The study was conducted on aircraft-building enterprise during production microcycle (before working shift start, during last working hour and in an hour after the shift end)--spectral analysis covered variability of heart rhythm in 70 male assembler riveters aged 25-59, divided into 2 groups in accordance with industrial equipment used. The group 1 used standard vibroinstrument, the group 2--pneumoinstruments with low vibration velocity parameters. Triple study during the working shift revealed in group 2 an adequate reaction of vegetative nervous system to vibration, in group 1 a negative trend was seen with centralization of regulatory processes and absence of adequate recovery in an hour after work.