Wyniki wyszukiwania - Biblioteka Nauki

1

Anthropometry and throwing velocity in elite water polo by specific playing positions

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Ferragut C. , Abraldes J. , Vila H. , Rodríguez N. , Argudo F. , Fernandes R.

Journal of Human Kinetics

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2011

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tom 27

31-44

EN

The purposes of this study were threefold: to present the specific physical structure of elite water polo players by playing positions, to access its throwing velocity in different conditions (without goalkeeper, with goalkeeper and with previous displacement), and to observe the relationships between the assessed anthropometric and throwing velocity parameters. Nineteen water polo players of the Spanish National Team (nine offensive wings, five center back and five center forwards) were evaluated. The anthropometric profile (particularly the lengths, breaths, girths and skinfolds) was obtained according to the International Working Group of Kinanthropometry, and the throwing velocity was assessed in 3 × 2 maximal intensity shoots (3 min interval) from the penalty line using a radar. It was possible to observe higher values of body mass, BMI, and muscle mass of the center forwards compared to the wings, and foot length of the center backs compared with the wings, reflecting a specific physical profile for each playing position. However, no difference was found between groups regarding the breadths values. In addition, the somatotype of the wings is a balanced mesomorph, and the center backs and center forwards endo-mesomorphs. Despite center backs have higher hand grip values in comparison with wings, no differences were observed between specific playing positions in each throwing condition, as well as between conditions in each specific playing position. Moreover, observing the correlation coefficient values between anthropometric and throwing velocity variables by specific position for the three throwing conditions, a higher number of relationships was found for the center backs and center forwards rather than for the wings. When the total sample was analysed, a superior number of relationships was observed between the studied parameters in throwing with goalkeeper situation. These data reflects the dependence of the throwing skill on the anthropometric characteristics of water polo players.

2

Body composition of lean women with polycystic ovary syndrome

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Zabulienė L. , Urboniene J. , Tutkuvienė J.

Anthropological Review

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2013

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tom 76

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nr 2

183-198

EN

Polycystic ovary syndrome (PCOS) is one of the most frequent endocrine and metabolic disorders in reproductive age women, and it is related to changes in body size, shape and composition. Anthropometric somatotype is a quantitative description of the individual’s body shape and composition classified as endomorphy, mesomorphy or ectomorphy. Since PCOS somatotype has never previously been studied, here we evaluate body shape and composition phenomena in lean women with polycystic ovary syndrome and assess relationships with metabolic parameters. The study of 20-35 year-old women was carried out at the Department of Anatomy, Histology and Anthropology at Vilnius University. Standard anthropometric instruments and methods were used, and J. Matiegka’s equations calculated skeletal mass, skin and subcutaneous adipose tissue and muscles and internal organs. In addition, Heath - Carter’s somatotypes were computed, and the participants’ glucose, insulin, testosterone, sex hormone-binding globulin and lipid levels were established. We analysed data from 120 women with a mean age of 27.30 ± 3.68 years. Lean women with PCOS had greater skeletal mass by 0.47 kg (p<0.05, Cohen’s d=1.14), greater skin and subcutaneous adipose tissue mass by 2.79 kg (p<0.05, Cohen’s d=6.07) and lower muscle mass by 1.47 kg (p<0.05, Cohen’s d=2.84) compared to control women (p<0.05). The mean PCOS somatotype ratio was 4.96-4.38-3.00 (SD 1.50-1.26-1.11). This classified women with PCOS as mesomorphic endomorphs, in contrast to healthy women who were endomorphic mesomorphs. The PCOS subjects’ skin and subcutaneous adipose tissue and endomorphy/mesomorphy somatotype positively correlated with insulin levels and the HOMA-IR. It was established that lean women with polycystic ovary syndrome had a mesomorphic endomorph somatotype and higher skin and subcutaneous adipose tissue mass, but less muscle mass than healthy lean women. In addition, skin and subcutaneous adipose tissue positively correlated with insulin level and HOMA-IR in lean PCOS women.

3

Somatotype Variables Related to Muscle Torque and Power in Judoists

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Lewandowska J. , Buśko K. , Pastuszak A. , Boguszewska K.

Journal of Human Kinetics

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2011

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tom 30

21-28

EN

The purpose of this study was to examine the relationship between somatotype, muscle torque and power output in judoists. Thirteen judoists (age 18.4±3.1 years, body height 178.6±8.2 cm, body mass 82.3±15.9 kg) volunteered to participate in this study. Somatotype was determined using the Heath-Carter method. Maximal muscle torques of elbow, shoulder, knee, hip and trunk flexors as well as extensors were measured under static conditions. Power outputs were measured in 5 maximal cycle ergometer exercise bouts, 10 s each, at increasing external loads equal to 2.5, 5.0, 7.5, 10.0 and 12.5% of body weight. The Pearson's correlation coefficients were calculated between all parameters. The mean somatotype of judoists was: 3.5-5.9-1.8 (values for endomorphy, mesomorphy and ectomorphy, respectively). The values (mean±SD) of sum of muscle torque of ten muscle groups (TOTAL) was 3702.2±862.9 N × m. The power output ranged from 393.2±79.4 to 1077.2±275.4 W. The values of sum of muscle torque of right and left upper extremities (SUE), sum of muscle torque of right and left lower extremities (SLE), sum of muscle torque of the trunk (ST) and TOTAL were significantly correlated with the mesomorphic component (0.68, 0.80, 0.71 and 0.78, respectively). The ectomorphic component correlated significantly with values of SUE, SLE, ST and TOTAL (-0.69, -0.81, -0.71 and -0.79, respectively). Power output was also strongly correlated with both mesomorphy (positively) and ectomorphy (negatively). The results indicated that the values of mesomorphic and ectomorphic somatotype components influence muscle torque and power output, thus body build could be an important factor affecting results in judo.

4

Physical Characteristics and Somatotype of Soccer Players according to Playing Level and Position

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Hazir T.

Journal of Human Kinetics

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2010

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tom 26

83-95

EN

The purpose of this study was to assess the physical characteristics of soccer players according to playing level and position. A total of 305 professional male soccer players [Turkish Super League (SL) (n = 161) and Turkish First League (FL) (n = 144)] were involved in this study. All data were gathered at the beginning of preparatory period of mid-season. Height, weight, flexed and tensed upper arm and calf girths, humerus and femur biepicondylar breadths, and four skinfold thicknesses (triceps, subscapular, supraspinale, and medial calf) were measured. Somatotypes were estimated using the Heath-Carter method. SL players were older (p≥0.002), and heavier (p≥0.007) than FL players, while height (p ≤ 0.497) was similar between SL and FL groups. There were significant differences for BW (p≥=0.000), and height (p≥0.000) between playing positions. Goalkeepers were taller (p≥0.000), and heavier (p≥0.001) than other players. Midfielders were shorter (p≥0.013) than other players, however, they were lighter than forwards (p≥0.008). The mean somatotype of the overall players was 2.4-4.8-2.3 (0.9-0.8-0.7) in SL and was 3.0-4.5-2.6 (0.9-0.9-0.8) in FL. SL players were more mesomorphic (p≥0.01), less endomorphic (p≥0.000), and less ectomorphic (p≥0.001) than FL players. Except for goalkeepers, there were significant differences in paired means between whole somatotype means of the SL and FL according to playing positions. The results of the present study demonstrate that both physical characteristics and somatotype of players were significantly different between playing levels and positions. Although the somatotype of soccer players in both levels was dominated by the mesomorph category, players at the higher playing level were more mesomorphic, and less endomorphic and ectomorphic than players at the lower level at all playing positions.

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BODY STRUCTURE AND COMPOSITION OF CANOEISTS AND KAYAKERS: ANALYSIS OF JUNIOR AND TEENAGE POLISH NATIONAL CANOEING TEAM

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Hagner-Derengowska M. , Hagner W. , Zubrzycki I. , Krakowiak H. , Słomko W. , Dzierżanowski M. , Rakowski A. , Wiącek-Zubrzycka M.

Biology of Sport

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2014

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tom 31

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nr 4

323-326

EN

The somatic build, biological age, general state of health, mental predisposition and physical fitness are the criteria for selection of individuals in competitive sport. The present study aims to analys the differences in body structure and composition of canoeists and kayakers and derive conclusions regarding the criteria for selection of individuals incompetitive sport. The research was conducted on a group of 32 men aged between 17 and 22: 16 kayakers and 16 Canadian canoeists of the junior and teenage Polish national canoeing team. Body composition was examined by means of bioelectrical segmental impedance. Body build type was determined using the anthropometric Heath-Carter method. Statistical analysis was performed using the Welch t-test. The examination of morphological features reveals significant differences in the studied parameters between the canoeists and kayakers. There are also significant differences between competitors of the Sydney 2000 Olympic Games and the studied group. We found that competitive kayakers should be taller than canoeists. The lower part of the body in kayakers is more developed than in canoeists and canoeists are more dehydrated than kayakers.

6

Morphological characteristics of young elite paddlers

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Alacid F. , Marfell-Jones M. , López-Miñarro P. , Martínez I. , Muyor J.

Journal of Human Kinetics

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2011

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tom 27

95-110

EN

The aims of this study were to describe kinanthropometric characteristics of elite male and female young paddlers and to compare their proportionality with Olympic paddlers. One hundred and eighty seven young elite sprint paddlers (124 males and 63 females), aged 13 and 14 years, were assessed using a battery of 31 anthropometric dimensions. Somatotypes, Phantom Z-scores and corrected girths were calculated. Comparison between the 13 and 14 year old paddlers showed that 14 year old males had greater height, body weight, sitting height, arm span and upper body lengths, breadths and girths than their 13 year old counterparts, whereas 14 year old female paddlers only differed significantly from the 13 year olds in biacromial breadth and corrected arm girth. Mean somatotypes of male paddlers were best described as balanced mesomorphs, while female paddlers were centrals. Olympic paddlers had higher proportional dimensions in upper body girths, and biacromial breadth in both genders. The data provided in this study could be used as a guideline for talent identification in sprint canoeing and kayaking.

7

Body Composition and Kinematic Analysis of the Grab Start in Youth Swimmers

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Alptekin A.

Journal of Human Kinetics

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2014

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tom 42

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nr 1

15-26

EN

The purposes of this study were to compare the kinematic variables in youth swimmers during the grab start between sexes and to investigate the relationship between body composition and kinematic variables of the participants. Six female (Mage = 13.71 ± 0.49 yrs) and seven male (Mage = 14.00 ± 1.07 yrs) swimmers participated in this study. All participants were required to perform grab start tests in random order (three trials by each participant), while the best attempt was analyzed. Nineteen kinematic parameters consisting of block time, flight time, flight distance, total time, total distance, horizontal and vertical displacement of the center of mass (CM) at take-off, horizontal and vertical displacement of the CM at entry, height of take-off and entry, relative height of take-off, horizontal and vertical velocity of the CM at take-off, horizontal and vertical velocity of the CM at entry, angle of take-off, angle of entry and angle of knee at block were analyzed. Out of the 19 evaluated kinematic parameters, a statistical difference between the female and male group was found only in the total distance. Therefore, both female and male groups are considered as only one group and merged after analyzing the results. Statistical analysis showed positive and negative correlations between horizontal / vertical velocity of CM at take-off and several kinematic variables (e.g. angle of entry (rhorizontal = -.868, p=.000 / rvertical = .591, p=.02), total distance (rhorizontal = .594, p=.02 / rvertical = .54, p=.04), and height of take-off (rvertical = .888, p=.000), respectively). On the other hand, positive and negative correlations were found between somatotype components and several kinematic variables (e.g. horizontal displacement of CM at entry (rendomorphy = -.626, p=.013), angle of entry (rmesomorphy = -.686, p=.005 / rectomorphy = .52, p=.047), total distance (rendomorphy = -.626, p=.012), and height of take-off (rendomorphy = -.633, p=.011 / rectomorphy = .515, p=.05)). In conclusion, results show that in order to be successful at grab start performance, a swimmer should target to get higher horizontal velocity of CM at take-off and optimize the angle of take-off so this movement form supplies more total distance to the swimmer. Coaches should consider improving start performance and adding start training to regular training sessions. Moreover, youth male and female swimmers can participate together in the grab start training

8

Anthropometric Profile of Male Amateur vs Professional Formula Windsurfs Competing at the 2007 European Championship

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Cortell-Tormo J. , Pérez-Turpin J. , Cejuela-Anta R. , Chinchilla-Mira J. , Marfell-Jones M.

Journal of Human Kinetics

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2010

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tom 23

97-101

EN

This study aimed to describe the current anthropometric profile of Formula Windsurf competitors during the 2007 European Championships and establish a set of reference values useful for future investigations on player selection, talent identification, and training programme development. Fourty-five male participants (mean age 30±9.77 years; body height 182.04±6.3 cm; body mass 81.67±7.35 kg) were selected for the anthropometric profile, including 15 which the International Windsurf Association had defined as professionals. The anthropometric profiles included measurements of skinfolds, segment lengths, breadths, and girths. Somatotype measurements were also calculated into the equation. The male professional windsurfers had larger length, breadth, and girth measurements than their amateur counterparts. The three somatotype components showed that both groups were predominantly mesomorphic, but the professionals were more ectomorphic than endomorphic, whereas the amateurs were slightly more endomorphic than ectomorphic. The descriptive analysis of the anthropometric data provide relevant information concerning the morphological indicators of competitive success in this sporting discipline.

9

ОСОБЛИВОСТІ МОРФОФУНКЦІОНАЛЬНОГО СТАТУСУ ТА ФІЗИЧНОЇ ПІДГОТОВЛЕНОСТІ ЮНИХ СПОРТСМЕНІВ РІЗНИХ СОМАТОТИПІВ

75%

Скиба О. , Дмитрук С.

Педагогічні науки: теорія, історія, інноваційні технології

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2016

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nr 3(57)

276-284

EN

Morphofunctional status of children is a prognostic factor sports fitness, since it characterizes an individual development of the body and overall health. The aim is to determine the morphofunctional characteristics of children, who are engaged in cyclic kind of sports and to assess their impact on the indicators of success of the sports activity. The study methods are anthropometric, functional, mathematical and statistical methods. The result is an assessment of morphofunctional indicators of children, who are engaged in cyclic kind of sports depending on their somatotype. Among the surveyed contingent the advantage of mezosomal somatotype (55.56±4.99%) is observed. The percentage of children with microsomal type in the general structure of somatotypes is amounted 25.25±4.37%, respectively to 19.19±3.96% of children was classified as macrosomal type. Among the most representatives of microsomal somatotype (69.23±4.64%) a low level of development of strength abilities and the average level of physical performance (52.0±5.02%) is identified. The high level of physical performance was peculiar only for representatives of mezosomal somatotype (3.64±1.88%), also was observed among them the largest number of children with a satisfactory adaptation (10.53±3.09%). The least favorable in terms vegetative regulation there were children with macrosomal somatotype. Among certain groups of children in 44.27±4.99% sympathicotonia was noted, in 38.43±4.89% - vagotonia, which indicates the stress mechanisms of autonomic regulation of the heart rhythm. It was found that among those nine years, the growth of the indicators of special physical fitness was 0.25±0.10 (p <0.05), whereas among children of eight and ten years, the changes in the development of endurance were somewhat smaller (0.15±0.41 c and to -0.20±0,09 c, respectively). Somatotypological characteristics of the young athletes have the greatest impact on growth velocity (19.97%; F=11.36; p<0.001) and endurance (16.72%; F=9.13, p<0.001). The contribution of the somatotype performance in speed-strength abilities and strength is smaller and amounts to 8.56; F=4.26, p<0.01 and 4.94%; F=2.36, p<0.01, respectively.

10

Changes in Somatic Parameters and Dynamic Balance in Female Rhythmic Gymnasts Over a Space of Two Years

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Poliszczuk T. , Broda D. , Poliszczuk D.

Polish Journal of Sport and Tourism

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2012

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tom 19

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nr 4

240-245

EN

Introduction. Body build and the ability to maintain balance play an important role in the development and improvement of specialised motor habits and complex technical elements necessary to achieve significant sporting results in rhythmic gymnastics. The aim of this study was to determine changes in the level of ability to maintain dynamic balance and in the construction of somatic young female rhythmic gymnasts during a period of two year training. Material and methods. The research material consisted of 13 girls. When the first measurements were taken gymnasts were aged 7 - 12 years. In the study we utilised posturography and the Heath-Carter Anthropometric Somatotype Method. The analysis of the study showed that there were statistically significant differences (p <0.05) in the values of the dynamic balance indicators of the gymnasts' bodies in all three consecutive measurements over a course of years. Results and conclusions. It was noted that as the young gymnasts progressed in their training, their ability to maintain dynamic balanced increased. Based on the characteristics of the model, we developed an exemplary set of dynamic balance of rhythmic gymnasts. The somatotype of the tested athletes surveyed had been changing in the direction of increase in the proportion of components of endomorphy and mesomorphy. The balance ability of rhythmic gymnasts stabilised during their puberty associated with changes in body proportions ratio i.e.: height, weight and somatotype. The results and conclusions drawn can be an important part of selection and choice and can be used to control the dynamic balance in rhythmic gymnastics.

11

Changes in Body Build of AWF Students 1967-2008. Can a Secular Trend be Observed?

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Stachoń A. , Burdukiewicz A. , Pietraszewska J. , Andrzejewska J.

Human Movement

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2012

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tom 13

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nr 2

109-119

EN

Purpose. Previous research on intergenerational changes in body build has focused on body height and mass. The aim of this study was to determine both the direction and sexual dimorphism of secular changes in body build by using a sample population of students attending the University School of Physical Education (AWF) in Wrocław, Poland. Methods. The anthropometric data used in this study were collected every year from 1967 to 2008 and included a sample size of 4688 males and 3922 females. The subjects were analyzed for changes in somatotype by use of Sheldon's method, as modified by Heath and Carter. Basic statistical analysis for significance and post-hoc tests were used to analyze the data with Statistica 9.0 software. The data were then converted in Excel 2003 into chart form to analyze the direction of changes. Results. Analysis of the successive classes of male and female subjects during the 40-year period under study revealed a number of different directional changes in the mean values of body height, mass and the level of body build components. Trend lines, calculated by the mean values of five-year intervals, indicated an increasing tendency in both body height and mass in the two genders. Mesomorphy was found to be the largest factor of body build composition of females and males. Throughout the entire analyzed period, the endomorphy of males was significantly lower in comparison to females. In women, the level of fatness was similar to their level of musculature, but during the last several years the observed level of muscle in the students exceeded their fatness level. Ectomorphy happened to be the most stable component of both sexes. Conclusions. Analysis on the male and female sample population revealed a constant increase in body mass and height in successive generations. In female subjects, intergenerational changes were found to be characterized by a decrease in endomorphy and an increase in ectomorphy, while the level of mesomorphy remained at a similar level. In men, a secular trend was visible with an increase in mesomorphy, while the levels of endomorphy and ectomorphy stayed constant.