Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

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


Wyświetlanie 1-3 z 3
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:
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
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies