TABLE 1.

Characteristics of the study participants.

Group	Parameters of vibrations	Age [years] mean ± SD	Body mass [kg] mean ± SD	Height [cm] mean ± SD
I	4 mm/60 Hz	23.4 ± 1.1	78.5 ± 8.3	181.9 ± 4.4
II	4 mm/40 Hz	22.2 ± 1.2	75.5 ± 6.8	178 ± 1.7
III	4 mm/20 Hz	21.6 ± 1.3	77.6 ± 9.2	179.3 ± 6.7
IV	2 mm/60 Hz	21.4 ± 0.8	76.3 ± 11.9	177.3 ± 8.8
V	2 mm/40 Hz	22 ± 1.3	87.3 ± 12.2	184.3 ± 5.6
VI	2 mm/20 Hz	21.7 ± 1.2	75.3 ± 8	180.7 ± 5.6
VII	control group	21.7 ± 0.8	75.4 ± 7.6	178.1 ± 4.7