Table 5.

Intra-rater and inter-rater reliability of paraspinal muscle parameters using intraclass correlation coefficient

L4 + 5	Intra-rater	Inter-rater
MF rTCSA	0.948	0.915
ES rTCSA	0.917	0.896
MF FI	0.897	0.823
ES FI	0.933	0.815
PS rFCSA	0.867	0.845

Abbreviations: ES Erector spinae, FI Fat infiltration, MF Multifidus, PS Psoas major, rFCSA Relative functional cross-sectional area, rTCSA Relative total cross-sectional area