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    Wyświetlanie 1-6 z 6
    Tytuł:
    Genetic variants of uncoupling proteins-2 and -3 in relation to maximal oxygen uptake in different sports
    Autorzy:
    Holdys, Joanna
    Gronek, Piotr
    Kryściak, Jakub
    Stanisławski, Daniel
    Powiązania:
    https://bibliotekanauki.pl/articles/1039610.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    UCP2
    athletic performance
    genetic polymorphism
    UCP3
    energy efficiency
    Opis:
    Uncoupling proteins 2 and 3 (UCP2 and UCP3) as mitochondrial electron transporters are involved in regulation of ATP production and energy dissipation as heat. Energy efficiency plays an important role in physical performance, especially in aerobic fitness. The aim of this study was to examine the association between maximal oxygen uptake and genetic variants of the UCP2 and UCP3 genes. The studies were carried out in a group of 154 men and 85 women, professional athletes representing various sports and fitness levels and students of the University of Physical Education in Poznań. Physiological and molecular procedures were used, i.e. direct measurement of maximum oxygen uptake (VO2max) and analysis of an insertion/deletion (I/D) polymorphism in the 3'untranslated region of exon 8 of the UCP2 gene and a C>T substitution in exon 5 (Y210Y) of the UCP3 gene. No statistically significant associations were found, only certain trends. Insertion allele (I) of the I/D UCP2 and the T allele of the UCP3 gene were favourable in obtaining higher VO2max level and might be considered as endurance-related alleles.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 1; 71-75
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System pomiarowy do urządzenia typu stepper dedykowany do prób wysiłkowych
    A measurement system for a stepper device for the purpose of endurance testing\
    Autorzy:
    Golijanek-Jędrzejczyk, A.
    Ogielski, M.
    Rafiński, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/267274.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
    Tematy:
    system pomiarowy
    próba wysiłkowa
    test Astranda-Ryhminga
    measurement system
    maximal oxygen uptake
    Astrand-Rhyming submaximal test
    Opis:
    W artykule przedstawiono system pomiarowy opracowany do urządzenia typu stepper, umożliwiającego przeprowadzenie próby wysiłkowej zgodnie z testem Astrand’aRyhminga. Budowa prototypu systemu pomiarowego wymagała modyfikacji mechanicznej urządzenia typu stepper udostępnionego przez Akademię Wychowania Fizycznego i Sportu w Gdańsku oraz doboru części sprzętowej systemu pomiarowego (czujników, mikrokontrolera). Celem projektu było również wykonanie oprogramowania umożliwiającego rejestrację i wizualizację wyników pomiarowych oraz wyznaczenie parametrów stosowanych do oceny wydolności organizmu człowieka W artykule zaprezentowano wyniki z przeprowadzonych testów potwierdzające poprawność opracowanego systemu pomiarowego.
    This paper presents the design and construction of the measurement system for a stepper device, for the purpose of executing endurance tests in accordance with Astrand’a - Rhyming submaximal test. Astrand'a - Rhyming submaximal test is the most widely used indirect method in determining parameter VO2max, which is determined by the heart rate at submaximal work. This test requires the stepper with a height of 30 cm and 40 cm (respectively for women and men) a stopwatch and a metronome. The metronome frequency is set at 90 beats per minute. The exercise time is about 5 minutes. The construction of the prototype measurement system required a mechanical modification of the stepper device provided by the Gdańsk University of Physical Education and Sport as well as designing the hardware part of the measurement system (sensors, electronics, microcontroller). A specialized software that enables registration and visualization of test results was also made. The paper presents test results to confirm the correctness of the designed system.
    Źródło:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2016, 51; 59-62
    1425-5766
    2353-1290
    Pojawia się w:
    Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative analysis of the 1-mile run test evaluation formulae: Assessment of aerobic capacity in male law enforcement officers aged 20–23 years
    Autorzy:
    Kayihan, Gürhan
    Özkan, Ali
    Köklü, Yusuf
    Eyuboğlu, Ender
    Akça, Firat
    Koz, Mitat
    Ersöz, Gülfem
    Powiązania:
    https://bibliotekanauki.pl/articles/2178814.pdf
    Data publikacji:
    2014-05-17
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    Maximal oxygen uptake
    field aerobic tests
    police officers
    one mile run test
    physical fitness
    young adults
    Opis:
    Objectives: The purpose of this study was to compare values of aerobic performance in the 1-mile run test (1-MRT) using different formulae. Material and Methods: Aerobic capacities of 351 male volunteers working for the Turkish National Police within the age range of 20-23 years were evaluated by the 1-MRT and the 20-metre shuttle run (20-MST). $\text{VO}_\text{2max}$ values were estimated by the prediction equations developed by George et al. (1993), Cureton et al. (1995) and Kline et al. (1987) for the 1-MRT and by Leger and Lambert (1982) for the 20-MST. Results: The difference between the results of the different formulae was significant (p = 0.000). The correlation coefficient between the estimated $\text{VO}_\text{2max}$ using Cureton's equation, George's equation, Kline's equation and the 20-MST were 0.691 (p < 0.001), 0.486 (p < 0.001) and 0.608 (p < 0.001), respectively. The highest correlation coefficient was between the $\text{VO}_\text{2max}$ estimated by the 20-MST and Cureton's equation. Similarly, the highest correlation coefficient (r = -0.779) was between the 1-mile run time and the $\text{VO}_\text{2max}$ estimated by Cureton's equation. Conclusions: When analysing more vigorous exercise than sub-maximal exercise, we suggest that Cureton's equation be used to predict the $\text{VO}_\text{2max}$ from 1-mile run/walk performance in large numbers of healthy individuals with high $\text{VO}_\text{2max}$. This research compares the use of 3 different formulae to estimate $\text{VO}_\text{2max}$ from 1-mile run/walk performance in male law enforcement officers aged 20-23 years for the first time and reports the most accurate formula to use when evaluating aerobic capacities of large numbers of healthy individuals.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2014, 27, 2; 165-174
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Purine metabolism in the light of aerobic and anaerobic capacity of female boxers
    Autorzy:
    Domaszewska, Katarzyna
    Szewczyk, Piotr
    Kryściak, Jakub
    Michalak, Edyta
    Podgórski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1030895.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    Acid-Base Balance (ABB)
    Wingate anaerobic test
    anaerobic threshold (AT)
    maximal oxygen uptake
    purine nucleotides
    uric acid
    Opis:
    The aim of the work was to assess the intensity of purine nucleotide degradation during maximum physical exercise. 5 elite female boxers were the subject of the study. Each of them underwent two exercise stress tests in order to evaluate the level of V̊O2peak and the level of anaerobic capacity during a Wingate test. The study involved collecting capillary and venous blood samples at rest and after the exercise test to determine the Acid-Base Balance (ABB), concentration of lactic acid (LA) and purine metabolism nucleotides. The average value of V̊O2peak was 40.92 (SD = 4.087) ml/kg/min, the average anaerobic capacity Ppeak was 7.57 (SD = 0.380) Watt/kg. The workload resulted in significant changes in the level of ABB and LA after both of the exercise stress tests (p < 0.001). Concentrations of hypoxanthine (Hx), xanthine (X) and uric acid (UA) in the blood increased significantly after the Wingate test (p < 0.05). The level of plasma purine nucleotides at rest and after standard exercise may be a useful tool for monitoring the adaptation of energetic processes in different training phases and support the overload diagnosis.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2020, 30, 2; 97-106
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy Cost of the Trondheim Firefighter Test for Experienced Firefighters
    Autorzy:
    Von Heimburg, E.
    Medbo, J. I.
    Powiązania:
    https://bibliotekanauki.pl/articles/89766.pdf
    Data publikacji:
    2013
    Wydawca:
    Centralny Instytut Ochrony Pracy
    Tematy:
    blood lactate concentration
    fire fighting
    maximal oxygen uptake
    lactate threshold
    pulmonary ventilation
    rating of perceived exertion
    wentylacja płuc
    straż pożarna
    środowisko cieplne
    strażak
    środowisko gorące
    Opis:
    Aim. The aim of this study was to measure aerobic demands of fire fighting activities including exercise in the heat. Methods. Twenty-two experienced firefighters performed the Trondheim test simulating fire fighting tasks including work in the heat. Maximal oxygen uptake (VO2 max), heart rate (HR) and ventilation were recorded continuously. Data were compared with results obtained during a treadmill test during which the participants were dressed as smoke divers. Results. The participants completed physical parts of the Trondheim test in ~12 min (range: 7.5–17.4). Time to complete the test was closely related to the participant’s VO2 max. HR of ~170 beats/min and pulmonary ventilation of ~100 L/min were higher than at lactate threshold (LT) during laboratory tests. VO2 averaged over the test’s physical part was 35 ± 7 ml/min/kg, which was at the same or below the level corresponding to the participants’ LT. Physically fit participants completed the test faster than less fit participants. Slower and physically less fit participants consumed more air and used more oxygen than faster and physically more fit participants. Conclusion. The Trondheim test is physically demanding; it distinguishes physically fit and less fit participants.
    Źródło:
    International Journal of Occupational Safety and Ergonomics; 2013, 19, 2; 211-225
    1080-3548
    Pojawia się w:
    International Journal of Occupational Safety and Ergonomics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Maximal oxygen uptake is associated with allele -202 A of insulin-like growth factor binding protein-3 (IGFBP3) promoter polymorphism and (CA)n tandem repeats of insulin-like growth factor IGF1 in Caucasians from Poland
    Autorzy:
    Gronek, Piotr
    Holdys, Joanna
    Kryściak, Jakub
    Wieliński, Dariusz
    Słomski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/1039282.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    IGF1
    IGFBP3
    athletic performance
    genetic polymorphism
    energy efficiency
    Opis:
    Physical fitness is a trait determined by multiple genes, and its genetic basis is modified by numerous environmental factors. The present study examines the effects of the (CA)n tandem repeats polymorphism in IGFI gene and SNP Alw21I restriction site -202 A>C polymorphism in IGF1BP3 on VO2max - a physiological index of aerobic capacity of high heritability. The study sample consisted of 239 (154 male and 85 female) students of the University School of Physical Education in Poznań and athletes practicing various sports, including members of the Polish national team. An association was found between -202 A/C polymorphism of IGFBP3 gene with VO2max in men. Higher VO2max values were attained by men with CC genotype, especially male athletes practicing endurance sports and sports featuring energy metabolism of aerobic/anaerobic character. A statistically significant influence of allele 188 and genotype 188/188 of tandem repeats (CA)n polymorphism of IGF1 gene on VO2max was found in women. Also, lower values of maximal oxygen uptake were noted in individuals with allele 186 or genotype 186/186, and higher VO2max values in athletes with allele 194.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 2; 245-252
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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