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Biomedical subjects

A Bortkiewicz

Publications and source records attributed to A Bortkiewicz.

21 records · Page 2Linked to original sources
PubMed1989

Relationship between perceived psychic workload and heart rate reactivity in industrial women managers.

The paper presents the results of an investigation into the physiological cost of psychic load in the profession of industrial managers. The psychic workload was estimated on the basis of an evaluation of work requirements and the ability to meet them in terms of mental difficulty, monotony, risk, responsibility, interpersonal conflicts and time pressure. The physiological cost was estimated on the basis of heart rate at work, during leisure time and sleep. Heart rate at work indicated that occupational tasks carried significant psychic load. Notably, the analysis of requirements involving risk showed them to be the most important factor affecting heart rate. Physiological effects of psychic load at work persisted round the clock, which is reflected by a correlation between heart rate during leisure time and sleep and some measures of load and/or working time.

Electrocardiography↗
PubMedDate not supplied

Ambulatory ECG monitoring in workers exposed to electromagnetic fields.

The aim of this study was to evaluate the function of the circulatory system in workers occupationally exposed to medium frequency electromagnetic fields. The subjects were 71 workers at four AM broadcast stations [0.738-1.503 MHz] aged 20-68 (mean 46.9 +/- 13.1) years and 22 workers at radio link stations aged 23-67 (mean 48.2 +/- 17.4) years. Workers at AM broadcast stations experienced 2-40 (mean 18.6 +/- 12.1) years' exposure to electromagnetic fields (average daily exposure dose about 115 Vh m-1, maximum exposure levels during shift about 165 V m-1), workers at radio link stations had no history of regular exposure to electromagnetic fields. In all the subjects a general medical examination, resting ECG and 24 h Holter monitoring were performed. The work organization, work period structure, age, lifestyle, nutritional habits and health status in both groups remained fairly similar. The electrocardiographic abnormalities detected in the resting and/ or 24 h ECG were significantly more frequent (p = 0.006) in workers exposed to electromagnetic fields than in non-exposed subjects (75% versus 25%). A clear tendency for a higher number of rhythm disturbances (mostly ExV) was observed in AM broadcast station workers.

Adult↗