Table 4 Percentage change in maternal PFAS concentration at baseline for a one unit increase in physical activity measure and percentage change in the relative change in PFAS concentration for a one unit increase in physical activity measure. Associations were estimated in a linear mixed model with adjustment for pre-pregnancy BMI, maternal age, and parity

Visit 1

 MVPA

−0.01 [−3.46;3.56]

0.21 [−3.64;4.21]

−0.17 [−10.16;10.93]

−0.10 [−5.11;5.17]

0.08 [−6.18;6.75]

−0.80 [−7.10;5.93]

 Steps

−0.22 [−3.68;3.36]

2.76 [−1.22;6.90]

1.14 [−9.18;12.64]

−0.03 [−5.05;5.25]

0.47[−5.82;7.17]

−1.59 [−7.87;5.12]

 Active kcal

−1.70 [−5.10;1.82]

3.40 [−0.61;7.57]

−0.87 [−10.74;10.10]

0.24 [−4.79;5.53]

0.08 [−6.18;6.76]

−2.04 [−8.26;4.60]

 Sedentary time

−1.13 [−4.53;2.38]

−3.88 [−7.54;−0.07]*

−0.51 [−9.66;11.81]

−0.82 [−5.79;4.42]

−1.88 [−8.00;4.66]

1.22 [−5.21;8.08]

Change Visit 1 to Visit 4

 MVPA

0.02 [−0.34;0.38]

−0.05 [−0.53;0.43]

1.23 [0.16;2.30]*

−0.30 [−0.79;0.19]

0.06 [−0.46;0.59]

−0.15 [−1.07;0.78]

 Steps

0.18 [−1.59;1.98]

1.40 [−1.02;3.87]

−0.16 [−5.35;5.30]

−0.40 [−2.85;2.11]

0.26 [−2.34;2.93]

0.20 [−4.20;4.79]

 Active kcal

0.44 [−0.85;1.75]

−0.04 [−1.83;1.78]

5.30 [1.26;9.50]*

−1.23 [−3.01;0.59]

0.27 [−1.64;2.22]

2.52 [−0.88;6.04]

 Sedentary time

−2.53 [−5.90;0.97]

−4.59 [−9.02;0.05]

−11.08 [−19.86;1.35]*

−0.63 [−5.46;4.45]

−2.61 [−7.65;2.71]

−8.99 [−16.66;−0.62]*