[Forecasting decrease in performance and health disorders under exposure to work intensity factors in accordance with work conditions class].

Results of complex physiologic and ergonomic, clinical and functional studies helped to justify approaches to quantitative evaluation and assessment of posssible decrease in performance and health disorders in workers in accordance with work conditions class of mental work. Linear regression dependence was established between work intensity class and performance decrease. The linear regression equation obtained enables to calculate a percentage of performance decrease in various work intensity classes. Intensive direct correlation was revealed between work intensity value and a percentage of individuals with diagnosed occupationally induced diseases.

[The physiological features of overstrain formation in mental work and its prevention].

Psychophysiological and biochemical studies have shown that significant neuro- emotional loads produce such functional status, which can be called overstrain. It was found out at the first time that the physiological and biochemical characteristics of overstrain based on the main parameters in mental work. The research proved the preventive measures of human body overstrain and can help to prevent the diseases related to work.

[Labor physiology role in workers of different type labor activity workability and health. Progress and prospects].

There are presented the data of workers overstrain and fatigue conditions mechanisms based on physiological, psychological and ergonomic aspects of work processes in different types of activities (mental, visual-strained, physical). 15-year historical analysis, current state and prospects of labor physiology methods development are shown. Complex physiological and ergonomic investigations have allowed developing the measures of work ability raise and diseases prevention for workers various professions. Obtained results provided the basis of development of regulatory documents in area of human organism strain physiological norms, consequences of psycho-emotional stress and overstrain prevention taking into account working conditions class.

[Methods of psychologic diagnosis of occupational stress under variable work intensity].

Psychologic state of office workers in three modern companies was studied, so a list of informative parameters was determined, that outline degree of psychic resources decrease under growing mental work intensity.

[Physiologic and ergonomic aspects of social and hygienic monitoring of workers' performance and health].

The article tackles necessity of physiologic and ergonomic research in system of social and hygienic monitoring of workers' performance and health. A presented scheme covers physiologic and ergonimic aspects: monitoring of work process factors; monitoring of workers' performance and functional state. The authors formulated theoretic orientation of the problem and demonstrated scientific and practical importance of physiologic and ergonomic monitoring.

[Features of overexertion formation due to high psychoemotional strain and shift work].

Physiologic studies proved that considerable psychoemotional load in shift work and longer working shifts lead to the certain functional state called overexertion. The authors are first to set biochemical and physiologic characteristics by main parameters for this state in mental workers. According to the authors, physiologic features of overexertion should be evaluated from the viewpoint of coordinated diurnal rhythms, internal and intersystem communications in central nervous and cardiovascular systems, functional levels.

[Methodic approaches to determining the level of occupational fitness in jobs prone to trauma].

The article deals with main methods to evaluate functional state of various body systems and with the methods-based criteria of occupational fitness for miscellaneous activities. Examination of 11 types of jobs prone to trauma helped to specify integral parameter for occupational selection.

[Psychophysiological aspects of occupational stress in occupational medicine]. / Psikhofiziologicheskie aspekty proizvodstvennogo stressa v meditsine truda.

The authors necessitate complex psychophysiologic, hygienic and clinical research to form a concept of stress induced by occupational factors. The materials disclosure role of fundamental studies, critically review various models (two- and three-dimensional) of stress at work. Analysis of the authors' data and facts obtained by other researchers in detection and evaluation of various stress factors. Essential is to specify prophylactic measures against stress at work for workers' health preservation.

[The probability of impaired health in workers exposed to occupational hazards]. / Veroiatnost' narusheniia zdorov'ia rabotaiushchikh on vozdeistviia neblagopriiatnykh faktorov trudovogo protsessa.

Complex descriptive, physiologic and hygienic studies covered various occupational groups of physical and mental work and revealed that health disorders probability depends on intensity of occupational factors. Increase in the intensity results in higher physiologic expenditure and greater incidence of occupational diseases. Symptoms of disorders appeared to depend on specificity of occupational factors.

[Intellectual occupations and chronic stress in shift work]. / Khronicheskii stress pri smennoi umstvennoi rabote.

Genesis of chronic occupational stress covers steps of sequent transformation from functional state to strain, fatigue and overfatigue. Physiologic features of these conditions were analyzed, so the conditions could be assessed through functional levels, relationships between central nervous and cardiovascular systems and inner links of these systems, coordination of diurnal rhythms. Workers having higher occupational psychoemotional strain, shift work schedule and 12-hours working day are significantly prone to neurotic disorders.

[The influence of occupational factors on clinical and physiological states of those working at video-display terminals]. / Vliianie faktorov professional'noo sredy na kliniko-fiziologicheskii status lits, rabotaiushchikh s videodispleinymi terminalami.

The studies proved users of videodisplays to be under exposure to occupational hazards cumulative even in total 4-hour daily work at the videodisplay. That induces energetic and informational stress that clinically resembles fatigue neurosis. The examinees demonstrated premorbid condition, lower physiologic resources, homeostatic potential and occupational health quality.

[Changes in the functional state of the visual analyzer during work at video display terminals of graphic images]. / Izmenenie v funktsional'nom sostoianii zritel'nogo analizatora pri rabote s videoterminalami graficheskogo izobrazheniia.

The examination covered female operators of sewing pickup, engaged into the work at video-displays. The total work load appeared to equal 77.6% and the work at video-display--75.2% of the shift time. Functional state of the vision demonstrated a decrease even after 2 hrs of the work, then stabilized by midpoint of the shift and afterwards lowered by 10-12 hrs of the work. Those objective changes correlated with the sensation of orbital discomfort. The findings served as a base for prophylaxis to restore the performance during the regulated breaks.

[Effect of working shift timing and different workload on development of fatigue in workers]. / Osobennosti formirovaniia utomleniia u rabotnikov s razlichnoi stepeníu napriazhennosti truda v zavisimosti ot prodolzhitelnosti rabochei smeny.

The authors studied functional changes of central nervous and cardiovascular systems among operators having variable work strain (airlines dispatchers, operators of robot complexes, TV operators) and changeable duration of working shift (8 and 12 hours). Analysis of the materials considered work strain in the occupational groups (I, II and III degrees of strain) and duration of the working shift. The results proved that the fatigue degree depends on the work strain degree and duration of the working shift, so prophylaxis and normal work duration could be set.