Wyniki wyszukiwania - Biblioteka Nauki

1

An Assessment on the Aerobic and Anaerobic Capacities of a Tennis Player

100%

Zatoń M. , Stępień A.

Human Movement

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2011

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tom 12

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nr 2

139-146

EN

Purpose. The purpose of this research was to determine the relationship between a tennis players' technical abilities and their capacity evaluated in both a laboratory and on the tennis court. Basic procedures. Twelve tennis players participated in the study. The anaerobic capacity test (Wingate) and the progressive test were performed on a Monark E 895 cycloergometer. The aerobic and anaerobic capacities were evaluated in the laboratory. The Weber capacity test was performed on a tennis court. Main findings. The research did not reveal any significant correlation between the Wingate's mechanical parameters and the physiological parameters of the Weber test. A correlation of the maximal oxygen uptake with stroke precision on a tennis court can be observed. The research found that the maximal power output (Pmax) and total work (Wtot) found in the laboratory is related to the stroke precision on a tennis court. Conclusions. The results may suggest that both tests can be applied in the assessment of capacity and the effects of training. From the results of the laboratory and on-court tests, it is possible to specify a player's semi-specific endurance.

2

The application of information technology in collecting data on tennis performance

100%

Nowak M. , Gąsiorek E. , Radomański J.

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2015

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nr 1(35)

36-52

EN

This study focused on the application and accuracy of spatially marking tennis shots in a special computer interface based on the visual observation of video recorded tennis play. The interface program, graphically designed in the shape of a tennis court, is shown on a computer screen along with a video showing a series of balls being hit and landing on the court. The task of the observer was to mark on the interface the location where he/she felt the ball falls on the court. In effect, the interface functions as a coordinate system whereby tennis play (in this case balls falling on one side of the court) is catalogued into a series of coordinative points. These data are then converted into a spreadsheet allowing for statistical calculation and analysis. The results of the trial indicated that the accuracy of the designated points on the interface depended on the distance between where the ball fell and the nearest line delineating the court. Balls that landed less than 0.3 m from the nearest line featured a mean distance error of only 0.11 m. For the purpose of analysing game tactics, the interface was found to be an applicable tool in the collection of tennis match data.

3

Physical Performance, Body Composition and Body Balance in Relation to National Ranking Positions in Young Polish Tennis Players

88%

Karnia M. , Garsztka T. , Rynkiewicz M. , Rynkiewicz T. , Zurek P. , Łuszczyk M. , Śledziewska E. , Ziemann E.

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nr 2

113-123

EN

Background: Tennis is characterized with short and intermittent efforts of an altering intensity and time where numerous factors determine the achieved success. Some of them include human's morphological body build, motor abilities and efficiency of the energetic systems. Both motor abilities and physical capacity appear to be particularly significant due to the unpredictable time and weather situation of the tournaments. The purpose of this study was to determine the relationship between body composition, aerobic capacity and the balance in young tennis players at rest and during fatigue triggered by an endurance test. Moreover, we tried to find the correlation between the tennis ranking position and the balance.Material/Methods: Well-trained 16 young tennis players (15 and 17 years old, singles national ranking 3-39, average training experience of 9 years) took part in this study. They were assigned to two groups according to their age - 15 TG and 17 TG. Participants completed the same battery of body composition, aerobic, and body balance assessments. Body balance measurement was repeated twice - before and after the aerobic assessment.Results: The main finding of this study points out the body balance to be a motor ability influencing results achieved in the specific tennis drill. This connection was observed in both of the tested groups; however, it was particularly significant within 17 TG.Conclusions: The presented study does not point out the main factor to focus on when conducting a career of a professional tennis player regardless of the numerous tests and measurements included in the analysis observed. Interesting correlations may suggest that for the players in a developmental age it is speed and balance that ought to be more intensively developed.

4

A Unique Case of Supraspinatus Tendonitis after Tennis Forehand Repetitive Motions

88%

Djurovic N. , Hraste M. , Stanisic L. , Lozovina M. , Lozovina V. , Pavicic L.

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tom 23

115-119

EN

A unique case of a professional tennis player who sustained a traumatic supraspinatus tendonitis while playing Forehand was presented. This case shows how science fields could and should cooperate in the future since this appears to be the first report of high inflammatory of supraspinatus tendon during Forehand motions. Instead of aggressive treatment in the form of surgery, a team of experts decided for new treatment that brought exceptional results.

5

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

88%

Papageorgiou K. G.

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nr 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.

6

Relative age in elite tennis

63%

O'Donoghue P.

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nr 4

7

Asymmetry of muscle mass distribution in tennis players

63%

Rynkiewicz M. , Rynkiewicz T. , Zurek P. , Ziemann E. , Szymanik R.

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nr 1

EN

Introduction. Tennis is a sport that requires asymmetric movements. Asymmetry in tennis pertains to the player carrying a racket and using it to hit the ball. An asymmetric tennis technique may lead to an asymmetric distribution of muscle mass and unbalanced muscle tonus. These disproportions will result in an improper body stature and may even cause irregularities in the skeletal structure. Aim of the Study. The aim of this study was to determine the degree of muscle mass asymmetry and its association with the dominant upper limb. Material and Methods. The study included 16 active tennis players: 15 right-handed and 1 left-handed. The control group (UN) comprised 16 non-training middle school pupils: 14 right-handed and 2 left-handed. Body composition was determined by means of bioelectrical impedance analysis (BIA). Results. Signifi cant differences between the dominant and non-dominant arms in tennis players were observed. The players featured a higher muscle mass of the dominant upper limb compared to the non-dominant limb. Similar differences were not observed amongst the controls. The control group was characterized with markedly lower asymmetry than the tennis players in terms of muscle mass distribution in the upper limbs (p < 0.05). No signifi cant correlations were found between age or training experience and the asymmetry coeffi cient values. Conclusions. The study revealed a signifi cant infl uence of sport training on asymmetry in muscle mass distribution in the upper limbs.

8

Can physical training minimize the gender differences in lung capacity of trained tennis players aged 14-17 years old?

63%

Pandit N. , Banik S. , Prasad S. K. , Majumdar P. , Banerjee O. , Bandyopadhyay A.

Medical Science Pulse

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2018

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tom 12

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nr 2

EN

Background: This study was based on gender differences in male and female trained tennis players. Aim of the study: The aim of this study was to determine the extent that physical training could minimize the gender differences in lung capacities in trained tennis players aged 14–17 years. Material and methods: The participants were ten male and seven female lawn tennis players, with a mean ± standard deviation (SD) age of 15.5 ± 1.27 and 14.43 ± 1.13 years, respectively. Physical characteristics and lung volumes were measured on the same day for each participant. Data were presented as mean ± SD, and Student’s t-test to compare the measured variables was performed. Results: Differences between genders were insignificant in terms of age (years), weight (kg), body fat (%), lean body mass (kg) and chest circumference (cm). However, height (cm), and W/H ratio were significantly (p < 0.05) higher in male tennis players in comparison to female players. Insignificant differences were found for TV (L), SVC (L), FVC (L), FEV1 (L), FEV1/FVC (%), FEF25-75% (L/s), PEF (L/s) and MVV (L/min). The only significant difference (p < 0.05) in lung function measures between male and female trained tennis players was for PIF (L/s). Conclusions: Male tennis players were taller than female tennis players of same age range, which might be advantageous for males while playing. Insignificant differences between male and female players in the various lung variables measured indicated that the influence of height and gender differences could be minimized by proper training during puberty. A significantly higher PIF in male players indicated stronger and more powerful inspiratory muscle activity compared with female tennis players.