Search results

1

Pancreatogastrostomy After Pancreatoduodenectomy

100%

Hać S., Dobrowolski S., Śledziñski Z.

Polish Journal of Surgery

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2008

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vol. 80

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issue 7

385-388

EN

Pancreatoduodenectomy has almost a hundred years of history. After resection, the pancreatic stump requires an anastomosis with the digestive tract. There is ongoing discussion about the optimal standard of digestive tract reconstruction. Two major groups of pancreatic anastomosis are used: pancreatogastrostomy and pancreatojejunostomy, but after some randomized and several other documented series there is no agreement on the superiority one over another method.The important feature related to pancreatic anastomosis' complication rate is the number of procedures performed each year in a facility.This manuscript summarizes the experience of the Gdansk Surgical Department with pancreatogastrostomy.

2

Directions and ways of executing judo throws during judo contests as a control criterion of an individual’s training versatility

100%

Marek A., Radosław L., Mirosław S.

Baltic Journal of Health and Physical Activity

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2012

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vol. 4

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issue 4

238-249

EN

Background: Symmetry of movement actions in sport is considered as an element of versatility which enlarges an individual’s technical and tactical capacity. Asymmetry usually limits this capacity and may also lead to overstrains of one side of the body and cause an injury. The research is done on health aspects and practical improvement in sport contest. Up-to-date research on judo contest effectiveness has been aimed at the ability of throwing into various directions. There is no material and data as compared to the directions of throwing and effective directions of the opponent’s attack. The purpose of this research was to find relationships between the directions of the executed throws and the side of competitors’ bodies used while throwing. Material/Methods: Within 2005-2010 1,968 judo contests were recorded by means of a graphic method of recording of a judo contest during 587 domestic and international judo competitions. 12 competitors (6 men and 6 women) were subject to our observations. The effectiveness of throws performed into 4 directions and of the used body side was determined on the grounds of the average number of points won or lost during a contest. Results: The effectiveness of judo throws performed to the left direction or by using the left side of the body is similar or higher to those performed to the other side. There is a relationship between the dominant part of the body while throwing and the directions of throwing, and the defense efficiency in relation to the directions and ways of executing throws by opponents. Conclusions: The effectiveness of the left attack directions and using the left side of the body may result from the training practice. It seems rational to find reasons for such high effectiveness of the

3

The Contest Effectiveness of the Men's National Judo Team of Japan, and Character of Their Technical-Tactical Preparation during the World Judo Championships 2010

100%

Adam M., Tyszkowski S., Smaruj M.

Baltic Journal of Health and Physical Activity

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2011

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vol. 3

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issue 1

65-74

EN

Background: The aim of our research was to determine the contest effectiveness of Japanese judo competitors and to state the quantitative an qualitative indices of the tactical-technical preparation (PTT). The values of these indices may be used for controlling the process of special preparation.Material/Methods: Medal classification of the national teams from all Olympic Games and World Championships, and contest effectiveness of the national teams during 2007-2010 were determined. The analysis of PTT indices of 16 Japanese competitors was carried out. They fought 78 contests during the World Championships 2010. Predominant techniques were described. The selected indices have been assessed.Results: Japanese competitors prevailed over their opponents in the men's group during the Olympic Games and the World Championships. After changing sport rules in judo, they overcame their poor performance within 2007-2009, and they have become leaders in world's judo. Japanese competitors are highly effective in leg throws, especially in such throws as: uchimata, osoto gari, and kouchi gari as well as seoi nage (although this throw is a hand technique). They executed throws forwards and mainly by means of pivot. Japanese competitors had a positive value of activity indices and high indices of defense.Conclusions: Sport results achieved by Japanese judo competitors prove their high contest performance and the dominating position in judo competitions. Among their dominating techniques, we can see leg techniques performed by pivoting and breaking balance forwards on toes. They are also effective in executing grappling techniques such as holdings (immobilizations) for example. During the World Championships in 2010 Japanese competitors were characterized by a positive value of activity indices and high indices of defence.

4

Lower Extremity Muscle Activity During a Women's Overhand Lacrosse Shot

100%

Millard B. M., Mercer J. A.

Journal of Human Kinetics

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2014

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vol. 41

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issue 1

15-22

EN

The purpose of this study was to describe lower extremity muscle activity during the lacrosse shot. Participants (n=5 females, age 22±2 years, body height 162.6±15.2 cm, body mass 63.7±23.6 kg) were free from injury and had at least one year of lacrosse experience. The lead leg was instrumented with electromyography (EMG) leads to measure muscle activity of the rectus femoris (RF), biceps femoris (BF), tibialis anterior (TA), and medial gastrocnemius (GA). Participants completed five trials of a warm-up speed shot (Slow) and a game speed shot (Fast). Video analysis was used to identify the discrete events defining specific movement phases. Full-wave rectified data were averaged per muscle per phase (Crank Back Minor, Crank Back Major, Stick Acceleration, Stick Deceleration). Average EMG per muscle was analyzed using a 4 (Phase) x 2 (Speed) ANOVA. BF was greater during Fast vs. Slow for all phases (p<0.05), while TA was not influenced by either Phase or Speed (p>0.05). RF and GA were each influenced by the interaction of Phase and Speed (p<0.05) with GA being greater during Fast vs. Slow shots during all phases and RF greater during Crank Back Minor and Major as well as Stick Deceleration (p<0.05) but only tended to be greater during Stick Acceleration (p=0.076) for Fast vs. Slow. The greater muscle activity (BF, RF, GA) during Fast vs. Slow shots may have been related to a faster approach speed and/or need to create a stiff lower extremity to allow for faster upper extremity movements.

5

Quantification and Analysis of Offensive Situations in Different Formats of Sided Games In Soccer

88%

Garcia J. D.-C., Refoyo Román I., Calleja-González J., Dellal A.

Journal of Human Kinetics

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2014

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vol. 44

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issue 1

193-201

EN

There has been a lot of research that enabled soccer to improve: its technique, tactics and strategy through analysis and training. Nevertheless, players’ need to interact with each other turns any defending or attacking situation into complex solutions with a wide range of variables to be considered, in which the player is never isolated and must make the move that has the most positive impact on play. Fifty-four sided games played in three different formats (5v5, 7v7 and 9v9) and with two age groups (U9 and U14) were filmed at three soccer clubs in Spain in order to identify the most relevant attacking moves, from a technical and tactical perspective. This study used the observational method; it is descriptive and is applied through well-prepared systematic quantitative observation in a natural environment. A key part of the method involved viewing the match recordings and logging moves that had been categorised beforehand. Cohen’s Kappa analysis showed that the results for the most representative variables presented a substantial degree of concordance (0.61-0.80). The results show that there were significant variations depending on the game format, and the following study will present a description and analysis of the aspects that had considerable influence on attacking moves in different formats of sided games (5v5, 7v7 and 9v9). The study also presents various practical applications for the area of training and analysing both youth and professional soccer.

6

Online coach development and certification programs in sports: are they possible?

88%

Papageorgiou K. G.

Central European Journal of Sport Sciences and Medicine

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2020

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vol. 32

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issue 4

69-75

EN

Anticipating the inevitable shift of coach education and Coach Certification Programs (CCP) to distance-learning platforms in the imminent future, I have attempted to identify obstacles that we are likely to face. After explaining the rationale and the potential benefits of such courses, I have identified technique as the most difficult component to both teach and evaluate. A specific viewpoint regarding technique is briefly discussed and several related guidelines are provided to assist in both teaching (coach education) and evaluating technique (CCP) within the context of distance education.

7

The Hydrodynamic Study of the Swimming Gliding: a Two-Dimensional Computational Fluid Dynamics (CFD) Analysis

75%

Marinho D., Barbosa T., Rouboa A., Silva A.

Journal of Human Kinetics

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2011

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vol. 29

49-57

EN

Nowadays the underwater gliding after the starts and the turns plays a major role in the overall swimming performance. Hence, minimizing hydrodynamic drag during the underwater phases should be a main aim during swimming. Indeed, there are several postures that swimmers can assume during the underwater gliding, although experimental results were not conclusive concerning the best body position to accomplish this aim. Therefore, the purpose of this study was to analyse the effect in hydrodynamic drag forces of using different body positions during gliding through computational fluid dynamics (CFD) methodology. For this purpose, two-dimensional models of the human body in steady flow conditions were studied. Two-dimensional virtual models had been created: (i) a prone position with the arms extended at the front of the body; (ii) a prone position with the arms placed alongside the trunk; (iii) a lateral position with the arms extended at the front and; (iv) a dorsal position with the arms extended at the front. The drag forces were computed between speeds of 1.6 m/s and 2 m/s in a two-dimensional Fluent® analysis. The positions with the arms extended at the front presented lower drag values than the position with the arms aside the trunk. The lateral position was the one in which the drag was lower and seems to be the one that should be adopted during the gliding after starts and turns.

8

A Review on the Effects of Soccer Small-Sided Games

75%

Aguiar M., Botelho G., Lago C., Maças V., Sampaio J.

Journal of Human Kinetics

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2012

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vol. 33

103-113

EN

Over the last years there has been a substantial growth in research related to specific training methods in soccer with a strong emphasis on the effects of small-sided games. The increase of research in this topic is coincident with the increase of popularity obtained by specific soccer conditioning, which involves training players to deal with soccer match situations. Given the limited time available for fitness training in soccer, the effectiveness of small-sided games as a conditioning stimulus needs to be optimized to allow players to compete at the highest level. Available studies indicate that physiological responses (e.g. heart rate, blood lactate concentration and rating of perceived exertion), tactical and technical skill requirements can be modified during small-sided games by altering factors such as the number of players, the size of the pitch, the rules of the game, and coach encouragement. However, because of the lack of consistency in small-sided games design, player fitness, age, ability, level of coach encouragement, and playing rules in each of these studies, it is difficult to make accurate conclusions on the influence of each of these factors separately.

9

Monitorowanie nakłuć stawów i tkanek miękkich pod kontrolą obrazu ultrasonograficznego

63%

Kowalska B.

Journal of Ultrasonography

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2014

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vol. 14

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issue 57

163-170

EN

Minor procedures with an injection needle are frequently performed in orthopedic clinics. They may be of a diagnostic, diagnostic and therapeutic or purely therapeutic nature. Ultrasound guidance while inserting the needle allows for a safe medicine administration and evacuation of fluid contents. It improves the efficacy of such procedures by ensuring accurate needle insertion in the target site. Ultrasound-guided procedures reduce the duration of treatment (e.g. medicines reach the target site directly; all fluid collections are removed, even multilocular ones) and minimize pain (by the selection of optimal access sites omitting tendons, vessels and peripheral nerves). This paper presents the principles of performing ultrasound-guided interventions. A detailed description of such a technique is provided and the most commonly injected medicines as well as their adverse reactions and contraindications are discussed. Attention is also paid to image optimization and the role of procedure site selection with the exclusion of otherpathologies in the puncture site (such as tumors, foreign bodies and vascular or nerve pathologies). What is more, the author also discusses the principles of needle length and thickness selection as well as the manners of its insertion in relation to the transducer. Moreover, the principles of aseptics that are mandatory during such interventions are also presented and the way to protect transducers from the effects of chemical disinfectants is discussed. Furthermore, the paper contains numerous photographs of performed interventions. It is addressed to clinical practitioners and its aim is to facilitate and improve the efficacy of the procedures which are commonly performed in orthopedics. Ultrasound guidance of joint and soft tissue interventions should become a gold standard in all orthopedic clinics.

PL

Częstą praktyką w gabinecie ortopedycznym są drobne zabiegi z użyciem igły iniekcyjnej. Mogą mieć charakter diagnostyczny, diagnostyczno-terapeutyczny oraz czysto terapeutyczny. Kontrola ultrasonograficzna prowadzenia igły pozwala na bezpieczne podawanie leków i wykonywanie ewakuacji treści płynnych. Poprawia skuteczność takich zabiegów, zapewniając precyzyjne umieszczenie igły w docelowym miejscu. Wykonywanie zabiegu pod kontrolą obrazu ultrasonograficznego skraca czas leczenia (np. lek zostaje precyzyjnie wprowadzony w miejsce docelowe, ewakuowana zostaje cała zawartość przestrzeni płynowych, nawet wielokomorowych), minimalizuje dolegliwości bólowe (poprzez wybór optymalnego miejsca dostępu, z pominięciem ścięgien, naczyń i nerwów obwodowych). W pracy przedstawiono zasady wykonywania interwencji pod kontrolą ultrasonografii, zaczynając od szczegółowego zreferowania techniki zabiegów, a kończąc na omówieniu najczęściej stosowanych leków, ich skutków ubocznych oraz przeciwwskazań. Uwzględniono zasady optymalizacji obrazu, opisano rolę wyboru miejsca wykonania procedury z wykluczeniem innych patologii okolicy wkłucia (guzów, ciał obcych, patologii naczyniowych lub nerwowych), opisano zasady doboru długości i grubości igieł, sposoby ich prowadzenia względem czoła głowicy. Przedstawiono zasady aseptyki obowiązującej w czasie interwencji. Omówiono również sposoby ochrony głowic przed działaniem odkażających środków chemicznych. Praca zawiera wiele zdjęć z przeprowadzanych interwencji. Jest adresowana do klinicystów praktyków. Ma na celu ułatwienie i poprawę skuteczności tych zabiegów, powszechnie wykonywanych w praktyce ortopedycznej. Monitorowanie nakłuć stawów i tkanek miękkich za pomocą obrazu ultrasonograficznego powinno stać się złotym standardem, obowiązującym we wszystkich gabinetach ortopedycznych.

Refine search results

Pancreatogastrostomy After Pancreatoduodenectomy

Directions and ways of executing judo throws during judo contests as a control criterion of an individual’s training versatility

The Contest Effectiveness of the Men's National Judo Team of Japan, and Character of Their Technical-Tactical Preparation during the World Judo Championships 2010

Lower Extremity Muscle Activity During a Women's Overhand Lacrosse Shot

Quantification and Analysis of Offensive Situations in Different Formats of Sided Games In Soccer

Online coach development and certification programs in sports: are they possible?

The Hydrodynamic Study of the Swimming Gliding: a Two-Dimensional Computational Fluid Dynamics (CFD) Analysis

A Review on the Effects of Soccer Small-Sided Games

Monitorowanie nakłuć stawów i tkanek miękkich pod kontrolą obrazu ultrasonograficznego