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    Wyświetlanie 1-4 z 4
    Tytuł:
    Każde dziecko i każda jego cecha ma swoiste tempo rozwoju, modyfikowane przez warunki życia w danym okresie. (Raport 2 z dwuletnich comiesięcznych badań na Jukatanie w Meksyku)
    Each child and each of its features has a specific pace of development, modified by the living conditions in a given period. (Report 2 of a Biennial Monthly Survey in Yucatan, Mexico)
    Autorzy:
    Wolański, Napoleon
    Rojas, Armando
    Valentin, Graciela
    Siniarska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1817736.pdf
    Data publikacji:
    2004-12-31
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    ekologia człowieka
    Meksyk
    Jukatan
    human ecology
    Mexico
    Yukatan
    Opis:
    In the first report, the specific monthly rate of changes of body build measures, typical for a studied group of youths and /or seasonal changes according to climatic conditions were not observed (Siniarska et al., 2005). The preliminary results suggested that observed changes rather depend on an adjustment to conditions and mode of life than to changes in nature. In the present report changes in particularly studied individuals were analyzed to verify the previous hypothesis suggesting that the rate of development has an immediate (causal) sense. The problem of whether the pubertal spurt is a single developmental effort or series of changes with dominance of intensified increments was considered. To explain the phenomenon of difference in onset of the pubertal spurt and its intensity in various populations, monthly measurements were conducted in individuals being at the age of puberty. The results show that each individual and its variable show a different rate of changes. It suggests that the rate of development and changes in body mass and fat mass are occasional. It rather depends on living conditions, mostly on nutrition and mode of life (physical activity and leisure). The only regularity shows that rather short (1-3 months) periods of rapid growth (saltations) are divided by slower growth periods (stasis), but their duration and time of occurrence have a very individual character. The rate and rhythm of each body build variables are also different. These phenomena depend rather on condition s in which the development of each individual occurs, as well as on its genetic predispositions and eco-sensitivity. It is probable, that differences in onset and intensity of pubertal spurt depend on alternations between periods of saltations and stasis of growth processes and on changes in body mass. These studies need to be repeated during a longer period of time (at least within a 5-year period ), in different climatic conditions and social groups.
    Źródło:
    Studia Ecologiae et Bioethicae; 2004, 2, 1; 47-74
    1733-1218
    Pojawia się w:
    Studia Ecologiae et Bioethicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czy istnieje sezonowy rytm rozwoju w warunkach tropikalnych? (Raport 1 z dwuletnich comiesięcznych badań na Jukatanie w Meksyku)
    Does a seasonal developmental rhythm in tropical conditions exist? (The first report from the monthly-two-year studies in Yucatan, Mexico)
    Autorzy:
    Siniarska, Anna
    Rojas, Armando
    Valentin, Graciela
    Wolański, Napoleon
    Dickinson, Federico
    Powiązania:
    https://bibliotekanauki.pl/articles/1817847.pdf
    Data publikacji:
    2004-12-31
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    ekologia człowieka
    Jukatan
    Meksyk
    human ecology
    Yucatan
    Mexico
    Opis:
    The main aim of this work concerns the answer to the question of whether the general regularity of seasonal differences in changes of height, weight, and body components during ontogeny in tropics exists. If so, whether this phenomenon depends on cyclic changes in nature or this rather is an adjustment to local conditions and mode of life.  To answer this question the studies took place in the tropical climate of Yucatan and included 49 boys and 47 girls aged 11-12 years and being of Maya, Mestizo, and Creole origin. The youths were attending two schools that were located in rather poor districts of Merida (the capital city of the Yucatan State, Mexico). The investigations started in February 2002 and ended in November 2003 and were continued monthly. The standard anthropometric methodology was applied to measure body height, weight, arm, waist, hip, and calf circumferences, and five subcutaneous fat folds (biceps and triceps brachii, subscapular, suprailiac and calf). Bioimpedance techniques were used to estimate fat mass (FM ), fat-free mass (FFM ), and total body water (TBW). The results show that general regularities in monthly or longer rates of stature increments and increments or declines of body mass do not exist. There are not similar regularities of changes even in groups of coevals of the same gender and within the youths coming from the same district. Each variable shows a quite specific rate of change.
    Źródło:
    Studia Ecologiae et Bioethicae; 2004, 2, 1; 9-46
    1733-1218
    Pojawia się w:
    Studia Ecologiae et Bioethicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Współzależność cech budowy ciała i dynamiki ich zmian w okresie pokwitania (raport 3 z dwuletnich comiesięcznych badań na Jukatanie w Meksyku)
    Interrelation between body build variables and their velocity during puberty. (The third report of monthly-two-year investigations in Yucatan, Mexico)
    Autorzy:
    Wolański, Napoleon
    Rojas, Armando
    Uc, Ligia
    Siniarska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1817734.pdf
    Data publikacji:
    2004-12-31
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    ekologia człowieka
    Jukatan
    Meksyk
    human ecology
    Yukatan
    Mexico
    Opis:
    In the present, the third publication included in this volume, the main topic considers the explanation of the existence of any relations between studied variables of body builds during the period of 22 months, e.g. from the beginning till the end of investigations. At that time the considerable changes related to the pubertal period took place. The results of the correlation matrix between studied variables and factor analysis for the whole material and for each gender separately are presented. It is seen that there are differences between boys and girls in the interrelation concerning studied variables and in separated latent factors. It is rather related to differences in the phase of puberty (more advanced girls than boys in this process), although the same calendar age. Girls who mature earlier are characterized by greater initial stature and greater body weight, BM I fat mass (including subcutaneous fat tissue), and fat-free mass at the beginning and end of the study than girls who mature later. However, later matured girls show, in the whole investigated period, greater increments in stature and weight than earlier matured ones (of the same calendar age). At the earlier stage of puberty (boys under study) the factor one (F I) representing body mass and its increments, is associated with final body height (at the end of study), whereas F3 is associated with initial height (at the beginning of the study). This association is reverse at the latter phase of puberty (girls under study), while F I (also representing body mass but not its increments) is associated with the initial height, whereas final height represents the separate factor (F3).
    Źródło:
    Studia Ecologiae et Bioethicae; 2004, 2, 1; 75-88
    1733-1218
    Pojawia się w:
    Studia Ecologiae et Bioethicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sprawność fizyczna dzieci wiejskich i miejskich z niskiej grupy społeczno-ekonomicznej na Jukatanie (Meksyk)
    Physical fitness of urban and rural schoolchildren from low social strata in Yucatan, Mexico
    Autorzy:
    Aftanasiuk, Maryla
    Powiązania:
    https://bibliotekanauki.pl/articles/1817895.pdf
    Data publikacji:
    2003-12-31
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    ekologia człowieka
    sprawność fizyczna
    Meksyk
    Jukatan
    obszary wiejskie
    dzieci
    human ecology
    Physical fitness
    rural schoolchildren
    urban schoolchildren
    Yucatan
    Mexico
    Opis:
    Body build and physical fitness of schoolchildren of low socioeconomic strata from urban and rural areas of Yucatan were studied. The material consisted of 552 children from Merida (the capital city of Yucatan State, Mexico) and of 526 children from the Yaxcaba horticultural community, 7 through 14 years of age. These are cross-sectional samples studied in 1996-97 in Merida and in 1999 and 2000 in Yaxcaba. The ethnic origin was evaluated using two surnames of children (from the father and mother side). The studied variables included stature, BMI, arm circumference, grip strength, agility run, Sargent vertical jump index (explosive strength), spine flexibility index, and reaction time. Urban children are significantly taller than rural ones, and BMI and arm circumference show also a tendency to be greater in urban areas. Physical fitness tests are better performed (better results) in rural areas than in urban ones. If the whole material is divided according to two ethnic groups (Mayas and Mestizos, and Creoles)  the differences in body build are still observed but those in physical fitness disappeared. Creole children are taller than Mayas and Mestizos and they show a tendency to have more weight for height and greater arm circumference. Generally, the differences in physical fitness are only observed between rural and urban children what may be caused by a more active way of life in villages than in towns resulting from agricultural activity. However, differences in stature are observed between ethnic as well as between rural and urban groups. This may have the genetic origin (Creoles and Mayas), and in the case of different localities, it may also be caused by more various nutrition in towns than in villages.
    Źródło:
    Studia Ecologiae et Bioethicae; 2003, 1, 1; 127-140
    1733-1218
    Pojawia się w:
    Studia Ecologiae et Bioethicae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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