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    Wyświetlanie 1-5 z 5
    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
    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:
    Newer Perspectives in Lactate Threshold Estimation for Endurance Sports – A Mini-Review
    Autorzy:
    Krishnan, Anup
    Guru, Chandra Sekara
    Sivaraman, Arumugam
    Alwar, Thiagarajan
    Sharma, Deep
    Angrish, Piyush
    Powiązania:
    https://bibliotekanauki.pl/articles/1832381.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    anaerobic threshold
    physical endurance
    athletic performance
    exercise testing
    lactate threshold
    Opis:
    Lactate threshold (LT) estimation in endurance sports continues to be a widely controversial field amongst sports scientists and students despite beyond 50 years of research. With the advent of technology and superior sensors, LT research has ventured into newer fields involving wearables and artificial intelligence. Still, there is a felt need to understand the focused areas of LT research and to guide the students, sports scientists and coaches. The main aim of this mini-review is to identify research categories in a descriptive manner and to synthesize broad themes for future research from latest literature. A comprehensive electronic search in three databases was performed including only original free full text research articles conducted in athletes and heathy subjects, published in English between 2016 and 2020 following PRISMA guidelines. Out of screened 466 articles, 14 articles were finally shortlisted as per inclusion criteria and the findings were summarized. Five research categories were identified and reviewed. To conclude, there is a need for consensus in Graded Exercise test protocols used, LT concepts validity for specific sports and the application of valid, reliable noninvasive LT estimation methods in endurance sports. Synthesized broad themes would help guide sports scientists, students and researchers for future research.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2021, 35, 3; 99-116
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship of maximal isometric torque produced in flexors and extensors rate to technique by judo athletes
    Autorzy:
    Sterkowicz, S.
    Lech, G.
    Sterkowicz-Przybycień, K.
    Chwała, W.
    Ambroży, T.
    Pałka, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/307561.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    skład ciała
    biomechanika
    sport
    athletic performance
    body composition
    biomechanics
    martial arts
    Opis:
    Purpose: Development of strength is one of essential elements of motor preparation of judo athletes. The aim this study was to examine the influence of body composition and the joint torques on successful performance of various judo techniques. Methods: Twentyfive judo athletes participated in 175 judo bouts, which were video-recorded during the All-Polish competitions. Biomechanical classification of technical actions was used. The age and athletic experience of the subjects were 18 and 8.8 years, respectively. Their body height was 179.4 cm (Martin’s type anthropometer) and body mass was 80.3 kg (Sartorius F 1505 – DZA scales). Percentage of fat (10.6%) was estimated using skinfold result measurements. BMI (24.9 kgm–2), fat-free mass index (21.9 kgm–2) and fat mass index (3.0 kgm–2) were calculated. Maximum torques measured under static conditions were evaluated 2–3 days after the tournament. Descriptive statistics and ANOVA were conducted ( p 0.05). Results: Balancing of maximum torques in the muscles of the pelvic and illiac regions caused more frequent performance of physical lever-type throwing techniques, compared to couple of force-type throwing techniques. A negative correlation was found between body fat and value of force recorded for knee flexors and between the frequency of using techniques during groundwork and torques measured in hip extensors. High correlation of fat-free mass index and relative elbow flexor torque was found. Conclusions: The relationship between body composition and frequency of techniques used in a tournament, and joint torques developed by athletes were found.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2018, 20, 2; 65-71
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Short-term effects of elastic taping on dancer’s postural control performance
    Autorzy:
    Vinken, Pia M.
    Hennig, Linda
    Heinen, Thomas
    Powiązania:
    https://bibliotekanauki.pl/articles/1054591.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    athletic performance
    force platform
    kinesiotape
    postural control measurements
    Opis:
    It was explored whether three different applications of elastic tape on the lower limbs of active, healthy dancers influence their postural control performance. 15 active, healthy dancers randomly performed demi-pointes and sissone ouvertes on a force platform in four experimental conditions: 1. no tape application, 2. ankle joint tape application, 3. leg muscle tape application, and 4. control tape application. Four kinetic parameters were calculated in order to represent postural control performance: 1) variable error of force magnitude in forward-backward direction, 2) variable error of force magnitude in side to side direction. 3) peak impact force during landing phase and 4) episodes of overall duration. Results revealed a task-dependent performance-enhancing effect and an application-specific performance-influencing effect concerning vertical ground reaction force measurements. It is concluded that the application of elastic tape for healthy, active dancers may on the one hand enhance parameters of postural control, whereas the same elastic tape application may hamper other performance related aspects of typical modern and classical ballet dance routines. Conflicting scientific results may thus indicate that generalized effects are controversial and positive influences in one specific characteristic can induce a decrease in another performance influencing characteristic.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2014, 8, 4; 61-72
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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