Table 1.

Means and test–retest reproducibility for trunk muscle endurance

Measurement (n = 47)	Endurance time (s) Mean ± SD	ICC test–retest
Trunk flexor endurance
Test	71 ± 55	0.82**
Retest	73 ± 51
Trunk extensor endurance
Test	153 ± 51	0.63**
Retest	162 ± 56

SD standard deviation of the mean, ICC Intraclass Correlation Coefficient

**P < 0.001; *P < 0.05