Table 1.

Mean-values and standard deviations of grasping force during the observation period are compared for every single measurement. P value indicated statistically significant differences in favor of the experimental group in the 9th week to the end of the observation period.

Time point	Magnetic field		Control		P value
	Mean-value	Standard deviation	Mean-value	Standard deviation
1	87.44	34.76	64.33	23.16	0.0683
2	118.33	59.86	72.28	17.72	0.0180
3	111.69	27.62	134.47	39.33	0.1149
4	128.36	39.94	189.14	42.41	0.0015
5	156.22	38.11	154.58	40.52	0.9196
6	140.81	33.07	168.39	38.33	0.0724
7	168.53	36.5	177.14	39.44	0.5844
8	166.89	33.96	141.81	25.71	0.0536
9	202.33	62.13	143.11	20.78	0.0049
10	233.31	81.34	141.03	35.24	0.0016
11	258.89	88.93	187.78	28.86	0.0151
12	238.06	72.17	175.17	40.58	0.0153