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Tytuł:
Acute evaluation of static and dynamic stability of the lumbopelvic region after paravertebral stretching
Autorzy:
Coracini, C.A.
Bortoletto, P.
Provensi, E.
Furtuoso, M.V.
Bertolini, G.R.F.
Carvalho, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/2098560.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Tematy:
muscle stretching exercises
muscle relaxation
muscle strength
Opis:
Introduction and objectives. Since the paravertebral muscles promote dynamic stability to protect the spine, the aim of this study was to verify the association between the acute effect of the stretching support time for the multifidus muscle, and changes in the static and dynamic stability of the lumbopelvic region. Materials and method. A total of 46 volunteers were cross-submitted to three different stretching interventions for the multifidus muscle, being the manutention of stretching time the variation between interventions: 10, 30 and 60 seconds. Each volunteer was submitted to the three interventions with a minimum interval of 7 days and a maximum of 10 days. The order of the interventions was determined by lot. First, pre-intervention values for static and dynamic stability were collected using a biofeedback pressure unit. Subsequently, the sample was forwarded for intervention according to its group; after the completion of the same, data were collected on post-intervention stability. The data were analyzed using SPSS 20.0 software and Chi-square test, with a significance level of 5% (α = 0.05). Results. There was no significant association between the manutention of stretching time and static stability, being χ2(4)=0.812; p=0.949. Similarly, there was no significant association between the stretching support time and dynamic stability, and χ2(4)=1.517; p=0.827. Conclusion. In conclusion, there was no significant association between stretching time of the paravertebral muscles and static and dynamic stability.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2019, 13, 4; 150-152
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exercise induced muscle damage may be improved by a single dose of intra-muscular platlet rich plasma: a pilot study
Autorzy:
Punduk, Zekine
Oral, Onur
Aydinoglu, Ramazan
Ozkayin, Nadir
Powiązania:
https://bibliotekanauki.pl/articles/1054588.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Platlet rich plasma
exercise induced muscle damage
muscle recovery
muscle soreness
Opis:
Platelet-rich plasma (PRP) is being increasingly used in the modern medicine as a material stimulating, regenerating and accelerating tissue healing, including muscle injuries in sports. The aim of the present study was to determine the effect of PRP on strength recovery in exercise induced muscle damage (EIMD). A baseline value was established in six healthy male volunteers during maximal voluntary strength isometric contractions (MVC) of the elbow flexors in both arms. This was followed by MVC performance (80% IRM) concentric-eccentric exercise of both elbow flexors until point of exhaustion, and 24 h later the subjects were injected with PRP in the non-dominant arm (PRP-arm). Maximal isometric strength and muscle soreness was compared before and at 24, 48, 72 and 96 h after delayed onset muscle soreness (DOMS) between the arms. The results indicate that the muscle soreness was significantly decreased in PRP administered arm when compared to control-arm, however, the levels for isometric flexors peak torque (PT) and average strength (AS) significantly declined in the bout arm post exercise induced muscle damage. Administration of PRP had no effect on the muscle strength parameters, however, flexor PT values were higher in PRP administered arm compared to the control arm, but this was only achieved on the second day of post-exercise induced muscle damage.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2014, 8, 4; 19-26
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Fatigue on Muscle Temperature
Autorzy:
Bartuzi, P.
Roman-Liu, D.
Wiśniewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/90607.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
EMG
muscle fatigue
muscle temperature
biceps brachii
Opis:
The aim of the study was to investigate the possibility of using infrared (IR) thermography for assessing muscle fatigue during low effort. Three tests at constant levels of load 5, 15 and 30% of maximum voluntary contraction (MVC) lasting 5 min each were performed on a group of 10 men. Temperature and electromyographic (EMG) signal were registered from biceps brachii (BB). Analysis focused on the influence of load on the values and changes in time of muscle temperature. Correlations between temperature and EMG parameters (RMS, MPF and MF) were also analysed. Constant load sustained during the tests resulted in an increase in the temperature of BB. There were statistically significant correlations between temperature and EMG parameters for most subjects. Results of the study suggest that IR thermography can be an alternative or supplementary method for assessing muscle fatigue at low levels of contraction.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 233-243
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of muscle fibers of breast and leg muscles of grey partridges Perdix perdix
Charakterystyka włókien mięśniowych mięśni piersiowych i nóg kuropatwy polnej Perdix perdix
Autorzy:
Wnuk, A.
Lukasiewicz, M.
Mroczek-Sosnowska, N.
Niemiec, J.
Popczyk, B.
Balcerak, M.
Adamek, D.
Kamaszewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/2826.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
muscle fibre
breast muscle
leg muscle
grey partridge
Perdix perdix
Opis:
Characteristics of muscle fibers of breast and leg muscles of grey partridges Perdix perdix. The experimental material included grey partridges Perdix perdix L. planned for reintroduction into the natural habitat, reared at the Game Breeding Center on the area of Mazovia Province. 10 females and 10 males were selected for slaughter. The birds were slaughtered in poultry abattoir and specimens of their pectoral superficial muscle (pectoralis superfi cialis) and biceps femoris muscle (biceps femoris) were sampled. A greater diameter of fibers was determined for breast muscles. The study did not show any effect of sex on muscle fiber diameter of breast and leg muscles of grey partridges Perdix perdix.
Charakterystyka włókien mięśniowych mięśni piersiowych i nóg kuropatwy polnej Perdix perdix. Materiał badawczy stanowiły kuropatwy polne Perdix perdix L. przeznaczone do wsiedlenia do środowiska naturalnego, odchowywane w Ośrodku Hodowli Zwierzyny na terenie województwa mazowieckiego. Do uboju wybrano po 10 kur i 10 kogutów. Ptaki ubito, a następnie pobrano próbki mięśni piersiowych (pectoralis superfi cialis) oraz mięśni nóg (biceps femoris). Większą średnicą włókien charakteryzowały się mięśnie piersiowe. Nie wykazano wpływu płci na średnicę włókien mięśni piersiowych i mięśni nóg kuropatwy polnej Perdix perdix.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2014, 53
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of rearing system and gender on histological profile of chicken breast and leg muscles in hybrid (CobbxZk)
Wpływ systemu utrzymania oraz płci na profil histologiczny mięśni piersiowych i nóg kurcząt mieszańca CobbxZk
Autorzy:
Wnuk, A.
Mroczek-Sosnowska, N.
Adamek, D.
Kamaszewski, M.
Lukasiewicz, M.
Niemiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/980394.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
rearing system
gender
histological profile
chicken
breast muscle
leg muscle
hybrid
muscle fibre
Opis:
The experiment was conducted on 930 slow-growing chickens from the crossing of a Cobb male and Greenleg Partridge female. The chicks were randomly assigned to two groups: control (BW) which did not have access to a free run and the experimental group (W) using the grassy runs from 4 weeks of age. The experiment showed a statistical effect of sex on breast (P < 0.01) and leg (P < 0.05) muscle fiber diameter in CobbxZk hybrid roosters. There were no significant gender-dependent differences in the surface area of the muscles tested. No effect was either reported of the rearing system on the histological picture of breast and leg muscles.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2013, 52
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure of the masseter muscle (musculus masseter) in cattle
Mikrostruktura mięśnia żwacza (musculus masseter) u bydła
Autorzy:
Bogucka, J.
Bogucki, M.
Frymarski, M.
Powiązania:
https://bibliotekanauki.pl/articles/82784.pdf
Data publikacji:
2015
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
microstructure
masseter muscle
muscle fibre
slaughter cattle
cattle
Źródło:
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica; 2015, 36
2081-1284
Pojawia się w:
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hyperglycemia induced C2C12 myoblast cell cycle arrest and skeletal muscle atrophy by modulating sirtuins gene expression in rats
Autorzy:
Surinlert, P.
Thitiphatphuvanon, T.
Khimmaktong, W.
Pholpramool, C.
Tipbunjong, C.
Powiązania:
https://bibliotekanauki.pl/articles/2087134.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
diabetic mellitus
hyperglycemia
muscle atrophy
sirtuins
skeletal muscle
Źródło:
Polish Journal of Veterinary Sciences; 2021, 24, 4; 563-572
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Histopathological changes of the pectoral muscle in pheasants (Phasinus colchicus; Phasinus c. mongolicus)
Zmiany histopatologiczne w mięśniu piersiowym powierzchniowym bażantów ( Phasinus colchicus ; Phasinus c. Mongolicus)
Autorzy:
Walasik, K.
Lyszczarz, A.
Bogucka, J.
Kuzniacka, J.
Stadnicka, K.
Boguslawska-Tryk, M.
Oler, A.
Powiązania:
https://bibliotekanauki.pl/articles/961526.pdf
Data publikacji:
2017
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
breast muscle
changes of muscle structure
pheasants
Opis:
The aim of investigation was the frequency of histopathological changes of the m. pectoralis superficialis of game and Mongolian pheasants of different ages. The samples for analyze from pectoral muscle were taken after bird slaughter immediately at 12, 16 and 20 weeks of age. Then with from the samples made the histological slides and stained with H + E coloring method to visualize of the muscle tissue structure. The muscle structure analysis was conducted per area 1.5 mm2 with the following histopathological changes: atrophy, shape changes, giant fibers, necrosis, hyaline degeneration, splitting, connective tissue hypertrophy and inflammatory. There was a small frequency of histopathological changes in both pheasant varieties. The most histopathological changes ware observed atrophy and changes of fiber shape. Other changes were sporadic. The connective tissue hypertrophy and inflammatory infiltration were not observed in any individuals. Mongolian pheasants found slightly higher frequency of histopathological changes, but these differences were not statistically significant. Considering the above facts, it can be stated that m. pectoralis superficialis both varieties of pheasants because of the small number of histopathological changes observed in their structure and their nutritional value are valuable raw materials for the high-quality food production.
Źródło:
Acta Scientiarum Polonorum. Zootechnica; 2017, 16, 4
1644-0714
Pojawia się w:
Acta Scientiarum Polonorum. Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Could changes in the ultrasound image of the muscles of the lateral abdominal wall be seen as a sign of muscle activity? A narrative review
Autorzy:
Linek, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/454854.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
ultrasonography
electromyography
lateral abdominal wall
muscle activity
muscle morphology
Opis:
Aim. Currently, ultrasonography (USG) is used to study changes occurring in the lateral abdominal wall muscles (LAM). Here, the question that naturally arises is whether a change in the thickness of the ultrasound image can be identified with a change in muscle activity. Therefore, the purpose of the present work is to: 1) undertake an analysis of available publications exploring the relationship between electromyography (EMG) and USG; 2) define the USG measurement of each LAM; 3) identify gaps in the literature. Material and methods. The databases MEDLINE, POL-index and Google Scholar were used to search the literature. We used a combination of terms (in Polish and English) containing the abbreviated and full names of the following expressions: ultrasound, electromyography and external oblique muscle, internal oblique muscle, or transverse abdominal muscle. Results. Nine publications fulfilled the conditions for inclusion in the analysis. These used different methodologies and test conditions, making it difficult to interpret the results of individual works. The majority demonstrated poor or no correlation between EMG and USG measurements. Conclusion. Changes in the thickness of the LAM using USG should not be equated with a change in muscle activity. To avoid misinterpretation, one should avoid the term “muscle activity” in evaluating changes in the thickness of the LAM. It is recommended that the terms “thickness change” or “morphological change” be used in the assessment of this phenomenon, which is closely related to real changes in USG imaging, expressing a more complex phenomenon than a mere change in bioelectrical potential.
Źródło:
European Journal of Clinical and Experimental Medicine; 2017, 1; 59-65
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The relationship between masticatory muscles activity and tinnitus – preliminary study
Autorzy:
Zieliński, Grzegorz
Suwała, Marta
Ginszt, Michał
Powiązania:
https://bibliotekanauki.pl/articles/552842.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych
Tematy:
tinnitus
temporomandibular joint disorder
masseter muscle
temporal muscle electromyography.
Opis:
Background. Structures of temporomandibular joints and ear have a common phylogenetic origin. Muscular imbalance in the area of masticatory muscles may lead to tinnitus. Objectives. A comparison of muscular tension and masticatory muscles asymmetry between women with tinnitus and without tinnitus. Material and methods. From a group of 96 examined responders, we found 32 women (aged 22 ± 2 years) who exhibited no temporomandibular joint disorders and who had not been treated otolaryngologically. The examined women were then placed within two groups: with tinnitus (16 people) and without tinnitus (16 people). Next, we examined the muscular activity in the temporomandibular muscles by way of sEMG at rest, when the teeth were clenched and when the mouth is opened maximally. To assess muscular asymmetry, the asymmetry index was used. Results. Despite the lower bioelectrical muscular tension of masticatory muscles at rest and during the examined functions in people with tinnitus, the results were not important statistically (p > 0.05). However, we observed crucial statistical differences in masseter muscle asymmetry in people with tinnitus when clenching teeth (p = 0.042), and in the number of people with muscle asymmetry in the area of the masticatory muscles at rest (p = 0.012) and when teeth are clenched (p = 0.013), in comparison to a healthy group. Conclusions. There is a relationship between changes in the asymmetry index of the masticatory muscles and the occurrence of tinnitus. In order to confirm the results, we recommend further examination in this area and longer observation time.
Źródło:
Family Medicine & Primary Care Review; 2019, 1; 66-69
1734-3402
Pojawia się w:
Family Medicine & Primary Care Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanism of inhibition of smooth muscle of guinea-pig taenia coli by chloramphenicol
Autorzy:
Pramanik, P
Datta, S.C.
Mitra, C.
Powiązania:
https://bibliotekanauki.pl/articles/69217.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
muscle
taenia coli
smooth muscle inhibition
guinea pig
chloramphenicol
Źródło:
Journal of Physiology and Pharmacology; 1994, 45, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the dose-response for electrostimulation with Aussie current in the core strength
Autorzy:
Lopes, Andressa Bonito
Amboni, Dhebora Espindola
Schmide, Marilis Macedo
Junges Maciel, Miriélly
de Carvalho, Alberito Rodrigo
Bertolini, Gladson Ricardo Flor
Powiązania:
https://bibliotekanauki.pl/articles/2037502.pdf
Data publikacji:
2020-06-30
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
muscle strength
paraspinal muscle
spine
stabilization
transcutaneous electric nerve
stimulation
Opis:
Introduction. Muscle strengthening to improve joint stability is widely used in the rehabilitation process, and the use of neuromuscular electrical stimulation is a useful tool, but the use of Aussie current still has little documentation about its effectiveness. Aim. To verify if there is a dose-response effect to Aussie current, both in the strength and in the static and dynamic stability of the deep pelvic lumbar muscles. Material and methods. 39 volunteers divided into four groups, one control and three electrostimulation with intensity variation, one with intensity at the contraction threshold (GT), another with intensity maintained at 20% more (G20), and another with intensity maintained at 30% more (G30) than the intensity at the contraction threshold. The intervention lasted four weeks, with three weekly sessions lasting 15 minutes. Initially and after the intervention period, the strength and stability of the deep muscles of the pelvic lumbar region were measured in a static and dynamic manner by a biofeedback pressure unit. Results. There was a significant increase of pressure under the lordoses in the pre- and post-evaluation moments, there were no differences in the evaluation of indirect force (dynamic stability), but there was an increase in the time for GT. The effect sizes presented advantages for the electrostimulated groups in static stability. Conclusion. The doses used did not promote significant statistical differences, but the effects were positive for the electrostimulated groups, especially with respect to static stability.
Źródło:
European Journal of Clinical and Experimental Medicine; 2020, 2; 81-87
2544-2406
2544-1361
Pojawia się w:
European Journal of Clinical and Experimental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Histological profile of breast and leg muscles of Silkies chickens and of slow-growing Hubbard JA 957 broiler
Profil histologiczny mięśni piersiowych i nóg kurcząt Jedwabistych oraz wolno rosnących Hubbard JA 957
Autorzy:
Lukasiewicz, M.
Mroczek-Sosnowska, N.
Wnuk, A.
Kamaszewski, M.
Adamek, D.
Tarasewicz, L.
Zuffa, P.
Niemiec, J.
Powiązania:
https://bibliotekanauki.pl/articles/2841.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
histology
breast muscle
leg muscle
Silkies breed
chicken
slow-growing chicken
Hubbard chicken
broiler
muscle fibre
morphometry
Opis:
The experiment was conducted with 60 slow-growing Hubbard JA 957 broilers and with 60 Silkies chickens reared until the 63rd day of life, in three replications, 20 birds each, in a closed building on litter. A three-stage feeding program was applied in the rearing period. Feed mixtures used in the experiment did not differ in contents of nutrients. In the first stage of rearing (till 21 days of life) the chickens were fed a standard starter feed mixture containing: 20.98% of total protein, 2,845 kcal/kg of me-tabolizable energy, 1.17% of lysine and 0.98% of met. + cys. In the period from 22 to 56 days of life they were receiving a grower type mixture containing: 20.0% of total protein, 2,900 kcal/kg of energy, 1.04% of lysine and 0.88% of met. + + cys., whereas contents of these components in the finisher type mixture administered till the end of the rearing period were as follows: 18% of protein, 2,965 kcal/kg of EM, 0.90% of lysine and 0.78% of met. + cys. On day 63 of rearing, 12 cockerels and 12 hens were selected random from each group. The birds were slaughtered in a poultry slaughter house, and specimens of their major breast muscle (m. pectoralis superficialis) and thigh muscle (biceps femoris) were sampled for analyses. The breast and leg muscles of the birds were characterized by diversified diameters of muscle fibers depending on bird genotype. The greatest diameters were found in breast and leg muscles of the slow-growing Hubbard JA 957 broilers, which was confirmed statistically (P < 0.01). It was also demonstrated that the mean diameter of muscle fibers of Silkies chickens was more than two times smaller compared to the Hubbard JA 957 chickens.
Profil histologiczny mięśni piersiowych i nóg kurcząt Jedwabistych oraz wolno rosnących Hubbard JA 957. Badanie przeprowa- dzono na 60 brojlerach wolno rosnących Hubbard JA 957 oraz 60 kurczętach Jedwabistych odchowywanych do 63. dnia życia, w trzech powtórzeniach po 20 szt., w zamkniętym budynku na ściółce. W okresie odchowu zastosowano trzyfazowy program żywienia. Mieszanki użyte w doświadczeniu nie różniły się pod względem zawartości składników pokarmowych. Kurczęta w pierwszym okresie odchowu do 21. dnia życia żywiono standardową mieszanką typu starter: 0 zawartości 20,98% białka ogólnego, 2845 kcal na kg energii metabolicznej, 1,17% lizyny i 0,98% met. + cys. W okresie od 22. do 56. dnia stosowano mieszankę typu grower, zawierającą 20,0% białka ogólnego, 2900 kcal na kg energii metabolicznej (EM), 1,04% lizyny i 0,88% met. + cys. Zawartość wcześniej wymienionych składników w mieszance fmiszer, stosowanej do końca odchowu, wynosiła odpowiednio: 18% białka, 2965 kcal na kg EM, 0,90% lizyny i 0,78% met. + cys. W 63. dniu odchowu wybrano z każdej grupy po 12 kogutów i 12 kur o masie ciała zbliżonej do średniej w grupie. Kurczęta ubito w ubojni drobiu i pobrano wycinki mięśnia piersiowego powierzchniowego (m. pectoralis supetficialis) oraz dwugłowego uda (biceps femoris). Mięśnie piersiowe i nóg ptaków doświadczalnych charakteryzowała zróżnicowana średnica włókien mięśniowych w zależności od genotypu. Największą średnicą charakteryzowały się mięśnie piersiowe 1 nóg ptaków wolno rosnących Hubbard JA 957, co zostało potwierdzone statystycznie (P < 0,01). Stwierdzono, że średnica włókien mięśniowych kurcząt Jedwabistych była o ponad połowę mniejsza w porównaniu do kurcząt Hubbard JA 957.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science; 2013, 52
1898-8830
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Animal Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanisms underlying the regulation of motor unit contraction in the skeletal muscle
Autorzy:
Celichowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/69858.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
muscle fibre
motor unit contraction
motoneuron
regulation
tension regulation
skeletal muscle
Źródło:
Journal of Physiology and Pharmacology; 2000, 51, 1
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physiological background of the change point in VO2 and the slow component of oxygen uptake kinetics
Autorzy:
Zoladz, J.A.
Korzeniewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/69946.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
muscle fatigue
acid-base status
kinetics
exercise
respiratory muscle
oxygen uptake
Źródło:
Journal of Physiology and Pharmacology; 2001, 52, 2
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Excitation-contraction coupling in cardiac muscle revisited
Autorzy:
Lewartowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/71004.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
cardiac muscle
calcium
sarcoplasmic reticulum
excitation-contraction coupling
cardiomyocyte
skeletal muscle
Źródło:
Journal of Physiology and Pharmacology; 2000, 51, 3
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shoulder girdle muscle activity and fatigue in traditional and improved design carpet weaving workstations
Autorzy:
Allahyari, Teimour
Mortazavi, Narges
Khalkhali, Hamid Reza
Sanjari, Mohammad Ali
Powiązania:
https://bibliotekanauki.pl/articles/2177075.pdf
Data publikacji:
2015-10-21
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
muscle activity
surface electromyography
muscle fatigue
carpet weaving
workstation
perceived fatigue
Opis:
Objectives Work-related musculoskeletal disorders in the neck and shoulder regions are common among carpet weavers. Working for prolonged hours in a static and awkward posture could result in an increased muscle activity and may lead to musculoskeletal disorders. Ergonomic workstation improvements can reduce muscle fatigue and the risk of musculoskeletal disorders. Material and Methods The aim of this study is to assess and to compare upper trapezius and middle deltoid muscle activity in 2 traditional and improved design carpet weaving workstations. These 2 workstations were simulated in a laboratory and 12 women carpet weavers worked for 3 h. Electromyography (EMG) signals were recorded during work in bilateral upper trapezius and bilateral middle deltoid. The root mean square (RMS) and median frequency (MF) values were calculated and used to assess muscle load and fatigue. Repeated measure ANOVA was performed to assess the effect of independent variables on muscular activity and fatigue. The participants were asked to report shoulder region fatigue on the Borg’s Category-Ratio scale (Borg CR-10). Results Root mean square values in workstation A are significantly higher than in workstation B. Furthermore, EMG amplitude was higher in bilateral trapezius than in bilateral deltoid. However, muscle fatigue was not observed in any of the workstations. Conclusions The results of the study revealed that muscle load in a traditional workstation was high, but fatigue was not observed. Further studies investigating other muscles involved in carpet weaving tasks are recommended.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2016, 29, 2; 345-354
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE USE OF NEW TECHNOLOGIES IN DIAGNOSING ASYMMETRY IN MUSCLE ACTIVITY AND MOTOR CONTROL ACTIVITIES BASED ON THE EXAMPLE OF YOUNG HURDLERS
Autorzy:
Konieczny, Mariusz
Iskra, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/449170.pdf
Data publikacji:
2016
Wydawca:
Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii
Tematy:
diagnosing
activity muscle
Opis:
Modern technology has created new possibilities for research in the area of regulation and control of movement. The asymmetry of muscle activity and its somatic and functional effects are rarely diagnosed in physical education and the sports activities of children and young people. The authors of this article analyse the problem of asymmetry on the basis of a representative sample of young hurdlers. Hurdling technique used in 400-m hurdles involves, among others, the necessity of clearing the hurdles with the left and right attacking leg. Differences between the two variants are mainly demonstrated based on analysis of kinematic movement structure focusing on movement of lower limbs. In this paper, the authors present differences in upper limb movement at the moment of clearing the hurdle in different forms of training. The application of EMG (electromyography) with image sequence visualisation and registration system was used to analyse the 400 m hurdling technique of eight hurdlers. The hurdlers were firstclass and champion-class hurdlers. The electromyograms concerned the work of 5 muscles of the upper limbs, symmetrically on both sides of the body (deltoideus, pectoralis major, biceps brachii, triceps brachii, latissimus dorsi). The analysis concerned three forms of hurdle training related to hurdle clearance first with the right and next with the left leg in three intensities: marching, trotting, and running at maximum speed. Muscle work on the right side of the body was analysed when clearing the hurdle with the left lower limb, and vice versa. All examined hurdlers used the left attacking leg better (regarding the specificity of 400-m hurdling). The analysis showed significant differences (p ≥ 0.05) in muscle work of the upper limbs between the right and left side of the body in respective forms of hurdle training. The right upper extremity muscle activity of three repetitions showed high correlation (r=0.89) for each performed movement form. Such relationships were not found on the left side of the body when attacking the hurdle with the right leg. Although asymmetry is inevitable in the process of lateralization of the human body, teachers at the primary stage of education should make every effort to alleviate disorders of muscle activity and dysfunction of the skeletal system. This is particularly significant in the disciplines in which it is possible to use symmetrical exercises, as a stimulus for relaxation and to avoid monotony when training children and adolescents.
Źródło:
Journal of Physical Education & Health - Social Perspective; 2016, 5, 8; 49-56
2084-7971
Pojawia się w:
Journal of Physical Education & Health - Social Perspective
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of the mechanomyographic signal of three different muscles and at different levels of isometric contractions
Autorzy:
Jotta, B.
Garcia, M. A. C.
Pino, A. V.
Souza, M. N. de
Powiązania:
https://bibliotekanauki.pl/articles/306272.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mechanomiografia
sygnał MMG
mięśnie
siła mięśni
mechanomyography
MMG signal
muscle twitch
muscle activation pattern
muscle force
Opis:
Purpose: Lateral (X) and longitudinal (Y) mechanical oscillations of muscle fibers that take place during muscular contraction seem to contain information additionally to the myoelectric activity, which can contribute to the interpretation of some muscle gradation force mechanisms. However, no previous study was found that had investigated the relationship between the muscle force and features associated to the mechanomyographic (MMG) signal obtained by means of a biaxial accelerometer in three different muscles. Therefore, the aim of this study was to evaluate the relationship between the force output at different load levels (20% to 100%) of the maximum voluntary isometric contraction (%MVIC) and the two signals supplied by a biaxial accelerometer and, in addition, the so-called resultant (R) acceleration signal derived from the two signals mentioned previously. Twenty seven male volunteers participated in this study. Methods: The force output related to the right biceps brachii, soleus and gastrocnemius medialis muscles was studied by means of linear regression models fit to log-transformed of the root mean square (RMS) values of the MMG signals in X, Y, and R axes versus each %MVIC. The phase angle of R acceleration (PhaseR) and anthropometric data were also considered. Results: The angular coefficient a and the antilog of y-intercept b from the log-transformed of MMG data values versus force output were able to distinguish partially motor unit strategies during isometric contractions in the three muscles studied. Conclusion: The findings suggest that biaxial accelerometer seems to be an interesting approach in the assessment of muscle contraction properties.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 4; 73-84
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Muscle torque of healthy individuals and individuals with spastic hemiparesis after passive static streching
Autorzy:
Freitas, S. T. T.
Abreu, E. M. C.
Reis, M. C.
Cunha, B. S.
Prianti, T. S. M.
Lima, F. P.
Lima, M. O.
Powiązania:
https://bibliotekanauki.pl/articles/306898.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mięśnie
siła mięśni
rozciąganie
muscle hypertonia
muscle strength
passive stretching
Opis:
Spasticity is one of the main causes of contracture, muscle weakness and subsequent functional incapacity. The passive static stretching can be included as having the purpose of increasing musculoskeletal flexibility, however, it also can influence the muscle torque. The objective is to verify the immediate effect of passive static stretching in the muscle strength of healthy and those who present spastic hemiparesis. There were assessed 20 subjects, 10 spastic hemiparetic (EG) and 10 healthy individuals (CG), including both sexes, aged between 22 and 78 years. The torque of extensor muscles of the knee was analyzed using isokinetic dynamometer. Results have shown that EG has less muscle torque compared to CG ( p < 0.01). In addition, EG presented a decrease in significance of muscle torque after stretching ( p < 0.05), however, it has not shown significant alteration in muscle torque of CG after performing the program that was prescribed. Immediately after the passive stretch, a significant torque decrease can be seen in hypertonic muscle; it is believed that this reduction may be associated with the physiological overlap between actin and myosin filaments and so preventing the muscle to develop a maximum contraction.
Źródło:
Acta of Bioengineering and Biomechanics; 2016, 18, 1; 35-39
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cellular inflammatory reactions of the muscle tissue in murine trichinellosis
Autorzy:
Gabryel, P
Gustowska, L.
Powiązania:
https://bibliotekanauki.pl/articles/836913.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
trichinellosis
murine trichinellosis
muscle cell
larva
Trichinella spiralis
muscle tissue
Źródło:
Annals of Parasitology; 1997, 43, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of addition of Ca, Cu, Fe, Zn and lactic acid to drinking water on content of these elements in muscles of slaughter turkeys
Wplyw dodatku Ca, Cu, Fe i Zn oraz kwasu mlekowego do wody pitnej na zawartosc tych pierwaistkow w miesniach indorow rzeznych
Autorzy:
Makarski, B
Makarska, E.
Powiązania:
https://bibliotekanauki.pl/articles/14165.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
element addition
calcium
copper
iron
zinc
lactic acid
drinking water
element content
muscle
slaughter animal
turkey
breast muscle
leg muscle
Opis:
The study was conducted on 300 turkey cocks type BUT-9, grown under optimal conditions for this kind of poultry. The feed was a typical commercial full-dose mix for turkeys. The birds were divided into 5 experimental groups. From the 3rd week of their life, they were given preparations with their drinking water. Group I was the control group, while drinking water for the test groups was enriched as follows: lactic acid (0.4%) for group II, CuSO4 in the amount of 30 mg Cu·dm-3 H2O for group III, CuSO4 (30 mg Cu-dm-3) and 0.4% of lactic acid for group IV and CuSO4 in the amount of 50 mg Cu·dm-3 for group V. Application of the preparations was terminated after 3 days, when symptoms of poisoning were observed in turkey cocks of groups II and IV, alongside increased mortality rate. Samples of drinking water were taken for analyses, and from each group 10 birds were selected for slaughter to take tissue samples (breast and leg muscles). The objective of the experiments was to determine the concentration of Ca, Mg, Zn, Cu and Fe in the consumable tissues of turkey cocks. The study showed that the highest rate of mortality of turkey cocks was observed in the group that was given lactic acid with their drinking water, and these turkeys had increased levels of Ca, Cu, Zn and Fe. In none of the groups, the content of Zn in the breast muscle exceeded 20 mg kg-1, while the concentration of copper in all experimental groups (except the control) was above the level of 10 mg kg-1. Increased doses of copper caused an increase in the concentration of magnesium in the leg muscles, while a combination of copper supplementation with lactic acid resulted in increased accumulation of Cu in both the breast and leg muscles.
Badania przeprowadzono na 300 indorach typu BUT-9, odchowywanych w optymalnych warunkach przewidzianych dla tego typu ptaków. Paszą była typowa komercyjna mieszanka pełnoporcjowa dla indyków. Ptaki podzielone na 5 grup doświadczalnych, od 3. tygodnia życia otrzymywały preparaty do wody pitnej. Grupa I była grupą kontrolną, grupa II otrzymywała do picia wodę z kwasem mlekowym (0,4%), grupa III otrzymywała do wody pitnej dodatek CuSO4 w ilości 30 mg Cu·dm-3 H2O, grupa IV — dodatek CuSO4 (30 mg Cu-dm-3) i 0,4% kwasu mlekowego, grupa V — dodatek CuSO4 w ilości 50 mg Cu·dm—3. Podawanie preparatów zakończono po 3 dniach, ponieważ w grupach II i IV zaobserwowano u ptaków objawy zatrucia i zwiększoną liczbę padnięć. Pobrano próbki wody pitnej do analiz oraz wybrano z każdej grupy po 10 ptaków do uboju, w celu pobrania prób z tkanek (mięsień piersiowy i mięsień udowy). Celem badań było określenie kumulacji Ca, Mg, Zn, Cu i Fe w tkankach konsumpcyjnych indorów. W badaniach stwierdzono, że najwięcej padnięć indorów zaobserwowano w grupie otrzymującej dodatek kwasu mlekowego do wody pitnej, w której stwierdzono zwiększone ilości Ca, Cu, Zn i Fe. W mięśniu piersiowym indorów ze wszystkich grup zawartość Zn nie przekraczała 20 mg kg-1, natomiast kumulacja miedzi we wszystkich grupach doświadczalnych, oprócz kontrolnej, przekraczała 10 mg kg-1. Zwiększone dawki miedzi wpłynęły na podwyższenie koncentracji magnezu w mięśniu udowym, a suplementacja miedzi z kwasem mlekowym spowodowała wzrost kumulacji Cu w mięśniach piersiowym i udowym.
Źródło:
Journal of Elementology; 2010, 15, 1; 119-129
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Science and practice of core stability and strength testing
Autorzy:
Zemková, Erika
Powiązania:
https://bibliotekanauki.pl/articles/1923682.pdf
Data publikacji:
2018-09-19
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
core muscle tests
lifting task
muscle power
torsional tests
trunk rotations
Opis:
This study deals with a gap between science and practice in the testing of core stability and strength and presents our approach to solving this issue. Typical core stability tests require the subject to maintain a neutral spinal posture while under load in a quadrupedal or supine position and assess the endurance of global core muscles. However, most of these non-dynamometric tests have been developed for use in clinical and research settings. A suitable alternative represents torsional tests performed under stable or unstable conditions and instrumented tests in the form of trunk repositioning and load release tasks. Core strength is measured in terms of how much weight can be lifted, how many repetitions can be performed, or how long a neutral stable position can be maintained. In the laboratory, isometric and isokinetic dynamometers are frequently used. Isometric strength measurements are usually recommended as a standard for lifting tasks. However, such measurements underestimate the loads on the spine during dynamic movement. A deadlift to high pull exercise that involves working major muscle groups in the upper and lower body may best simulate the demands of jobs comprising of lifting tasks. Furthermore, isokinetic loading does not occur in daily human activities and is not specific to the requirements of sports. Given that rotational power is a better predictor of athlete performance, the test adapted from the wood chop exercise on a weight stack machine may provide conditions imposed by sports. One can also use a system that allows evaluation of muscle power during seated or standing trunk rotations with a barbell placed on the shoulders. These tests utilizing portable diagnostic systems may be implemented in functional diagnostics for athletes and sedentary or manual workers whose activities involve lifting tasks or trunk rotations under unloading or loading conditions; so complementing existing testing methods.
Źródło:
Physical Activity Review; 2018, 6; 181-193
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Glutathione-S-transferase activity in mouse muscle during experital trichinellosis
Autorzy:
Derda, M.
Wandurska-Nowak, E.
Boczoń, K.
Powiązania:
https://bibliotekanauki.pl/articles/2147897.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
glutathione s-transferase
infection
muscle
mouse
Trichinella
mice
trichinellosis
host
skeletal muscle
Opis:
The role of glutathione-S-transferase (GST, EC 2.5.1.18) in biochemical host defence in experimental trichinellosis was evaluated. The activity of GST in mouse skeletal muscles was measured during the muscular phase of trichinellosis, starting from the 3rd week post infection (w.p.i.) to the 11th w.p.i. Activity was determined spectrophotometrically by monitoring the formation of thioether (S-2,4-dinitrophenylglutathione) from the reduced form of glutathione and 1-chloro-2,4-dinitrobenzene used as a substrate and as an example of xenobiotics. The changes in the activity of GST were as follows: an increase in activity starts in the 4th w.p.i., peaks (up to 310% of the normal value) in the 6th w.p.i., decreases in the 8th week and a final, weak rise was observed in week 11. The statistically significant changes in GST activity in this phase of experimental trichinellosis suggest that this enzyme participates in the biochemical defence of the host against Trichinella infection.
Źródło:
Wiadomości Parazytologiczne; 2001, 47, 2; 227-232
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poziom sprawności fizycznej a wybrane elementy składu ciała uczestników uniwersytetu III wieku
Activity level and selected body components of third-century university participants
Autorzy:
Nowosielska–Swadźba, Danuta
Zwolińska, Danuta
Kunicki, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1181216.pdf
Data publikacji:
2020
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Raciborzu
Tematy:
elderly
physical fitness
skeletal muscle mass (MS)
skeletal muscle
mass index (SMI)
sarcopenia
Opis:
Objective of the work: Assessment of physical fitness of participants of the University of the Third Age in Racibórz on the basis of selected Senior Fitness Test samples. Test person and the methods: 15 participants were recruited for the study, including 11 women and 4 men students of the University of the Third Age. Get the results of the service quality assessment using selected samples from the Fullerton test and proposed body features. The average age of surveyed users is 69 years, the youngest participant was 63 years, the oldest 79 years. Results: 1. Among the respondents, there were people with sarcopenia features. 2. There was no correlation between sarcopenia and physical fitness. 3. The lack of a relationship between MS (skeletal muscle mass) and SMI (skeletal muscle mass index) and endurance and strength of lower limbs may suggest that factors other than skeletal muscle mass may be associated with a decrease in physical fitness in the elderly.
Źródło:
Eunomia – Rozwój Zrównoważony – Sustainable Development; 2020, 1(98); 105-116
1897-2349
2657-5760
Pojawia się w:
Eunomia – Rozwój Zrównoważony – Sustainable Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 333

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