Table 2 Spearman correlations between enzyme serum levels

MMP8 day 0

MMP9 day 0

MMP12 day 0

MMP8 day 0

1

0.895**

0.871**

MMP9 day 0

0.895**

1

0.982**

MMP12 day 0

0.871**

0.982**

1

MMP8 day 1

MMP9 day 1

MMP12 day 1

MMP8 day 1

1

0.661**

0.649**

MMP9 day 1

0.661**

1

0.954**

MMP12 day 1

0.649**

0.954**

1

MMP8 day 3

MMP9 day 3

MMP12 day 3

MMP8 day 3

1

0.878**

0.867**

MMP9 day 3

0.878**

1

0.951**

MMP12 day 3

0.867**

0.951**

1

MMP8 day 5

MMP9 day 5

MMP12 day 5

MMP8 day 5

1

0.854**

0.874**

MMP9 day 5

0.854**

1

0.937**

MMP12 day 5

0.874**

0.937**

1

MMP8 day 7

MMP9 day 7

MMP12 day 7

MMP8 day 7

1

0.639**

0.562**

MMP9 day 7

0.639**

1

0.960**

MMP12 day 7

0.562**

0.960**

1

MMP8 day 10

MMP9 day 10

MMP12 day 10

MMP8 day 10

1

0.836**

0.807**

MMP9 day 10

0.836**

1

0.963**

MMP12 day 10

0.807**

0.963**

1