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    Wyświetlanie 1-13 z 13
    Tytuł:
    Comparison of two methods for the determination of nitrogen and oxygen isotope composition of dissolved nitrates
    Autorzy:
    Chmura, W. M.
    Różański, K.
    Kuc, T.
    Gorczyca, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/146460.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    nitrates
    isotope composition
    denitrification
    nitrogen-15
    oxygen-18
    Opis:
    Two methods of sample preparation for isotopic analyses of nitrates dissolved in water are presented: (i) chemical conversion of NO3– to N2 and CO2, and (ii) bacterial reduction of NO3– to N2O, followed by the measurement of nitrogen and oxygen isotope composition of these gases. Both methods have been successfully used for routine isotope analyses of dissolved nitrates in different types of water. The chemical conversion method, requiring ca. 300 mi mol of NO3– yields relatively good precision, in the order of 0.3‰ for delta15N, and 0.6‰ for delta18 O. The bacterial reduction method was modified in this study to accommodate samples of intermediate size (ca. 30 mmol of NO3–) to provide sufficient amount of N2O gas for isotope analysis using conventional IRMS. The method demonstrated satisfactory results, although sample preparation was more complicated and required access to microbiological laboratory.
    Źródło:
    Nukleonika; 2009, 54, 1; 17-23
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution of stable isotopes in the River Sava in Serbia
    Autorzy:
    Miljević, N. R.
    Golobočanin, D. D.
    Nadeždić, M. L.
    Ogrinc, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/971539.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    hydrogen-2
    oxygen-18
    evaporation
    Sava river
    river water
    Opis:
    Grab water samples were collected from the research ship ‘ARGUS’ at four locations in Serbia, Ostružnica (17 rkm), Šabac (103.6 rkm), Sremska Mitrovica (136.4 rkm), and Jamena (195.0 rkm) from the mid-river, and near the left and right banks during longitudinal survey of the River Sava performed in August 2006. The stable isotope ratios of hydrogen and oxygen (2H/1H and 18O/16O) were determined along with other physicochemical and biological parameters. The δ18O values of river water ranged from −9.2‰ to −8.5‰, and δ2H values ranged from −66‰ to −61‰. Samples taken from the mid-river along the main stem of the Sava at all examined locations appeared to be isotopically the same stream water with a value of −9.0 ± 0.1‰ for δ18O and −65 ± 1.0‰ for δ2H. The results are considered in relation to the isotopic changes known to occur in water subjected to evaporation and mixing.
    Źródło:
    Nukleonika; 2008, 53, suppl. 2; 129-135
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stable isotope deuterium as a natural tracer of mixing processes in rivers
    Autorzy:
    Palige, J.
    Ptaszek, S.
    Zimnicki, R.
    Chmielewski, A. G.
    Wierzchnicki, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/146756.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    stable isotopes
    tracer
    deuterium
    oxygen-18
    river
    water flow
    Opis:
    The possibility of application of naturally existing differences in isotope contents 18O/16O, 2H/1H in waters for investigation of transport and mixing of various waters in the tributary-river system is presented. Experiments carried out on the Bug-Narew rivers-Zegrze Lake and the BugoNarew-Vistula rivers systems have indicated that the hydrogen isotope ratio 2H/1H can be used as an intrinsic tracer of natural mixing processes occurring in rivers. The IRMS methodology was used for isotope ratio measurement of water samples. The degrees of water mixing as a function of distance from the confluence point of rivers were determined. The obtained results indicate that in water systems where the natural differences in ?2H are higher than 5‰ this technique can replace the time-consuming and expensive dye (or radiotracer) dispersion tests for evaluation of pollutant transport in rivers.
    Źródło:
    Nukleonika; 2008, 53, 2; 63-67
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seasonal variability of the soil CO2 flux and its isotopic composition in southern Poland
    Autorzy:
    Gorczyca, Z.
    Rozanski, K.
    Kuc, T.
    Michalec, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/148390.pdf
    Data publikacji:
    2003
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    carbon-14
    carbon-13
    isotopic composition
    soil CO2
    oxygen-18
    Opis:
    The flux and isotopic composition of soil CO2 has been monitored at three sites located in the southern Poland, during the time period: January 1998 - December 2000. The sites represent typical ecosystems appearing in central Europe: mixed forest, cultivated agricultural field and grassland. To monitor the flux and isotopic composition of soil CO2, the method based on the inverted cup principle was used. The flux of soil CO2 reveals distinct seasonal fluctuations, with maximum values up to ca. 20 mmolźm-2 h-1 during summer and around ten times lower values during winter. Also significant differences among the monitored sites were detected, the CO2 flux being the highest for the mixed forest site and ca. two times lower for the grassland site. The 13C content of the soil CO2 flux is nearly constant throughout the year, with d13C values essentially reflecting the isotopic composition of the soil organic matter and the vegetation type. The 18O content of the soil CO2 flux shows a remarkable seasonality, with distinctly less negative d18O values recorded during summer. This seasonality is highly reduced in the CO2 sampled from different depths of the soil. The radiocarbon content of the CO2 flux turned out to be non-distinguishable, within the uncertainty of the measurements, from current 14C levels in atmospheric carbon dioxide. However, significant reduction of the radiocarbon content was measured in the soil CO2 sampled at 80 cm, when compared to the uppermost layer, reflecting increasing age of soil organic matter with depth.
    Źródło:
    Nukleonika; 2003, 48, 4; 187-196
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of the stable oxygen isotope (18 O) to trace the distribution and uptake of water in riparian woodlands
    Autorzy:
    Lambs, L.
    Loudes, J.
    Berthelot, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147005.pdf
    Data publikacji:
    2002
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    oxygen isotope
    riparian forest
    water origin
    xylem sap
    Opis:
    Streamside vegetation forming narrow "corridors" in temperate regions, is typically dominated by deciduous tree species reflecting strong influences by human activities. Riparian woodlands depend on hydrological resources and have to adapt to rapid changes in water levels and soil moisture conditions. Three main water sources are typically present in the riparian zone: river water originating in the mountains, ground water and rainfall. Stable isotopes, such as oxygen-18, are useful tools which allow for water movement to be traced within the riparian zone and which help to identify water sources utilised by the trees growing in these areas.
    Źródło:
    Nukleonika; 2002, 47,suppl.1; 71-74
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cooling and warming of climate of the Earths Northern Hemisphere (on the basis of fluctuations of the oxygen isotope δ18O and dendrological data)
    Autorzy:
    Boryczka, Jerzy
    Stopa-Boryczka, Maria
    Unton-Pyziołek, Arleta
    Gieszcz, Piotr
    Miłaszewska, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/2034147.pdf
    Data publikacji:
    2010-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    isotope δ18O
    Devon Island
    Pinus sylvestris
    Picea abies
    tree the ring widths
    solar radiation
    periods
    moment of inertia of planets
    mass momentum of largest planets
    forecast
    Opis:
    Content fluctuations of the oxygen isotope δ18O in the Devon Island ice core during the last 100 000 years are a measure of climate fluctuations in the Northern Hemisphere. The course of content of the oxygen isotope δ18O and the sums of solar radiation reaching the upper edge of the atmosphere are characterized by approximate minima and maxima (by positive correlation). This proves that, during the last hundred thousand years, climate fluctuations (cooling and warming) in the Northern Hemisphere were conditioned by long-term changes of the orbit and altitude of the Earth's axis. Climate fluctuation forecasts for the Northern Hemisphere were developed for the next 40 000 years on the basis of the established periods of change of the oxygen isotope δ18O and the known solar radiation periodicity. Climate changes in Europe during the last 25000 years were presented together with a forecast for 1000 years (according to organic substances in deposits and radiation) as well as climate changes in Europe in the period from -500 years BP to 2100 AD (according to δ18O and pine tree-rings). It showed that climate changes depended on the concentration of planet mass in relation to the ecliptic plane (from the gravitational impact of planets on the Sun). Concentration courses of planet mass in the Solar System and climate fluctuations in the Northern Hemisphere were compared. Of interest are examples of synchronic fluctuations, i.e. dispersal of planet mass in the Solar System, the widths of pine and spruce tree rings and air temperatures in Europe.
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2010, 14; 47-58
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany klimatu półkuli północnej (na podstawie wahań promieniowania słonecznego i izotopu tlenu δ18O)
    Changes of climate of the northern hemisphere (on the basis of fl uctuations of the solar radiation and oxygen isotope δ18O)
    Autorzy:
    Boryczka, J.
    Stopa-Boryczka, M.
    Unton-Pyziolek, A.
    Gieszcz, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084536.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    zmiany klimatyczne
    polkula polnocna
    promieniowanie sloneczne
    izotop tlenu δ18O
    prognozy
    klimat
    Źródło:
    Prace i Studia Geograficzne; 2011, 47; 25-32
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oxygen Emissions from Single-Crystalline Fe$\text{}_{3}$O$\text{}_{4}$ Surfaces Induced by Low-Energy Ion Bombardments
    Autorzy:
    Kim-Ngan, N.-T. H.
    Soszka, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2046830.pdf
    Data publikacji:
    2006-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.35.-p
    61.18.Bn
    Opis:
    Negative-charged ion energy spectra of the Fe$\text{}_{3}$O$\text{}_{4}$ (001) and (111) surface revealed large peaks attributed to the O$\text{}^{-}$ recoils from a binary collision. Under Ar$\text{}^{+}$ ion bombardments such an emission was largely affected by the screening effect of the Fe ions. A distinguished peak related to the O$\text{}^{+}$ recoil ions was observed under Ne$\text{}^{+}$ ion bombardments, while such a peak was merged into the high background in the case of Ar$\text{}^{+}$ ion ones. A weak effect from the Verwey transition was found on oxygen emissions. For the (111) surface a small peak characteristic of the O$\text{}^{+}$ recoils from double collisions appeared in the energy spectra around 140-170 K and a minimum was observed in both R$\text{}^{+}$(T) and R$\text{}^{-}$(T) curves under 6 keV Ne$\text{}^{+}$ ion beam.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 6; 715-721
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elementy walidacji metody oznaczania δ18O i δD próbek ciekłych (EA-IRMS)
    Validation of δ18O i δD determination method in aqueous samples (EA-IRMS)
    Autorzy:
    Janiga, M.
    Bieleń, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1835465.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Nafty i Gazu - Państwowy Instytut Badawczy
    Tematy:
    skład izotopowy tlenu
    skład izotopowy wodoru
    δ18O
    δD
    EA-IRMS
    walidacja
    oxygen isotopic composition
    hydrogen isotopic composition
    validation
    Opis:
    Celem pracy było wykonanie elementów walidacji metodyki oznaczeń składu izotopowego tlenu i wodoru próbek ciekłych (wody) przy użyciu spektrometru masowego połączonego z analizatorem elementarnym (EA-IRMS). Zarówno w przypadku oznaczeń składu izotopowego wodoru, jak i tlenu wykonano kalibrację przy zastosowaniu wzorca VSMOW2 oraz wyznaczono stretching factor (wykorzystując wzorzec SLAP2). Dla obydwu pierwiastków metody są dokładne (wartości rzeczywiste wzorca znajdują się w wyznaczonych przedziałach). Odchylenia standardowe powtarzalności i odtwarzalności są na niskim poziomie (dla tlenu: 0,15‰ i 0,21‰; dla wodoru: 1,2‰ i 1,3‰). Wartość niepewności pomiaru w przypadku oznaczeń składu izotopowego tlenu wynosi 0,569885% (czyli 0,310644‰ po przeliczeniu dla wzorca SLAP2), a w przypadku wodoru: 0,479804% (czyli 2,022375‰ po przeliczeniu dla wzorca SLAP2).
    The aim of the study was to perform validation of a methodology of isotopic composition determinations of oxygen and hydrogen liquid samples (water) using a mass spectrometer combined with an elemental analyzer (EA-IRMS). For the determination of both the hydrogen and oxygen isotopic composition, calibration was performed by using VSMOW2 standard, and stretching factor was determined using the SLAP2 standard. For both elements methods are accurate (the actual value can be found at designated intervals). The standard deviations of repeatability and reproducibility are low (for oxygen 0.15‰ and 0.21‰, for hydrogen 1.2‰ and 1.3‰). The value of measurement uncertainty for the determination of the isotopic composition of oxygen is 0.569885% (or 0.310644‰ after calculation for the SLAP2 standard) and for hydrogen is 0.479804% (or 2.022375 ‰ after calculation for SLAP2 standard).
    Źródło:
    Nafta-Gaz; 2017, 73, 7; 473-478
    0867-8871
    Pojawia się w:
    Nafta-Gaz
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oxygen isotope analysis of shark teeth phosphates from Bartonian (Eocene) deposits in Mangyshlak peninsula, Kazakhstan
    Autorzy:
    Pelc, Andrzej
    Hałas, Stanisław
    Niedźwiedzki, Robert
    Powiązania:
    https://bibliotekanauki.pl/articles/2086485.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    Bartonian
    carbonate
    Mangyshlak peninsula
    phosphate
    shark teeth
    δ18O
    δ13C
    Opis:
    We report the results of high-precision (±0.05‰) oxygen isotope analysis of phosphates in 6 teeth of fossil sharks from the Mangyshlak peninsula. This precision was achieved by the offline preparation of CO2 which was then analyzed on a dual-inlet and triple-collector IRMS. The teeth samples were separated from Middle- and Late Bartonian sediments cropping out in two locations, Usak and Kuilus. Seawater temperatures calculated from the δ18O data vary from 23–41oC. However, these temperatures are probably overestimated due to freshwater inflow. The data point at higher temperature in the Late Bartonian than in the Middle Bartonian and suggest differences in the depth habitats of the shark species studied.
    Źródło:
    Mineralogia; 2011, 42, 1; 53--61
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oxygen isotope analysis of shark teeth phosphates from Bartonian (Eocene) deposits in Mangyshlak peninsula, Kazakhstan
    Autorzy:
    Pelc, A.
    Hałas, S.
    Niedźwiedzki, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086536.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Mineralogiczne
    Tematy:
    Bartonian
    carbonate
    Mangyshlak peninsula
    phosphate
    shark teeth
    δ18O
    δ13C
    Opis:
    We report the results of high-precision (±0.05‰) oxygen isotope analysis of phosphates in 6 teeth of fossil sharks from the Mangyshlak peninsula. This precision was achieved by the offline preparation of CO2 which was then analyzed on a dual-inlet and triple-collector IRMS. The teeth samples were separated from Middle- and Late Bartonian sediments cropping out in two locations, Usak and Kuilus. Seawater temperatures calculated from the δ18O data vary from 23–41oC. However, these temperatures are probably overestimated due to freshwater inflow. The data point at higher temperature in the Late Bartonian than in the Middle Bartonian and suggest differences in the depth habitats of the shark species studied.
    Źródło:
    Mineralogia; 2011, 42, 1; 53--61
    1899-8291
    1899-8526
    Pojawia się w:
    Mineralogia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Faunal dynamics across the Silurian-Devonian positive isotope excursions (delta13C, delta18O) in Podolia, Ukraine: Comparative analysis of the Ireviken and Klonk events
    Autorzy:
    Racki, G.
    Balinski, A.
    Wrona, R.
    Malkowski, K.
    Drygant, D.
    Szaniawski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/20924.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    fauna dynamics
    Silurian
    Devonian
    isotope excursion
    Podolia
    Ukraine
    comparative analysis
    Ireviken event
    Klonk event
    Brachiopoda
    Conodonta
    Chitinozoa
    carbon isotope
    oxygen isotope
    geochemistry
    Opis:
    Two global isotopic events, the early Sheinwoodian (early Wenlock) and that at the Silurian–Devonian transition, have been comprehensively studied in representative carbonate successions at Kytayhorod and Dnistrove, respectively, in Podolia, Ukraine, to compare geochemistry and biotic changes related correspondingly to the Ireviken and Klonk events. These two large−scale isotope excursions reveal different regional ecosystem tendencies. The well−defined increasing trend across the Llandovery–Wenlock boundary in siliciclastic input, redox states and, supposedly, bioproductivity, was without strict correlative relations to the major ¹³C enrichment event. The environmental and biotic evolution was forced by eustatic sea−level fluctuations and two−step climate change toward a glaciation episode, but strongly modified by regional epeirogeny movements due to location near the mobile Teisseyre−Törnquist Fault Zone. Thus, the global early Sheinwoodian biogeochemical perturbation was of minor depositional significance in this epeiric sea, as in many other Laurussian domains. Conversely, the Podolian sedimentary record of the Klonk Event exhibits temporal links to the abrupt δ¹³C anomaly, overprinted by a tectonically driven deepening pulse in the crucial S–D boundary interval. This carbon cycling turnover was reflected in the regional carbonate crisis and cooling episodes, paired with a tendency towards eutrophication and recurrent oxygen deficiency, but also with major storms and possible upwelling. Faunal responses in both Podolian sections follow some characters of the Silurian pattern worldwide, as manifested by conodont changeover prior to the major early Sheinwoodian isotopic/climatic anomaly. This contrasts with the relative brachiopod and chitinozoan resistances in the course of the Ireviken Event. Also, during the Klonk Event, a moderate faunal turnover, both in benthic and pelagic groups, occurred only near the very beginning of the prolonged ¹³C−enriched timespan across the system boundary, possibly due to progressive dysoxia and temperature drop. The characters point to a peculiarity of the Klonk Event by comparison with the Silurian global events, and some similarity already to the succeeding Devonian transgressive/anoxic episodes.
    Źródło:
    Acta Palaeontologica Polonica; 2012, 57, 4
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reactivity of the Oxygen Transport System of Elite Athletes with Different Individual and Typological Properties in their Nervous Systems
    Reaktywność systemu transportu tlenu u elitarnych sportowców z różnymi indywidualnymi i typologicznymi właściwościami ich układów nerwowych
    Autorzy:
    Lyzohub, Volodymyr
    Pustovalov, Vitalii
    Kozhemiako, Tetiana
    Khomenko, Sergii
    Bezkopylny, Oleksandr
    Powiązania:
    https://bibliotekanauki.pl/articles/31341068.pdf
    Data publikacji:
    2024
    Wydawca:
    Akademia Bialska im. Jana Pawła II
    Tematy:
    anaerobic exercise
    walk test
    nervous processes
    functional performance
    aerobic exercise
    ćwiczenia anaerobowe
    test chodu
    procesy nerwowe
    wydajność funkcjonalna
    ćwiczenia aerobowe
    Opis:
    Background. The mechanisms of neurovegetative interaction of the functional reactivity of the oxygen transport system (OTS) and genetically determined typological properties of the central nervous system (CNS) were studied. Material and methods. The typological properties of the central nervous system of elite football players (32 individuals) were determined on the “Diagnost-1” neurodynamic complex. The reactivity of the OTS was investigated in a stepincreasing running speed test using the Jaeger Oxycon Mobile gas analyzer. Results. The dependence of the reactive properties of the OTS on the genetically determined functional mobility of nervous processes (FMNP) was established. Statistically significant higher indicators of blood stroke volume, carbon dioxide release rate (VСO2) and blood lactate (НLa) were found in the athletes with a higher level of FMNP than in individuals with a low degree of typological property (р=0.033-0.045). The athletes with low FRNP were characterized by statistically significant high values of heart rate (HR) and rate of oxygen uptake (VO2 max). The indicators of minute volumes of blood and respiration did not show statistically significant differences in groups of sportsmen with different gradations of FMNP (р=0.064-0.078). Conclusions. The theoretical model and mechanisms of interaction of the individual-typological property of FMNP with the functional reactivity of OTS and the possibility of using the results to evaluate the playing activity of football players were discussed.
    Wprowadzenie. Zbadano mechanizmy interakcji neurowegetatywnej funkcjonalnej reaktywności systemu transportu tlenu (ang. oxygen transport system – OTS) i określonych genetycznie właściwości typologicznych ośrodkowego układu nerwowego (OUN). Materiał i metody. Właściwości typologiczne ośrodkowego układu nerwowego elitarnych piłkarzy (32 osoby) zostały określone na kompleksie neurodynamicznym „Diagnost-1”. Reaktywność OTS została zbadana w teście stopniowego zwiększania prędkości biegu przy użyciu analizatora gazowego Jaeger Oxycon Mobile. Wyniki. Ustalono zależność reaktywnych właściwości OTS od uwarunkowanej genetycznie funkcjonalnej mobilności procesów nerwowych (FMNP). U sportowców z wyższym poziomem FMNP stwierdzono istotne statystycznie wyższe wskaźniki objętości wyrzutowej krwi, szybkości uwalniania dwutlenku węgla (VСO2) i mleczanu we krwi (НLa) niż u osób o niskim stopniu właściwości typologicznych (р=0,033-0,045). Sportowcy z niskim FRNP charakteryzowali się statystycznie istotnie wysokimi wartościami częstości akcji serca (HR) i szybkości poboru tlenu (VO2 max). Wskaźniki objętości minutowej krwi i oddychania nie wykazywały istotnych statystycznie różnic w grupach sportowców o różnej gradacji FMNP (р=0,064-0,078). Wnioski. Omówiono model teoretyczny i mechanizmy interakcji indywidualno-typologicznej właściwości FMNP z funkcjonalną reaktywnością OTS oraz możliwość wykorzystania wyników do oceny aktywności gry piłkarzy.
    Źródło:
    Health Problems of Civilization; 2024, 18, 1; 83-93
    2353-6942
    2354-0265
    Pojawia się w:
    Health Problems of Civilization
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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