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Wyszukujesz frazę "Ambroży, T." wg kryterium: Autor


Wyświetlanie 1-8 z 8
Tytuł:
High-frequency video capture and a computer program with frame-by-frame angle determination functionality as tools that support judging in artistic gymnastics
Autorzy:
Omorczyk, J.
Nosiadek, L.
Ambroży, T.
Nosiadek, A.
Powiązania:
https://bibliotekanauki.pl/articles/307530.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
gimnastyka artystyczna
ocena wyników
biomechanika
artistic gymnastics
judging
biomechanics
back handspring
Opis:
Purpose: The main aim of this study was to verify the usefulness of selected simple methods of recording and fast biomechanical analysis performed by judges of artistic gymnastics in assessing a gymnast’s movement technique. Material and methods: The study participants comprised six artistic gymnastics judges, who assessed back handsprings using two methods: a real-time observation method and a frame-by-frame video analysis method. They also determined flexion angles of knee and hip joints using the computer program. Results: In the case of the real-time observation method, the judges gave a total of 5.8 error points with an arithmetic mean of 0.16 points for the flexion of the knee joints. In the high-speed video analysis method, the total amounted to 8.6 error points and the mean value amounted to 0.24 error points. For the excessive flexion of hip joints, the sum of the error values was 2.2 error points and the arithmetic mean was 0.06 error points during real-time observation. The sum obtained using frame-by-frame analysis method equaled 10.8 and the mean equaled 0.30 error points. Conclusions: Error values obtained through the frame-by-frame video analysis of movement technique were higher than those obtained through the real-time observation method. The judges were able to indicate the number of the frame in which the maximal joint flexion occurred with good accuracy. Using the real-time observation method as well as the high-speed video analysis performed without determining the exact angle for assessing movement technique were found to be insufficient tools for improving the quality of judging.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 3; 85-93
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyses of the dynamics of changes between individual men’s events in front crawl during the XIX Olympic Games in Beijing 2008
Autorzy:
Kucia-Czyszczoń, K.
Dybińska, E.
Bieniek, P.
Ambroży, T.
Powiązania:
https://bibliotekanauki.pl/articles/307563.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
swimming performance
strategic solutions
male swimmers
front crawl
pływanie
igrzyska olimpijskie
dynamika zmian
Opis:
The main purpose of this study was to analyze tactical solutions used by swimmers, the finalists of the 19th Beijing Olympics in 2008, in individual front crawl events at distances of 50, 100 and 200 m. Observations were carried out on 7 swimmers, the Beijing Olympics medalists competing in front crawl individual events. Detailed analyses were run on: 1) Sports results obtained by the finalists at distances of 50, 100 and 200 m front crawl; 2) block time; 3) results of each 50 m lap time (100 and 200) called split times except 50 m front crawl (there is no split time in 50 m); and 4) the mean swimming speed (V) on individual laps of the analyzed races. To determine the correlation between the response time, the time of individual laps, and the final time of the analyzed front crawl races, Pearson’s linear correlation coefficient r was obtained. As a result of detailed analyses of the test material it is believed that not only tactics for an individual race is important, but equally significant is to elaborate the strategy for the whole event and to prepare the swimmer to compete in the system of heats, semifinals and finals. However, some of the following tactical objectives can be formulated: sprinters (a distance of 50 and 100 m front crawl) should start at maximum speed, according to their abilities, and try to maintain that speed until the end of the race; middle-distance swimmers (200 m front crawl) should adopt the most optimal tactical solutions characterized by increasing speed in the second half of the distance.
Źródło:
Acta of Bioengineering and Biomechanics; 2014, 16, 1; 19-27
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors determining swimming efficiency observed in less skilled swimmers
Autorzy:
Kucia-Krzysztoń, K.
Dybińska, E.
Ambroży, T.
Chwała, W.
Powiązania:
https://bibliotekanauki.pl/articles/306793.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
training loads
swimming strokes
kinematics
pływalnia
kinematyka
szkolenie
sport
Opis:
The dynamics of performance in professional sport requires a systematic improvement of the training process. Such activities should also include optimizing the children and youth training in these disciplines, where an early specialization operates. The main aim of this paper was to search for the relationship between swimmer’s segmental kinematics (segmental velocities, stroke rate, stroke length, stroke index); the relationship between swimmer’s technical skill level (in four competitive swimming techniques) and training overloads taking into consideration gender and age effect. The study group consisted of 121 swimmers (69 female and 52 male), of the Polish 12–15 age group swim team, volunteered to serve as subjects. Video-based methods and video equipment are being applied to assist qualitative and simple quantitative analysis for immediate feedback and research in swimming. Both technical skill level preparation and segmental kinematics of 12–15 year old swimmers proved to be highly conditioned by implemented training intensity ( p < 0.001), as well as the volume of training (high and average trade at a level of significance p < 0.001). Implemented training overloads expressed by both volume and intensity of training showed high and very high correlation with the swimming efficiency, presented segmental kinematics and technical skill level, however, there appeared particularly pronounced relationship with the size of kinematic parameters taken into account in four competitive swimming techniques, components of the 100 m individual medley.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 4; 115-124
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postural stability in Parkinson’s disease patients
Autorzy:
Wilczyński, J.
Pedrycz, A.
Zieliński, E.
Ambroży, T.
Mucha, D.
Powiązania:
https://bibliotekanauki.pl/articles/306998.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
stabilność posturalna
choroba Parkinsona
test stabilności
postural stability
Parkinson's disease
Postural Stability Test
Opis:
Purpose: The aim of the study was to analyze postural stability in Parkinson's disease patients. A total of 32 subjects were tested, including 26 (81.25%) women and 6 (18.75%) men. These were patients with advanced, idiopathic Parkinson’s disease. The disease duration was over 5 years. Methods: The study was conducted in the Posturology Laboratory at the Department of Medicine and Health Sciences, Jan Kochanowski University in Kielce (Poland). The Biodex Balance System was used for evaluation of postural stability. Postural Stability Testing was performed with both feet positioned on a stable surface with the eyes open. Results: The Overall Stability Index in the whole group was 0.5°. The higher Overall Stability Index in women is indicative of slightly worse postural stability compared to men, although in both groups, it was within norms (Z = 2.0545, p = 0.0399). Anterior-Posterior Overall Stability Index (A/P) was an average of 0.35°. The Medial-Lateral Overall Stability Index (M/L) was an average of 0.27°. Both women and men were observed to have higher postural sway in the sagittal plane than the frontal plane. The vast majority of the subjects maintained in Zone A during testing (99.94%), and was slightly bent backwards to the right and in Quadrant IV (61.53%). Conclusions: Regular control of postural stability in Parkinson's disease patients is significant due to the risk of falls.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 4; 135-141
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
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:
The role of hippotherapeutic exercises with larger support surface in development of balance in boys aged 15 to 17 years with mild intellectual disability
Autorzy:
Ambroży, T.
Mazur-Rylska, A.
Chwała, W.
Ambroży, D.
Mucha, T.
Omorczyk, J.
Ostrowski, A.
Mucha, D.
Powiązania:
https://bibliotekanauki.pl/articles/307283.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
parametry stabilograficzne
równowaga
hipoterapia
niepełnosprawność
stabilographic parameters
balance
hippotherapy
intellectual disability
mild intellectual disability
Opis:
Purpose: Maintaining balance in humans involves continuous changes in parameters. The aim of this study was to assess the effect of hippotherapeutic exercises on development of the sense of balance in boys aged 15 to 17 years with mild intellectual disability. Methods: The study examined 50 randomly chosen boys aged 15 to 17 years with mild intellectual disability from the special education centre in Leżajsk, Poland. The study participants were divided into two groups: experimental group, who participated for 3 months in hippotherapeutic classes and the control group, with boys attending outdoor or indoor physical education classes. Before and after completion of the study, both experimental and control groups were diagnosed by means of Accu SwayPlus force plate. The force plate was used to determine alterations in the position of the centre of pressure (COP) on the platform in the frontal and sagittal planes in relaxed standing position with feet spread to the shoulder width and with eye control with respect to the base of support (BOS). The description was based on mean displacement of the centre of gravity (COG), mean velocity of displacements of the COG, mean radial displacement and total length of the COP pathway. Results: In the experimental group, equestrian exercises induced a series of significant changes that pointed to the improved balance reactions. The character of these changes in the positions analysed was similar: values of body sway in the sagittal plane and their range and mean displacements decreased statistically significantly after training. The same tendency was observed for mean radial displacements in the free open position and with closed support surface. Furthermore, the velocity of displacement and the length of the COP’s projection pathway on the support surface in the free open position was also reduced. All significant changes and trends found for the experimental group, which occurred after 3 month of hippotherapeutic classes, suggest improved parameters of balance. Conclusions: The lack of changes in balance parameters in the control group shows that the hippotherapeutic classes significantly develop balance abilities in boys aged 15 to 17 years with mild intellectual disability.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 4; 143-151
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Brawa dla szefa sztabu!
Autorzy:
Trepka, Stanisław T.
Powiązania:
Polska Zbrojna 1995, nr 190, s. 10
Współwytwórcy:
Ciećkowski, Zbigniew Ambroży (1929- ). Polemika
Data publikacji:
1995
Tematy:
Praca społeczno-wychowawcza w wojsku Polska 1944-1989 r.
Oficerowie oświatowo-wychowawczy Polska 1944-1989 r.
Wychowanie wojskowe
Opis:
Polem.: Mieszane odczucia; Zbigniew Ciećkowski; Polska Zbrojna; 1995; nr 204; s. 10.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Sposoby wykorzystania odnowień brzozy brodawkowatej Betula pendula Roth do przebudowy na obszarach po rozpadzie drzewostanów świerka pospolitego Picea abies (L.) H. Karst. w Beskidzie Śląskim
Ways to use silver birch Betula pendula Roth regeneration in sites considered for stand conversion due to decline of Norway spruce Picea abies (L.) H. Karst. in the Silesian Beskid Mountains
Autorzy:
Ambrozy, S.
Zachara, T.
Kapsa, M.
Chomicz-Zegar, E.
Vytscha, R.
Powiązania:
https://bibliotekanauki.pl/articles/46018.pdf
Data publikacji:
2017
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
drzewostany swierkowe
swierk pospolity
Picea abies
drzewostany pokleskowe
odnowienia lasu
odnowienia naturalne
brzoza brodawkowata
Betula pendula
wykorzystanie
przebudowa drzewostanow
Opis:
One of the tree species appearing after a decline of Norway spruce Picea abies (L.) H. Karst. in the Silesian Beskid Mountains is Silver Birch Betula pendula Roth. Therefore our study was aimed at evaluating this birch regeneration and the dynamics of changes resulting from experimental cutting. Measurements and inventories of trees were conducted on research plots located in a ten-year old birch regeneration site with either no cutting, partial cutting (50%) or clear cutting (100%) of birch. We observed an introduction of biocenotic species (rowan, willow, aspen) as well as the target species (spruce, fir, beech) under the birch canopy. Fir and beech were also planted, because of their slow natural regeneration. The clear cut treatment caused a great number of sprouts growing from birch stumps, reaching a height of about 2 m over 3 years, resulting in competition with the regeneration of other species. Partial cutting did not cause such a drastic amount of sprouting. Furthermore, we found that only the spruce height increment is significantly less under a birch canopy compared to open space. The obtained results indicate a necessity to adjust the density and species composition of regenerating tree species under a birch canopy, avoiding complete removal of the first generation birch cover and the need to moderately thin out birch.
Źródło:
Leśne Prace Badawcze; 2017, 78, 3
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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