.01) | -0.11(0.08) | -0.07 (-0.16;-0.0006) | 38 | ||
BG (mmol/L)(n = 189) | -0.31 (0.14) | -3.37 (0.74) | 0.04 (0.01) | -0.19(0.15) | -0.13 (-0.35;-0.24) | 42 | ||
Aerobic time (minutes/day) | ||||||||
SBP (mmHg)(n = 233) | -3.71 (1.37) | -4.39 (0.98) | 0.34 (0.09) | -2.22(1.39) | -1.48 (-2.72;-0.70) | 60 | ||
DBP (mmHg)(n = 233) | -4.34 (1.12v) | -4.39 (0.98) | 0.27 (0.07) | -3.14 (1.14) | -1.19 (-1.98;-0.67) | 27 | ||
BC (mmol/L)(n = 195) | -0.18(0.13) | -4.00 (1.17) | 0.02 (0.01) | -0.09(0.13) | -0.08 (-0.19;-0.01) | 44 | ||
BG (mmol/L)(n = 189) | -0.30(0.23) | -4.13 (1.20) | 0.04 (0.01) | -0.13(0.23) | 0.17 (-0.46;-0.04) | 57 | ||
Body mass index | Total steps (steps/day) | |||||||
SBP (mmHg)(n = 290) | -2.38 (0.84) | -1.04 (0.34) | 0.60 (0.14) | -1.75(0.82) | -0.63 (-1.31;-0.20) | 26 | ||
DBP(mmHg)(n = 290) | -2.61 (0.69) | -1.04(0.34) | 0.51 (0.11) | -2.08 (0.68) | -0.53 (-0.95;-0.20) | 20 | ||
BC (mmol/L)(n = 247) | -0.16 (0.07) | -0.71(0.38) | 0.01(0.01) | -0.15 (0.07) | -0.009(-0.05;0.005) | 06 | ||
BG (mmol/L)(n = 240) | -0.27 (0.12) | -0.77 (0.38) | 0.07 (0.02) | -0.27 (0.12) | -0.05 (-0.17;-0.007) | 19 | ||
Aerobic time (minutes/day) | ||||||||
SBP (mmHg)(n = 290) | -2.81 (1.17) | -0.67(0.50) | 0.63 (0.14) | -2.38 (1.17) | -0.43(-1.18;0.10) | 15 | ||
DBP (mmHg)(n = 290) | -3.40 (0.10) | -0.67(0.50) | 0.54 (0.11) | -3.03 (0.96) | -0.36(-0.87;0.09) | 11 | ||
BC (mmol/L)(n = 247) | -0.12(0.11) | -0.38(0.57) | 0.02(0.01) | -0.12(0.11) | -0.01(-0.05;0.01) | 08 | ||
BG (mmol/L)(n = 240) | -0.25(-0.18) | -0.37(0.60) | 0.07 (0.02) | -0.22(0.18) | -0.03(-0.14;0.04) | 12 | ||
Mediator | Independent variable | Outcome Variable | c path (SE) | a path (SE) | b path (SE) | c’ path (SE) | ab path (95% CI) | % mediation |
Waist circumference | Total steps (steps/day) | |||||||
SBP (mmHg)(n = 292) | -2.60 (0.83) | -3.91 (0.76) | 0.34 (0.06) | -1.26(0.82) | -1.34 (-2.21;-0.76) | 52 | ||
DBP(mmHg)(n = 292) | -2.90 (0.67) | -3.91 (0.76) | 0.27 (0.05) | -1.83 (0.67) | -1.05 (-1.65;-0.60) | 36 | ||
BC (mmol/L)(n = 243) | -0.15 (0.07) | -3.43 (0.83) | 0.01(0.01) | -0.12(0.07) | -0.03(-0.09;0.001) | 20 | ||
BG (mmol/L)(n = 236) | -0.30 (0.12) | -3.34 (0.84) | 0.03 (0.01) | -0.20(0.12) | -0.10 (-0.19;-0.05) | 33 | ||
Aerobic time (minutes/day) | ||||||||
SBP (mmHg)(n = 292) | -3.30 (1.21) | -3.24 (1.14) | 0.35 (0.06) | -2.15(1.16) | -1.14 (-2.07;-0.46) | 35 | ||
DBP (mmHg)(n = 292) | -3.91 (0.99) | -3.24 (1.14) | 0.28 (0.05) | -2.99 (0.95) | -0.91 (-1.62;-0.36) | 23 | ||
BC (mmol/L)(n = 243) | -0.12(0.11) | -3.01 (1.31) | 0.01 (0.01) | -0.01(0.11) | -0.03 (-0.10;-0.0002) | 25 | ||
BG (mmol/L)(n = 236) | -0.25(0.19) | -3.31 (1.33) | 0.03 (0.01) | -0.14(0.19) | -0.11 (-0.24;-0.03) | 44 |