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Content available remote Dependence between Body Tissue Composition and Results Achieved by Weightlifters
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EN
Background: A literature review and an analysis of lifting techniques indicate that the tissue composition and structure of the body, and especially some of its elements have a decisive influence on the results. The objective of the reported study was to characterize tissue components of the best Polish male weightlifters in view of the age and sports results they achieve.Material/Methods: Competitors of the Men's Polish Championships in Weightlifting in 2004 were subjects of this study. The study comprised 138 sportsmen evaluated in the following age categories: seniors, youth, older juniors, and younger juniors. Measurements that enabled estimating the tissue composition of the body were taken with Piechaczek's method by. In the evaluated groups, sports results achieved in the Championships were converted into points according to Sinclair's scale. Arithmetic means and standard deviation (SD) as well as the number of points scored were computed in each age category. The value of Pearson's correlation coefficient was computed between the discussed somatic traits and obtained results.Results: Out of all the surveyed participants of the Polish Championships in Weightlifting only younger juniors were characterized by too high values of body height, which may affect their body mass to body height proportions.Conclusions: The analysis of results of the tissue composition of the body in age categories and with consideration given to the level of achieved sports results demonstrated that along with training experience and its level, the content of real active tissue was increasing in the surveyed sportsmen.
EN
Investigations have been done on 18 carcasses of wild boars including their cutting to main elements and detailed dissection of received parts of carcasses. It was found that the bigest element of wild boars carcass is a ham. High participation of neck shoulder and low participation of jowl is also characteristic. In comparison to the hog carcass the estimation of tissue composition showed not large quantity of adipose tissue and considerably higher mass of bones. Most valuable elements of wild boars carcass were ham and shoulder blade. The work confirms high useability of wild boars carcasses.
EN
Specific characteristics of sport disciplines require their performers to meet certain demands, also those related to body build. A success is conditioned, among other things, by the morphological structure of competitors. For this cause, their somatic features should be taken into consideration in the selection process. The aim of this research was to describe the level of morphological development and body proportions of swimmers in comparison to their non-practicing peers. What is more, different methods were used to evaluate body tissue composition. The research was based on the measurements of 33 swimmers and 36 non-practicing sport males as a control group, with the average training period of 9 years. The subjects ranged from 18 to 23 years of age. The anthropometric features were examined. Two methods, anthropometric and bioelectrical impedance, were used to estimate the amount of body fat. Athletes performing swimming are characterized by the significant body height, long trunk, wide range of arms and highly developed shoulder girdle. Directed and systematic training has an influence on a great development of the upper part of the trunk and a slight decrease in body fat. The observed differences indicate that depth, circumference and mobility of the chest developed in swimming have a positive influence on the respiratory system. Poor differences observed in the amount of fat in the athletes and non-practicing subjects may result from the fact that the body accumulates fat tissue, used as a good thermal insulation.
PL
Materiał do badań stanowiło 500 piskląt indyków WAMA-1. Indory odchowywano do 26., a indyczki do 22. tygodnia. Stwierdzono, że masa ciała i tuszki zwiększała się stosunkowo intensywnie, u indorów do końca odchowu, a u indyczek do 18. tygodnia życia. Poszczególne części tuszek wzrastały nie­proporcjonalnie. Najintensywniej zwiększała się część piersiowa: z 14.83% u jednodniówek do 36.78% u indorów 26-tygodniowych i do 35.55% u indyczek 22-tygodniowych. Procentowa zawar­tość nóg w tuszce do 2. tygodnia odchowu zmniejszała się, a następnie do 8. tygodnia nieznacznie wzrastała, po czym do końca odchowu ptaków pozostawała prawie na niezmienionym poziomie. Największe zmiany w procentowej zawartości w tuszce szyi i skrzydeł zachodziły do 2. tygodnia, a części grzbietowej do 4. tygodnia odchowu indyków. Masa mięsa tuszki w okresie odchowu wzrosła u indorów z 10 g u jednodniówek do 8.55 kg u ptaków 26-tygodniowych. W tuszkach indyczek 18-tygodniowych masa mięsa wynosiła 3.77 kg i do końca odchowu zwiększyła się zaledwie o 131 g. Wyrażona w procentach zawartość mięsa w tuszce zwiększała się u indorów do końca odchowu, a u indyczek do 16. tygodnia. Istotny wzrost masy kości tuszki stwierdzono u indorów do 20., a u indyczek do 14. tygodnia życia. W okresie odchowu ptaków masa skóry z tłuszczem zwiększyła się u indorów z 5 g do 1.41 kg, a u indyczek do 0.83 kg. Najkorzystniejszy stosunek mięsa do skóry z tłuszczem stwierdzono u 4-tygodniowych in­dorów i 6-tygodniowych indyczek. Na zakończenie odchowu stosunek mięsa do skóry z tłuszczem wynosił u indorów 6.0:1, a u indyczek – 4.3:1.
EN
500 young WAMA-1 turkeys constituted the research material. Turkey-cocks were raised to the age of 26 weeks and turkey-hens to the age of 22 weeks. It has been found that the body weight and carcass increased relatively intensively - in turkey- cocks till the end of raising, whereas in turkey-hens till the age of 18 weeks. Particular parts of the carcass grew disproportionately. The breast developed most intensively: from 14.83% in one- day-old turkeys to 36.78% in 26-week-old males and to 35.55% in 22-week-old males. A propor­tional content of legs in the carcass was decreasing to the age of 2 weeks, then it was slightly increasing to the age of 8 weeks, finally it remained almost unchanged till the end of raising the birds. The largest changes in the proportional content of the neck and wings in the carcass occurred to the age of 2 weeks, whereas in the content of the back - to the age of 4 weeks. The weight of meat in the carcass during the period of raising increased in turkey-cocks from 10 g in one-day-old birds to 8.55 kg in 26-week-old ones. In the carcass of 18-week-old turkey-hens, the weight of meat was 3.77 kg, and by the end of raising it increased only by 131 g. The percentage of meat in the carcass was increasing in turkey-cocks till the end of raising, whereas in turkey-hens till the age of 16 weeks. A considerable increase of the mass of bones in the carcass was found in turkey-cocks till the age of 20 weeks, and in turkey-hens till the age of 14 weeks. During the raising period the mass of skin with fat increased in turkey-cocks from 5 g to 1.41 kg, and in turkey-hens to 0.83 kg. The most favourable meat: skin with fat ratio was found in 4-week-old turkey-cocks and 6-week-old turkey-hens. At the end of raising the meat: skin with fat ratio was 6.0:1 in turkey-cocks, and 4.3:1 in turkey-hens.
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