Characteristic

Prelabour CS (SD)

Labour CS (SD)

Significance

Target strain

0.28 (0.15)

0.24 (0.14)

t = 2.12, p = 0.04

Reference strain

0.40 (0.20)

0.39 (0.28)

t = 0.23, p = 0.82

Strain ratio

1.45 (0.34)

1.55 (0.33)

t = −2.42, p = 0.02