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Wyszukujesz frazę "Iwańska, D." wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
The sense of position and movement in the knee joint during voluntary movements
Autorzy:
Iwańska, D.
Urbanik, C.
Powiązania:
https://bibliotekanauki.pl/articles/306338.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
proprioreceptors
sense position
voluntary movements
staw kolanowy
dynamika
Opis:
The aim of the paper was to assess body position reproduction as well as jump height during an intended movement, together with an assessment of the influence of factors that disturb this process. Factors disturbing the jump were related to with the reproduction of different knee joint angles (90° or 120°); different muscle activity in performed jumps: SJ with no countermovement and CMJ with countermovement; as well as with and without visual (VC) of control movement (nVC) – eyes covered. Nineteen subjects aged twenty-one years participated in the experiment. Jump height (h) was calculated on the basis of a reaction force (R) of the base, as registered with a tensometric platform. Two-dimensional cinematographic analysis was used to assess the reproduction of angular position in the knee joint. A significant factor determining the level of position reproduction during voluntary movements was the imposed angle as well as the character of muscle activity. The biggest difficulty of developing maximum heights occurred during jumps with disturbed visual control (eyes shut).
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 3; 11-17
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomechanics of figure skating jump double axel performed in on ice and off ice conditions
Biomechanika skoku łyżwiarskiego podwójny axel wykonywanego w warunkach naturalnych i symulacyjnych
Autorzy:
Mazurkiewicz, A.
Iwańska, D.
Powiązania:
https://bibliotekanauki.pl/articles/956592.pdf
Data publikacji:
2015
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
figure skating
Axel
Axel Paulsen
off-ice
on-ice
jump
biomechanics
jazda figurowa na łyżwach
skok
biomechanika
Opis:
Figure skating is considered a highly technical discipline. Coaches and researchers are constantly looking for the most effective and safest movement model for jumps, especially Axel Paulsen, which is the hardest kind of all jumps. This research was taken to verify the usefulness of performing double Axel under off- ice conditions as a part of general figure skating training. Research was based on video analysis made in APAS 2000 programme. Parameters taken into account were: joints and take off angle, displacement of centre body mass, horizontal and vertical velocity. Results helped in finding out parameters which are trained during off-ice session.
Źródło:
Aktualne Problemy Biomechaniki; 2015, 9; 83-88
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Symmetry of proprioceptive sense in female soccer players
Autorzy:
Iwańska, D.
Karczewska, M.
Madej, A.
Urbanik, Cz.
Powiązania:
https://bibliotekanauki.pl/articles/306363.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
propriocepcja
symetria
kobieta
piłkarze nożni
proprioception
symmetry
female
soccer players
Opis:
Purpose: The purpose of the study was to assess the symmetry of proprioceptive sense among female soccer players when trying to reproduce isometric knee extensions (right and left) and to analyze the impact of a given level of muscle force on proprioception. Methods: The study involved 12 soccer players aged 19.5 ± 2.65 years. Soccer players performed a control measurement of a maximum 3s (knee at the 90°) position in the joint. Subsequently, 70%, 50%, and 30% of the maximum voluntary contraction (MVC) were all calculated and then reproduced by each subject with feedback. Next, the players reproduced the predefined muscle contraction values in three sequences: A – 50%, 70%, 30%; B – 50%, 30%, 70%; C – 70%, 30%, 50% of MVC without visual control. Results: In every sequence, the participants found obtaining the value of 30% of MVC the most difficult. The value they reproduced most accurately was 70% of MVC. Both trial II and trial III demonstrated that the symmetry index SI significantly differed from values considered acceptable (SIRa). In each successive sequence the largest asymmetry occurred while reproducing the lowest values of MVC (30%) (p < 0.05). Conclusion: High level of prioprioceptive sense is important to soccer players due to the extensive overload associated with dynamics stops or changes in direction while running. Special attention should be paid to develop skills in sensing force of varying levels. It was much harder to reproduce the predefined values if there was no feedback.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 2; 155-163
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the effectiveness of training on a machine with a variable-cam
Autorzy:
Urbanik, C.
Staniszewski, M.
Mastalerz, A.
Karczewska, M.
Lutosławska, G.
Iwańska, D.
Madej, A.
Ostrowska, E.
Gwarek, L.
Tkaczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/307428.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
resistance training
elbow flexors
variable-cam
creatine kinase
trening
łokieć
mięśnie
kreatyna
kinaza
Opis:
The aim of the study was to assess the effectiveness of the training of elbow flexors through the use of 2 machines, one of which was equipped with a disc plate of constant radius, the other one with a variable-cam having a radius adjustable to muscle strength. The experiment included 45 men divided into 3 equal groups: training group A (variable-cam), training group B (circle), and control group C. The training lasted for 8 weeks, 3 times a week. In order to control the effects, the values of peak torque and power of the flexor muscles of the elbow were isokinetically measured for the angular velocities of 30°/s and 60°/s. Also taken were anthropometric measurements of the arm and the creatine kinase (CK) activity in the blood plasma. As a result of the training, significant increases of biomechanical values were noted only in group A: power increased over 20%, the peak torque over 14%. After the training, significant increases of arm circumference in the relaxed position were noted in group A (17 mm), as well as in group B (11 mm). Also, some changes in CK activity were observed between Monday and Friday in a training week. On the basis of the experimental measurements, it may be ascertained that training elbow flexor muscles on a machine with a variable-cam is more efficient for increases in strength and power, as well as for some anthropometric parameters, than training on a machine with a disc plate.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 4; 93-102
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic conditions affecting fruit consumption in Poland: evidence from a country with two economic systems in 1965-2014
Autorzy:
Olewnicki, D.
Iwanska, M.
Laudanski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/43595.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
Polska
food consumption
fruit
economic condition
evidence
economic system
business cycle
1965-2014 period
Źródło:
Journal of Agribusiness and Rural Development; 2018, 49, 3
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ Rovimixu ß karotenu na zawartość ß karotenu i witaminy A w surowicy krwi cieląt
Vlijanie pribavki Rovimiksa (β karotina) na soderzhanie β karotina i vitamina A v syvorotke krovi teljat
Effect of the Rovimix (ß carotene) addition on the ß carotene and vitamin A content in the blood serum of calves
Autorzy:
Iwanska, S.
Lewicki, C.
Falkowska, A.
Strusinska, D.
Rybicka, M.
Powiązania:
https://bibliotekanauki.pl/articles/808621.pdf
Data publikacji:
1988
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Opis:
Результаты соответствующих исследований показали, что прибавка к корму телят начиная с 7-дневного возраста синтетического β каротина (препарата Ровимикс) в дозах колеблющихся в пределах 50-250 мг на голову в сутки приводит к существенному повышению содержания β каротина и витамина А в сыворотке крови. Интенсивное потребление β каротина из препарата Ровимикс, а также динамика преобразования β каротина в витамин А были обнаружены у телят урожденных коровами, которым в течение 14 дней до отела прибавляли к ежедневному рациону 60 мг синтетического β каротина на 100 кг корма. Повышение содержания церулоплазмина в сыворотке крови телят с повышенным уровнем β карoтина и витамина А позволяет предполагать существование взаимосвязи между указанными компонентами. Установленная взаимозависимость резервов β каротина у матери и количества витамина А накопленного теленком в эмбриональный период, а также содержания β каротина и витамина А в сыворотке крови телят после рождения позволяет заключать, что прибавка к ежедневному рациону коров соответствующих количеств β каротина, или подача 60 мг синтетического каротина на 100 кг корма в течение 14 дней до отела полностью обеспечивает потребность новорожденных телят в β каротине и витамине А.
The respective investigations have proved that the β carotene and vitamin A levels in the blood serum of calves can be significantly increased by addition to the feed of calves since the 7th day of their life of synthetic β carotene (Rovimix) in the amount ranging within 50-250 mg/day/calf. An intensive utilization of β carotene from Rovimix and a high dynamics of the β carotene conversion into vitamin A were found in calves born by cows, which received 14 days before calving an addition of 60 mg/100 kg of synthetic carotene to their rations. An increase of the cerruloplasmin content in the blood serum of calves with increased β carotene and vitamin A level allows to prove a relationship between the above components. The found relationship between β carotene reserves in mother and the vitamin A accumulation by calf in its foetal period on the one hand and the β carotene and vitamin A content in the blood serum of calves after calving on the other proves that the addition of appropriate β carotene amounts to the daily ration of cows or administration of 60 mg/100 kg of synthetic β carotene for 14 days after calving would satisfy to a full extent the requirement of β carotene and vitamin A of newborn calves.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1988, 361
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ dodatku karotenów naturalnych lub syntetycznego beta-karotenu do dawki pokarmowej na zawartość beta-karotenu i witaminy A w osoczu krwi i płodność krów
The effect of natural or synthetic beta-carotene supply in the ration on beta-carotene and vitamin A level in blood plasma and fertility of lactatic cows
Vlijanie pribavki estestvennykh karotinov beta-karotina k racionu na soderzhanie beta-karotina i vitamina A v plazme krovi i plodovitost korov
Autorzy:
Iwanska, S.
Lewicki, C.
Minakowski, D.
Glazer, T.
Markiewicz, E.
Wysocka, Z.
Powiązania:
https://bibliotekanauki.pl/articles/807088.pdf
Data publikacji:
1989
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
karoteny naturalne
syntetyczny beta-karoten
dawki pokarmowe
beta-karoten
witamina A
osocze
krew
plodnosc
krowy
Opis:
The study was carried out on 24 cows and 20 heifers of the black-and-white breed in conditions of commercial production. The animals before calving were assigned randomly to 4 groups. Each group had 2 subgroups of 6 multiparous cows (A) and 5 heifers (B). The control group (I) did not receive any additional carotene or vitamin A. Cows in group II were given additional 300 mg of synthetic β-carotene (Rovimix-Rache) daily during 10 days before and 60 days after the delivery. In group III dried carrots were given in the same period, the rations being equivalent to 300 mg of β-carotene. In group IV vitamin A (1.800.00 i.w) was injected three times (10 days before the delivery, and 7 - 10 and 30 days after the delivery), so as to equlize the addition of β-arotene in groups II and III. Cows of all groups were fed similarly. During winter corn silage (30 kg), pellets (5 kg), sugar beet pulp (0.5 - 3 kg) and a concentrate were used. In summer zero-grazing (grass mixture) was used (60 kg) together with an addition of dried green forage (1 kg). Addition of β-carotene to the ration, both as regards synthetic carotene (Rovomix-Roche) and dried carrots, alleviated carotene and vitamin A deficiency in blood plasma during the first two months after delivery. The effect of vitamin A injections on the level of this vitamin in blood plasma was negligible. Carotene addition to the ratipn affected also the dynamics of β-carotene and vitamin A passing to milk in the first 100 days of lactation. The best indices of fecundity were obtained for cous receiving rations supplemented with synthetic carotene. Influence of β-carotene supply in the ration on fertility of first calving cows (B) has not been clarified. Good results of fertility were found for first calving cous reciving vitamin A injection.
Исследования проведено в условиях промышленной продукции на 24 коровах и 20 высокотелышх тёлках породы чёрно-белой. Животные поделили на 4 группы, которые обнимали 2 подгруппы: А - коровы по 3 - 4 лактациях и В - первотёлки. В I группе (контрольной) применяемый кормовый рацион не был обогащён добавочно каротином. Животные II группы І0 дней перед и 60 дней после отеления получали на голову в корме мг синтетического β-каротина (Ровимикс-Рош). В III группе (в темже периоде) применяли прибавку сухой моркови в количестве эквивалентном 300 мг β-каротина. В ІУ группе сделано 3-кратную инъекцию витамина А (1.800.000 ME), I0 дней перед отелом, 7 - 10 и 30 дней после отела. Коровы во всех группах кормлено одиноково применяя во-время зимового кормления силос с кукурузы (30 кг), брикетный корм (5 кг), сухой жом (0,5 - 3 кг) и концентрат. Во время летнего периода применяли кормление в стойле зелёным кор мом с трав (60 кг) и травянной мукой (1 кг). Применение во время зимового кормления коров прибавки β-каротина в синтетическом или естественном виде повлияло на: - сглаждение недостатка β-каротина в плазме крови в первых 2 месяцах после отёла, - высшую эффективность оплодотворения во-время первой течки после отела. Не доказано стимулирующего влияния Ровимиксу и сухой моркови на исследованные показатели у первотёлок, у которых высшуюэффективность оплодотворения получено применяя инъекцию витамина А.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1989, 360
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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