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The use of protective masks and the level of arterial oxygen saturation at rest and after exercise

100%
Majek P., Kaleta-Pilarska A., Barański K.
Medycyna Pracy
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2022
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vol. 73
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issue 5
363-368
EN
BackgroundStudies of influenza, and human coronaviruses provide evidence that the use of a medical mask can prevent the spread of infectious droplets from an infected person to someone else. After global public health emergency of coronavirus SARS-CoV-2 causing illness of COVID-19 was changing frequency of wearing a mask. Therefore, study was undertaken to assess whether the use of protective masks affects the level of oxygen saturation during rest and during exercise.Material and MethodsThe test consisted of a non-invasive measurement of oxygen saturation by percutaneous determination of arterial oxygen saturation with the use of the pulse oximeter. Oxygen saturation was measured during rest and after physical exertion performed without a protective mask (2 types of masks were used: surgical and FFP2), as well as during rest and after physical exertion performed with the use of a protective mask. The analysis of the oxygen saturation, heart rate, blood pressure and respiratory rate included data on 48 subjects.ResultsComparing the post-exercise and pre-exercise values showed a significant difference between all of them. There were no differences found in any variables according to the mask/no-mask status.ConclusionsA short-term physical exercise performed in a group of healthy young people using protective masks did not affect oxygen saturation, heart rate, blood pressure and respiratory rate.
2
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Evaluation of occupational physical load during 6-month international crisis management operation

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Pihlainen K., Santtila M., Vasankari T., Häkkinen K., Kyröläinen H.
International Journal of Occupational Medicine and Environmental Health
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2017
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vol. 31
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issue 2
185-197
EN
Objectives Generally, operational military duties are associated with a variety of stressors, such as prolonged physical activity (PA). However, limited information is available on the occupational workload or changes in PA during international military operations. Thus, the aim of the study was to investigate the changes in body composition, stress biomarkers, PA, and heart rate (HR) responses of 79 male soldiers during a 6-month international crisis management operation. Material and Methods Measurements were conducted 3 times in South-Lebanon during the operation. Body composition was assessed by the bioelectrical impedance method. Blood samples were analyzed for serum testosterone, sex-hormone binding globulin (SHBG), cortisol and insulin-like growth factor. Saliva sampling was used for analyzing stress biomarkers, cortisol and α-amylase. Heart rate and physical activity were monitored by a recordable belt and tri-axial accelerometer, respectively. Results Increases in muscle mass (39.2±4.1 vs. 39.5±4.2 kg, p < 0.05) and testosterone (15.9±4.6 vs. 17.2±4 nmol/l, p < 0.01), and reductions in PA variables (e.g., daily step count 9472±2547 vs. 8321±2720, p < 0.05) were observed during the first half (i.e., PRE-MID) of the study. The increase in muscle mass remained significant during the latter half (PRE-POST, 39.2±4.1 vs. 39.6±4.4 kg, p < 0.05), but also fat mass increased (MID-POST, 10.6±4.6 vs. 11.0±4.7 kg, p < 0.05) while SHBG (MID-POST, 31.8±12.1 vs. 26.6±13.2 nmol/l, p < 0.01) and cortisol (MID-POST, 445±116 vs. 400±123 nmol/l, p < 0.05) decreased. With the exception of increased concentration of salivary α-amylase (PRE-POST, 36.5±33.7 vs. 55.1±39.7 U/ml), the acute stress biomarkers and HR responses remained unchanged. Furthermore, the low quantity of PA, low HR values and subjective ratings of exertion refer to rather light physical workload. Conclusions Due to the operatively calm nature of the working environment, the present soldiers did not express any significant signs of physical overload during the study period. Int J Occup Med Environ Health 2018;31(2):185–197
3
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The levels of physical activity and fatigue among teachers in Poland and the United Kingdom in the first year after the COVID-19 pandemic

100%
Zalewska A., Gałczyk M., Sobolewski M.
Medycyna Pracy
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2024
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vol. 75
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issue 2
103-112
EN
Background The COVID-19 disease has a negative impact on the psychophysiological health of populations worldwide, including a decrease in overall physical performance and an increase in fatigue. Fatigue was one of the main symptoms reported by patients and persisted for several weeks after infection with COVID-19. Although the phenomenon of fatigue is still poorly understood, physical activity can be a supportive factor in combating feelings of fatigue and lack of energy. The purpose of this research was to assess the physical activity (PA) and fatigue levels of teachers in Poland and the United Kingdom in the first year after the COVID-19 pandemic. Material and Methods The online research was carried out among 410 teachers from Poland and the United Kingdom. The PA level was assessed using the International Physical Activity Questionnaire (IPAQ). The level of fatigue was measured using the Modified Fatigue Impact Scale (MFIS). Results Polish teachers, regardless of sex, are more physically active (the differences relate mainly to walking and moderate activity). When assessing the level of fatigue, there is a significant difference between men and women – the former indicate a higher degree of fatigue, with the difference between the sexes being particularly large in the Polish community. Quite clearly, there is an association between less activity (except walking) and more fatigue. All models show a statistically significant effect of total fatigue on total effort. Physical activity is not very strongly correlated with age but the level of fatigue increases with age. Conclusions The problem of teacher fatigue is unfortunately widespread. They should be encouraged to engage in as much PA as possible during the day. When planning and targeting fatigue reduction campaigns, PA should be encouraged and variables such as age, sex should be taken into account.
4
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Spiroergometryczna próba wysiłkowa – zastosowanie w kardiologii i medycynie pracy

84%
Kurpesa M., Jerka K., Bortkiewicz A.
Medycyna Pracy
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2014
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vol. 65
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issue 5
665-674
EN
Cardiopulmonary exercise testing is a method used to assess the exercise capacity. It is used in cardiology to define the diagnostic and prognostic information, the treatment and its effectiveness. This method is also useful in sport medicine and in occupational medicine. The cardiopulmonary exercise test involves measuring of gas exchange during exercise testing. The article presents the main parameters assessed during the test and the indications and contraindications for conducting the test. It also reveals the results of recently published clinical trials on the use of cardiopulmonary exercise test in patients with cardiovascular disease and in the working population. The study included variability of respiratory parameters during the cardiopulmonary exercise test and after its completion, as well as their impact on the prognostic value. In addition, the results of a study involving an optimal choice of interval training on the basis of oxygen consumption at peak exercise are summarized. Med Pr 2014;65(5):665–674
PL
Spiroergometryczna próba wysiłkowa jest wykorzystywana do oceny wydolności fizycznej. W kardiologii znajduje zastosowanie w diagnostyce, planowaniu terapii, ocenie jej skuteczności i ocenie rokowania. Badanie to jest również wykorzystywane przez lekarzy innych specjalizacji, np. medycyny sportowej i medycyny pracy. Test spiroergometryczny polega na bezpośrednim pomiarze wymiany gazowej podczas próby wysiłkowej. W artykule przedstawiono najważniejsze parametry oceniane podczas testu oraz wskazania i przeciwwskazania do jego przeprowadzenia. Opisano też wyniki, najciekawszych według autorów, opublikowanych w ostatnim czasie badań klinicznych dotyczących wykorzystania testu spiroergometrycznego u pacjentów z chorobami układu krążenia i osób narażonych na niekorzystne dla zdrowia czynniki związane z pracą zawodową. W publikacjach tych oceniano zmienność parametrów oddechowych podczas testu spiroergometrycznego i po jego zakończeniu oraz ich wpływ na wartość prognostyczną badania. W niniejszej pracy przedstawiono ponadto doniesienia na temat optymalnego doboru obciążenia w treningu interwałowym w oparciu o zużycie tlenu na szczycie wysiłku. Med. Pr. 2014;65(5):665–674
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