Universal goniometer and electro-goniometer intra-examiner reliability in measuring the knee range of motion during active knee extension test in patients with chronic low back pain with short hamstring muscle

Table 2 Mean ± SD, reliability coefficient and SEM of knee extentison degree mesured by electro goniometer and universal goniametr (n = 45)

Scale	First assessment Mean ± SD	Second assessment Mean ± SD	Third assessment Mean ± SD	ICC (95% CI)	SEM°
Electro-goniometer	143.81 ± 22.69	146.67 ± 19.45	147.29 ± 18.94	0.99 (0.98–0.99)	2.16°
Universal goniometer	154.14 ± 7.01	155.76 ± 7.69	157.48 ± 6.83	0.96 (0.94–0.96)	1.04°

ICC (95% Confidence Interval) was reported/ ICC: Intra-class correlation coefficient/ SEM: Standard error of measurements

ISSN: 2052-1847