Table 3 Longitudinal mediation effect of PA (T1) between AST volume (T0) and adiposity and fitness (T2)
Independent Variable | Potential mediator | Outcomes | a-path β (95%CI) | b-path β (95%CI) | Total Effect c-path β (95%CI) | Direct Effect c’-path β (95%CI) | Indirect Effect a*b β (95%CI) |
|---|---|---|---|---|---|---|---|
AST volume | LPA | BMI | 0.20 (− 0.04;0.43) | −0.02 (− 0.04;0.00) | 0.03 (− 0.05;0.11) | 0.04 (− 0.04;0.12) | −0.00 (− 0.01;0.00) |
Skinfolds | 0.20 (−0.05;0.45) | 0.00 (−0.12;0.13) | − 0.06 (− 0.48;0.36) | −0.07 (− 0.48;0.35) | 0.00 (− 0.02;0.03) | ||
Waist circumference | 0.20 (−0.05;0.44) | − 0.04 (− 0.12;0.04) | 0.04 (− 0.28;0.37) | 0.05 (− 0.28;0.38) | −0.01 (− 0.03;0.01) | ||
Standing long jump | 0.20 (−0.05;0.44) | −0.02 (− 0.44;0.40) | −0.37 (− 1.75;1.01) | −0.37 (− 1.73;1.00) | −0.00 (− 0.08;0.08) | ||
Handgrip strength | 0.20 (−0.06;0.45) | −0.01 (− 0.07;0.05) | −0.12 (− 0.36;0.13) | −0.11 (− 0.36;0.13) | −0.00 (− 0.01;0.01) | ||
20-m shuttle run test | 0.20 (−0.04;0.44) | 0.01 (−0.09;0.12) | 0.09 (− 0.26;0.44) | 0.09 (− 0.26;0.44) | 0.00 (− 0.02;0.02) | ||
MVPA | BMI | 0.33 (0.17;0.50) | −0.04 (− 0.08;0.01) | 0.04 (− 0.03;0.12) | 0.06 (− 0.03;0.14) | −0.01 (− 0.03;0.00) | |
Skinfolds | 0.33 (0.16;0.49) | −0.05 (− 0.22;0.12) | −0.05 (− 0.47;0.37) | −0.04 (− 0.46;0.39) | −0.02 (− 0.07;0.04) | ||
Waist circumference | 0.33 (0.18;0.49) | −0.04 (− 0.21;0.13) | 0.07 (− 0.26;0.41) | 0.09 (− 0.25;0.42) | −0.01 (− 0.07;0.04) | ||
Standing long jump | 0.33 (0.18;0.49) | 0.22 (−0.34;0.77) | −0.47 (− 1.85;0.91) | −0.54 (− 2.03;0.95) | 0.07 (− 0.11;0.26) | ||
Handgrip strength | 0.33 (0.17;0.49) | −0.06 (− 0.18;0.06) | −0.11 (− 0.35;0.14) | −0.09 (− 0.33;0.16) | −0.02 (− 0.06;0.03) | ||
20-m shuttle run test | 0.33 (0.18;0.50) | 0.21 (0.01;0.40) | −0.01 (− 0.34;0.37) | −0.06 (− 0.42;0.31) | 0.07 (− 0.01;0.15) |