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Background. The objective of the study was to explore the dynamics of the functional state of the central nervous system (CNS) and neurophysiological processes of girls 16-18 years old in the context of their transition to a new level of social organization. Material and methods. The functional state of the CNS was studied in girls 16-18 years old in a state of relative muscular rest through observation of visible motive reactions, Loskutova’s method, and in the fifth minute of renewal after the physical loading with variable power. Results. We found that 17 year-old girls had the best functional CNS capabilities. The reduced adaptive capacity of the CNS in 16 year-old girls is due to their necessity for adaptive reorganization of regulatory mechanisms to new social conditions: examinations and university entry. After physical activity, 16 and 18 year-old girls registered stress reactions, indicating decreased CNS adaptation. Conclusions. 17 year-old girls were observed at rest to have better CNS functionality compared to the other age groups. Analysis of the dynamics of the functional CNS states of 16–18 year-old girls after exercise resulted in the identification of two main reaction types: 1) reduction of the basic criteria at high initial values; 2) increase of criteria of a general functional state of a brain at low raw data.
Introduction. Pubescence is a life stage with the most turbulent progression of sensorimotor abilities during the transformation of a child into an adult. Differences in all sensorimotor abilities between boys and girls are become significant at this age. The progression of reaction abilities in girls decreases at this age (girls achieve peak values around the age of 15), while the reaction abilities in boys keep improving into adolescence. Younger children compared to adults and older children show a reduced ability to perform one or more tasks concurrently with a movement task. Aim of Study. The purpose of the study was to determine the time of complex reaction of the lower limbs of children. Moreover, a relationship between reaction time, age and gender was also found. Material and Methods. The research group included 81 primary school students aged 10-15 years. Subjects were divided into four groups according to age and gender (Group 1 – 9.8 to 10.8-year-old girls, n = 20; Group 2 – 10.0 to 10.7-year-old boys, n = 19; Group 3 – 14.3 to 15.3-year-old girls, n = 21; and Group 4 – 14.2 to 15.2-year-old boys, n = 21). The measurements were carried out using the FiTRO Agility Check test. A two-way ANOVA revealed statistically significant differences between the groups. The significance level was adjusted to 0.05. Tukey’s post-hoc test was used to determine differences between pairs of groups. Results. There are significant differences between the boys and girls aged 14-15 years. Other differences between boys and girls aged 10-11 years were not statistically significant, however, girls performed with slightly shorter reaction times. Conclusions. The research showed a significant relationship between age and complex reaction speed in the age group of 14-15 of boys and girls. This study helps to prove that boys do not have shorter complex reaction times than girls aged 10-11 years.
Background. Eating behaviours play a key role in lives of young people who stay physically active. They influence both their correct development and performance. Objective. Evaluation of selected eating behaviours of girls and boys attending sport-oriented classes and identification of differences between eating behaviours of studied groups. Materials and Methods. 460 students attending sport-oriented classes in Poland participated in the study. A questionnaire prepared by the author of the study was the research tool. The data was gathered in Microsoft Office Excel 2010 worksheet. Statistical analysis was made with the use of StatSoft, Inc. Statistica version 10.0. Results. The questioned students most often had 4-5 meals a day- such an answer was given by 59.09% of the boys and 41.38% of the girls. 55.59% and 41.95% of them respectively had breakfast within 30 minutes from waking up and 41,96% of the girls and 39.51% of the boys had supper 2-3 hours before going to sleep. Whole meal bread and/or groats were most frequently consumed a few times a day as it was declared by 50.35% of the boys and 45.98% of the girls. The highest percentage of the respondents consumed vegetables at least once a day (31.61% of the girls and 31.47% of the boys). 44.83% of the girls and 40.9% of the boys declared eating fruit a few times a day. Conclusions. Studied eating behaviours of girls and boys in sport-oriented classes are largely wrong and require correction. The analysis of the gathered data indicated statistically significant differences between boys’ and girls’ eating behaviours, however, the boys’ habits were better.
Introduction. Despite a wide range of imaging modalities available today, clinically silent osteolytic changes in the skeletal system occurring in children are still a diagnostic challenge. Case report. The study presents the case of 10-year-old girl with a tumour in a thoracic vertebra. The patient was admitted to the Paediatric Orthopedics Clinic in the Paediatric Clinical Hospital in Lublin suffering from severe pain in the thoracic and lumbar spine. The pain had started suddenly. Physical examination showed lumbar spine pain and a forced scoliotic position. To reduce the symptoms, spinal traction, analgetics and myorelaxing drugs were used. X-ray and CT of the spine showed congenital unfused S1-S3 vertebrae. An MRI was scheduled for further diagnosis. After treatment, the symptoms disappeared and the the patient was discharged after 6 days. MRI showed an oval, well-demarcated lesion in the vertebra body and left side of the arch of the Th10 vertebra. The patient was admitted to the Clinic one again. CT scan of the thoracic spine showed an osteolytic lesion in Th10 vertebra. In the spine X-ray irregular vertebral body contour in Th10 vertebra, was seen. There were no signs of neoplastic infiltration. Scintigraphy showed increased radioisotope uptake in spinal processes of Th10 and Th11 vertebrae, which confirmed the MRI results. A transpendicular trepanobiopsy of the Th10 vertebrae was performed to provide material for histopathological examination. Then, a transpedicular stabilization of Th9-Th11 vertebrae and posterior sponylodesis with spinal autografts was performed. Histopathological examination showed no malignant cells but did not help to establish a diagnosis. Conclusion. In spite of using all the available diagnostic methods it was impossible to determine the type of lesion in the patient’s spine. Genetic tumour marker test can be considered.
Background. Dietary habits are formed at an early age and to a large extent they affect such nutritional behaviour in adulthood. Mothers in particular, influence family nutrition. In this respect, their knowledge, attitudes and behaviour about nutrition are responsible for the schooling of future generations. Many aspects of the link between food and health with nutritional behaviour in girls remain, however, unknown. Objectives. To determine the effect of girls attitudes towards the health benefits of food on selected dietary characteristics. Material and Methods. Study included 186 girls aged 13-21 years. Using a food frequency method the three dietary characteristics were obtained; food intake variety, fibre intake and fat intake, all of them expressed by a graded scale. Three validated questionnaires were used; FIVeQ, BSQFVF and BSQF. The girls attitudes towards the health benefits of food were rated from one of the survey’s six parts, comprising of 8 statements from the Health and Taste Attitude Scale (HTAS) accordingly graded. Statistical analyses used logistic regression. Results. The mean index of food intake variety was 28.7 foods/week (ranging 0–60), whilst the mean dietary intakes of fibre and fat were 16.7 points (0-36 range) and 18.2 points (0-52 range), respectively. Girls from the upper tertile with favourable attitudes on food health benefits had an odds ratio (OR) for adequate fat intake (<22 points) of 3.1 (95% CI: 1.28, 7.52; p <0.05), as compared to those from the middle-neutral attitudes tertile, with an OR = 1.00. The ORs for the relatively high food intake variety and acceptable fibre intake were 1.05 in girls from the positive-upper tertiles, which were not significant. Conclusions. The positive attitudes of girls towards the health benefits of food are conducive for making more favourable food choices and lowered dietary fat intake, however this did not significantly affect fibre intake nor food intake variety.
Introduction. Appropriate diet and physical activity are vital determinants of psychophysical development in children and adolescents. Objective. The aim of the study was to analyse an association between dietary habits and physical activity levels of adolescents from post-grammar schools. Material and methods. The study included 110 girls and 65 boys between 16 and 19 years of age from two post-grammar schools in Biała Podlaska in Poland. They were subjected to a diagnostic survey providing information on their diet (number of meals a day, their regularity, frequency of bread, dairy, meat, fish, sweet, fruit, vegetable and fast food consumption, preferred ways of food processing). Physical activity levels were determined with the International Physical Activity Questionnaire – Short Form (IPAQ-SF). Based on these data, the respondents were stratified to high, moderate and low physical activity groups. Due to small number of participants presenting with low physical activity levels, we did not include this group in further analyses. The significance of differences in the dietary habits of adolescents presenting with high and moderate physical activity levels was verified with the χ2 test. Results. Most girls and boys presented with high levels of physical activity. However, we did not find an evident relationship between dietary habits and physical activity levels. Girls from high and moderate physical activity groups differed solely in terms of the number of daily meals, frequency of meat and sweet consumption, and significant intergroup differences observed among boys pertained to the frequencies of whole-wheat bread, meat and fast food consumption. The abovementioned food products were consumed more often by girls and boys presenting with high physical activity levels. Conclusions. The dietary mistakes observed in physically active adolescents from post-secondary schools justify intensification of their dietary education programs.
Background: The objective of this study was to determine changes in the group size of girls and boys with proper BMI values and their peers with underweight, overweight and obesity in a twenty-year time span. Material/Methods: In 1985 and 1986,20,353 boys and girls were examined, and 20 years later, 10,705 students. Measurements of body height and body mass were taken, which enabled calculating values of the Body Mass Index (BMI). The statistical significance of differences between mean values obtained in 1986 and 2006 was verified with Student’s t-test for independent variables. The statistical significance of differences between the number of girls and boys classified to each group in respect of the whole group surveyed in 1986 and 2006 was determined with the χ² test. Results: The greatest generation changes in the mass-to-height proportions were noted in the youngest children from the Podlaskie Province. It was higher by 1.66% in pupils with 2nd degree underweight, and higher by 4.79% and 1.29% in pupils with overweight and obesity, respectively, while it was lower by 10.11% among boys with a normal BMI value. In girls the percentage with normal BMI values was observed to decrease by 8.95%, whereas among girls with overweight – to increase by 4.85%. Conclusions: The results may suggest that a greater percentage of the young generation will be characterized by improper mass-to-height proportions.
The human cloning is a controversial ethical subject. The polish comprehensive school pupils (210 girls and 107 boys) anonymously poll on causes of "human cloning". The "cloning" for 60% people means creating the copy of alive organism, however for 1% the method of artificial insemination. The majority of pupils (74,7%) don't accept the human cloning (74,7%). About 40% of pupils consider, that cloned man has the soul. About 70% of respondents have opinion, that in the future cloning man will be legal. Over 66% of pupils think, that cloned man will have the normal civil rights.
In an answer to the survey, 40% of the surveyed girls and 82% of boys declared regular eating of three or four main meals a day. Only 31% of the young people drank milk or milk beverages regularly, and almost half of the surveyed youth ate raw vegetables and fruit every day. Similar percentage had fish as well as poultry in their menu 1–2 times a week and about one fourth of the surveyed group: 3–4 times a week. Snacking (mainly fruit, sandwiches, crisps) between main meals was declared by 85% of the surveyed. As many as 97% of the surveyed young people ate fast food, but at the same time 100% of the surveyed girls and 95% of the boys expressed an opinion that this is not “healthy” food. Most preferred products were: pizza – 76% of the surveyed young people, open cheese and mushroom toasted sandwich with ketchup – 54%, Big Mac – 43%. A convenient form of consumption, attractiveness, taste and accessible price were regarded by most of the surveyed as great advantages of these products.
Idiopathic scoliosis (IS), despite multidirectional therapy, involves a significant impairment of the quality of life of the patients. It is caused by pain syndromes frequently accompanying IS, the etiology of which has not been entirely discovered. The present research on environmental factors predisposing to pain syndromes in girls with IS involved analysis of 54 girls under ambulatory care, aged 14-17 (on average 15.3-years-old ±0.99). The patients’ natural environment was analysed, including time spent in a sedentary position during the day, sleeping time, time spent on physical activity during the week, regularity of meals consumed, as well as the quantitative composition of the diet. The research also concerned the location and characteristics of ailment reported, as well as pain intensity on the Numerical Rating Scale (NRS). It was found that the most frequent locations of back pain were: lumbar section – in 28 persons (51.9% of the examined population), and thoracic section of the spine – in 21 persons (38.9% of the examined population). Pain occurring at the same time in the cervical, thoracic and lumbar sections of the spine was reported for 4 persons (7.4% of the examined population). Fifty girls (92.6%) were aware of controlling their body posture, and 23 persons (42.6%) were able to correct it. The group of girls under examination suffering from pain in the lumbar section of the spine was characterized by a longer period of retaining a sedentary position, less time dedicated to any therapeutic rehabilitation programme, higher intensity of pain, and a higher average age than the group with pain in the thoracic section of the spine. The research proved that patients with pain syndrome located in the lumbar part of the spine were characterized by more time spent in a sedentary position, less time spent on a therapeutic rehabilitation programme, higher intensity of pain and a higher average age than the group suffering from pain in the thoracic section of the spine. The lifestyles of the patients under examination and their lack of awareness of the need to control the body posture can affect the type and intensity of pain.
This study aims to find relationships between nutritional status, leptin and puberty. Methods. The research covered 66 healthy girls aged 9.8 ± 0.6 years, in prepubertal period. Body height, weight, arm circumference and skinfolds were measured, and serum leptin concentration was estimated. The evaluation of the pubertal stage and anthropometrical measurements was carried out again in a year's period. Results. During the observation, 32 girls reached the time of puberty (group I), while the other 34, at the same age, were still at prepubertal stage (group II). The girls in group II were shorter, lighter, had lower arm circumference, thinner skin fold on abdomen (p<0.02) and lower serum leptin concentration (p<0.003). Highly positive correlations between BMI, skin folds thickness and leptin concentration were proved. Conclusion. The results indicate relationships between the fat tissue amount, blood leptin concentration and puberty in girls.
The aim of the study is to present the way of nutrition of the Lublin high school students, particularly the differences related to sex. The examinations, which involved 386 students aged 15-20, were conducted using the author's questionnaire in 2004. The results of the chi2 test have revealed that girls consume fewer meals a day (p=0.01), more fruits (p=0.0001), prefer cooked (p=0.00006), vegetable dishes (p=0.0003) and non-carbonated water (p=000.2) compared to boys. Moreover, they pay attention to caloricity of meals (p=0.00001), their appearance (p=0.02) and expiry dates (p=0.00003). Boys more often consume their last meal after 8 p. m. (p=0.0003), eat quickly (p=0.01), favour choose prefer meat dishes (p=0.00004), preferably fried (p=0.00006), drink more liquids (p=0.003) including carbonated drinks compared to girls (p=0.00001).
Background: The aim of this study was to assess the relationship between the number of steps a day and biological (body fat, lean body mass, BMI and estimated VO2 max) and psychological (self-efficacy, enjoyment of PA and self-perception of body image) factors in 16-18-year-old girls. Material/Methods: The study included data from 60 girls, aged 16-18. Voluntary participants were selected from a public high school in Poland. Number of steps was measured with a pedometer Yamax Digi-Walker, model SW 701, during 7 days. Girls were classified into three groups: low active, slightly active and active (5,000-7,499; 7,500-9,999; ≥ 10,000 steps/day, respectively). The levels of psychological factors were determined by means of a questionnaire survey. Estimated VO2 max was assessed by a 1-mile walk test. The percentage of body fat and lean body mass was evaluated using Bodystat 1,500, bio-impedance method. Results: Analysis of variance showed no statistically significant differences in the biological and psychological variables among low active, slightly active and active girls. Conclusions: Girls in the study performed approximately from 5,000 to 12,500 steps a day. To explain better relationships between daily step counts and psychological and biological variables future research should additionally involve girls with less than 5,000 steps a day and more than 12,500 steps a day.
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