In the paper there are presented results of investigations of indices of the physical development of male adolescents aged of 11-17 years - residents of the 1-2 generation from new coming European migrants in the Magadan region during 2008-2014. There were observed 418 adolescents - representatives of the 1 generation, and 463 cases from the 2 generation. Representatives of the 2 generation in the initial period (11-12 years) were established to show higher tempos of growth. Maximal gains in the body length, body mass, and chest circumference in adolescents of the 1 generation occur at the age of 13-14 years, but in the 2 generation it is seen one year later - at the age of 14-15 years. In adolescents of each generation there was noted the high variability of the level of major indices of the physical development. However, among representatives of the 1 generation there is less proportion of cases with normal or average values of body length, body mass, and chest circumference along with larger proportion ofpersons with diverse deviations, as well deficit as excess in comparison with the 2 generation. At the final stage of the puberty age (17 years) more adolescents with microsomatic (25%) and disharmonic (38.2%) body constitution occur among the subjects from the 1 generation as compared to those of the 2 generation (19.7% and 28.2%, respectively).
The comparative research was carried to study basic indices of physical development and cardiovascular system in Aboriginals and north-born Europeans of different areas of Russia’s northeast (Chukotsky Autonomous District, Magadan Region). According to most examined morphofunctional characteristics no significant differences were found between the groups of subjects that testify to the formation, under the current social conditions, of convergent adaptation processes typical for the two ethnic cohorts from the observed areas of residing. High percentage of asthenia in body constitution of young residents from Magadan Region was common and mostly demonstrated by Aboriginals of the Magadan city.
Hazardous substances entering the sea, and ultimately deposited in bottom sediments, pose a growing threat to marine ecosystems. The present study characterized two coastal areas exposed to significant anthropogenic impact - Gulf of Gdansk (Poland), and Oslofjord/Drammensfjord (Norway) - by conducting a multi-proxy investigation of recent sediments, and comparing the results in light of different available thresholds for selected contaminants. Sediment samples were analyzed for benzo(a)pyrene (B(a)P) and other polycyclic aromatic hydrocarbons (PAHs), nonylphenols (NPs), organotin compounds (OTs), toxic metals (Cd, Hg, Pb), as well as mutagenic, genotoxic and endocrine-disrupting activities (in CALUX bioassays). In general, a declining trend in the deposition of contaminants was observed. Sediments from both basins were not highly contaminated with PAHs, NPs and metals, while OT levels may still give rise to concern in the Norwegian fjords. The results suggest that the contamination of sediments depends also on water/sediment conditions in a given region.
The aim of this study was to analyze whether the associations between perceived environmental and individual characteristics and perceived walking limitations in older people differ between those with intact and those with poorer lower extremity performance.
Persons aged 75 to 90 ( N = 834) participated in interviews and performance tests in their homes. Standard questionnaires were used to obtain walking difficulties; environmental barriers to and, facilitators of, mobility; and perceived individual hindrances to outdoor mobility. Lower extremity performance was tested using Short Physical Performance Battery (SPPB).
Among those with poorer lower extremity performance, the likelihood for advanced walking limitations was, in particular, related to perceived poor safety in the environment, and among those with intact performance to perceived social issues, such as lack of company, as well as to long distances.
The environmental correlates of walking limitations seem to depend on the level of lower extremity performance.