Isometric hand grip strength measured by the Nintendo Wii Balance Board – a reliable new method

Table 2 Results from the reproducibility analysis for the non-dominant hand

Non-dominant hand	Session 1		Session 2
Measurement(s)	MEAN	SD	MEAN	SD	M-Diff (paired T-test)	ICC [95 % CI]	SEM (SEM%)	LOA (LOA%)
First measurement	21.47	1.28	20.78	1.27	−0.69 (n.s.)	0.948 [.891-.975]	0.5 (2.4)	4.2 (20.1)
Mean of the two first measurements	21.08	1.22	20.68	1.25	−0.40 (n.s.)	0.973 [.943-.988]	0.2 (1.2)	2.9 (14.3)
Mean of all three measurements	21.30	1.20	20.65	1.23	−0.65 (n.s.)	0.976 [.947-.989]	0.2 (1.1)	2.7 (13.3)
Highest value of all three measurements	22.30	1.24	21.61	1.32	−0.69 (n.s.)	0.961 [.917-.982]	0.4 (1.7)	3.7 (16.8)

Mean, standard deviation (SD), standard error of measurement (SEM) and limits of agreement (LOA) in kilograms. M-diff is the mean difference in kilograms between the mean of the two sessions and the comparison using the paired T-test. n.s. not significant (all p-values are less than 0.001). SEM and LOA are also given in percentages (SEM% and LOA%). Intraclass correlation coefficient (ICC) with 95 % confidence intervals [95 % CI] are given. Results are given for one measurement, mean of two measurements, mean of three measurements and highest value of three measurements

ISSN: 1471-2474