Українська Русский English

ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2003; 49(5): 89-96

Effect of time of the day and fatigueon psychophysiological functions inhuman-operator

N.A. Bobko

    Institute for Occupational Health under the Academy ofMedical Sciences of Ukraine, Kiev


Time of the day has been found to have an important effect on the intersystemic relations of the psychophysiological functions of an operator, while the activity of the cardiovascular system (CVS) depended not only on the time of the day but also, to a large extent, on fatigue. The morning time potentiated the manifestations of staying awake but the evening time – those of fatigue. Relatively less pronounced changes in the functioning of an organism in the morning, induced by fatigue, gave evidence for both a higher level of activation of the organism and relatively higher level of the central interactions in it. Accumulated fatigue potentiated the manifestations of daily variations of the functional activity of an operator. The second subsequent night shift has been shown to have a higher initial activity of the CVS, as compared to the second day shift, and it was characterised by an increased difference between systolic and diastolic blood pressure as compared to the first night shift. Effect of overshift fatigue shows an increase in the vascular component and a decrease in the cardiac one in the regulation of blood circulation. Mental performance was shown to be less dependent on time of the day and fatigue as compared to the CVS activity. Short-term memory was more sensitive to fatigue and more often correlated with the parameters of the CVS than attention did.


  1. Анохин П. К. Узловые вопросы теории функциональной системы. – М.: Наука, 1980. – 196 с.
  2. Аринчин Н.И., Кулаго Г.В. Гипертоническая болезнь как нарушение саморегуляции кровообращения. – Минск: Наука и техника, 1969. – 104 с.
  3. Aшофф Ю., Вивер Р. Циркадианная система человека. – В кн.: Биологические ритмы. – М.: Мир, 1984. – Т.1. – С.362 – 388.
  4. Деряпа Н. Р., Мошкин М. П., Посный В. С. Проблемы медицинской биоритмологии. – М. : Медицина, 1985. – 208 с.
  5. Колькюхунь П. Ритмы работоспособности. – В кн.: Биологические ритмы. – М.: Мир, 1984. – Т.1. – С.389 – 408.
  6. Майдиков Ю. Л., Макаренко Н. В., Петленко Ю. А. и др. Психофизиологические методы и критерии оценки успешности профессиональной деятельности оперативного персонала ГРЭС: Метод. рекомендации. – К., 1985. – 55 с.
  7. Макаренко Н. В., Пухов Б. А., Кольченко Н. В. и др. Основы профессионального психофизиологического отбора. – К.:Наук. думка, 1987. – 244 с.
  8. Моисеева Н.И., Сысуев В.М. Временная среда и биологические ритмы. – Л.:Наука,1981. –128с.
  9. 9. Навакатикян А.О., Крыжановская В.В., Кальниш В.В. Физиология и гигиена умственного труда. – К.: Здоров’я, 1987. – 157с.
  10. 10. Оранский И.Е. Природные лечебные факторы и биологические ритмы. – М.: Медицина, 1988. –288 с.
  11. Смирнов К.М., Навакатикян А.О., Гамбашидзе Г.М. и др. Биоритмы и труд. – Л.: Наука, 1980. – 140 с.
  12. Соколов Е.И., Белова Е.В. Эмоции и патология сердца. – М.: Наука, 1983. – 302 с.
  13. Ухтомский А. А. Доминанта. – М. – Л.: Наука, 1966. – 273 с.
  14. Чижевский А.Л. Земное эхо солнечных бурь. – М.: Мысль, 1976. – 367 с.
  15. Colquhoun P.W., Costa G., Folkard S., Knauth P. Shiftwork. Problems and Solutions. – Frankfurt am Main; Berlin; Bern; New York; Paris; Wien: Lang, 1996. – 224 р.
  16. Folkard S. Circadian performance rhythms: some practical nd theoretical implications // Philosophical Transactions of the Royal Society of London. – 1990. – B 327. – P. 543 – 553.
  17. Hockey G.R.J. Changes in operator efficiency as a function of environmental stress, fatigue and circadian rhythms. – In.: Handbook of Perception and Human Performance. – New York: Wiley, 1986. – № 2. – P. 441 – 449.
  18. Knutsson A. Association between shiftwork and coronary heart disease: a review of recent findingsnad mechaisms of action // Shiftwork 2000. Implications for science, practice and business. – Krakow, 2000. – P.99 – 117.
  19. 19. Krueger G.P. Sustained work, fatigue, sleep loss and performance: a review of the issues // Work and Stress. – 1989. – 3, № 2. – P. 129 – 141.
  20. 20. Shiftwork. Occupational Medicine: State of the Art Reviews. – Philadelphia: Hanley and Belfus, Inc., 1990. – 433 p.
  21. Spencer M.B., Rogers A.S., Birch C.L., Belyavin A.J. A diary study of fatigue in air traffic controllers during a period of high workload // Shiftwork in the 21st Century. – Frankfurt am Main; Berlin; Bern; Bruxelles; New York; Oxford; Wien: Lang, 2000. – P.251 – 256.

© National Academy of Sciences of Ukraine, Bogomoletz Institute of Physiology, 2014-2021.