Relative and Absolute Interrater Reliabilities of a Hand-Held Myotonometer to Quantify Mechanical Muscle Properties in Patients with Acute Stroke in an Inpatient Ward

Table 2

The mean between rater differences and ICC indexes. Mean d: mean difference between first and second measurements; CI: confidence interval.

Interrater reliability
	Parameters	Rater 1	Rater 2	Mean d	ICC (95% CI)
Biceps brachii; (affected)	Frequency (Hz)	13.31 (1.13)	13.11 (1.43)	0.20	0.83 (0.63–0.92)
	Decrement	1.27 (0.2)	1.24 (1.24)	0.04	0.89 (0.77–0.95)
	Stiffness (N/m)	220.55 (18.66)	215.52 (27.03)	5.03	0.76 (0.48–0.89)
	Creep	1.45 (0.16)	1.48 (0.18)	−0.03	0.81 (0.60–0.91)
Brachioradialis; (affected)	Frequency (Hz)	13.91 (1.70)	16.94 (1.79)	−3.03	0.93 (0.86–0.97)
	Decrement	1.20 (0.19)	1.44 (0.31)	−0.24	0.91 (0.80–0.96)
	Stiffness (N/m)	231.66 (54.26)	330.86 (57.05)	−99.21	0.92 (0.83–0.96)
	Creep	1.39 (0.21)	1.02 (0.16)	0.37	0.90 (0.80–0.96)
Rectus femoris; (affected)	Frequency (Hz)	14.73 (1.67)	15.08 (2.46)	−0.35	0.86 (0.71–0.93)
	Decrement	1.61 (0.45)	1.67 (0.29)	−0.06	0.65 (0.26–0.84)
	Stiffness (N/m)	287.86 (41.43)	301.24 (67.07)	−13.38	0.88 (0.74–0.95)
	Creep	1.29 (0.18)	1.26 (0.25)	0.03	0.87 (0.73–0.94)
Tibialis anterior; (affected)	Frequency (Hz)	18.81 (2.16)	18.37 (2.43)	0.44	0.91 (0.82–0.96)
	Decrement	1.26 (0.42)	1.11 (0.35)	0.15	0.83 (0.64–0.92)
	Stiffness (N/m)	376.00 (53.23)	354.83 (58.06)	21.17	0.91 (0.82–0.96)
	Creep	0.98 (0.18)	1.05 (0.19)	−0.07	0.89 (0.77–0.95)
Biceps brachii; (nonaffected)	Frequency (Hz)	13.50 (0.98)	13.67 (0.94)	−0.17	0.70 (0.36–0.86)
	Decrement	1.21 (0.2)	1.19 (0.14)	0.02	0.74 (0.46–0.88)
	Stiffness (N/m)	218.83 (18.99)	223.72 (18.90)	−4.9	0.66 (0.29–0.84)
	Creep	1.44 (0.14)	1.44 (0.14)	0.00	0.70 (0.35–0.86)
Brachioradialis; (nonaffected)	Frequency (Hz)	17.16 (1.99)	17.41 (1.32)	−0.25	0.78 (0.54–0.90)
	Decrement	1.36 (0.23)	1.30 (0.21)	0.06	0.65 (0.25–0.84)
	Stiffness (N/m)	323.00 (57.98)	323.76 (47.64)	−0.76	0.88 (0.74–0.97)
	Creep	1.04 (0.15)	1.02 (0.11)	0.02	0.71 (0.39–0.87)
Rectus femoris; (nonaffected)	Frequency (Hz)	14.84 (1.64)	14.93 (1.88)	−0.09	0.97 (0.94–0.99)
	Decrement	1.59 (0.46)	1.69 (0.34)	−0.1	0.96 0.92–0.98)
	Stiffness (N/m)	288.83 (41.15)	292.03 (48.60)	−3.21	0.99 (0.97–0.99)
	Creep	1.28 (0.17)	1.28 (0.21)	0	0.96 (0.92–0.98)
Tibialis anterior; (nonaffected)	Frequency (Hz)	18.96 (2.43)	19.23 (2.61)	−0.27	0.87 (0.72–0.94)
	Decrement	1.21 (0.34)	1.15 (0.28)	0.06	0.65 (0.27–0.83)
	Stiffness (N/m)	368.4 (51.97)	372.41 (50.03)	−3.97	0.83 (0.63–0.92)
	Creep	1.00 (0.16)	0.98 (0.17)	0.02	0.91 (0.81–0.96)