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Aim. The article aims to identify the effect of regular physical activity of medium and high intensity on the functional status of 5–6 and 6–7-year-old children. Materials and methods. The study involved children assigned for health reasons to the main medical group. A set of indicators characterizing the physiological, psychological, and behavioral aspects of the functional status was used. The experimental programs differed in the intensity of physical exercises. Results. Training programs based on high-intensity physical exercises contributed to a significant improvement in the functional status of the body, autonomic supply, physical performance and physical fitness compared to medium-intensity training programs. Comparison of functional indicators in children revealed that in 5–6-year-old children the level of general activation both in a state of calm wakefulness and under information loads at all stages of the study was higher than in 6–7-year-old children, while physical performance and motor fitness, on the contrary, were lower. Conclusion. The obtained results provide the evidence that 5–6 and 6–7-year-old children making physical exercises of high intensity performed better than those who had exercises of medium intensity as resulted from the degree of positive changes in functional indicators.

Aim. The aim of the article is to establish the effect of anaerobic glycolytic performance on the functional status and cognitive efficiency in primary schoolchildren. Materials and methods. Children aged 7–8 (n = 181) and 9–10 (n = 168) years participated in the study. All children belong to the main health group. A set of indicators characterizing physiological, psychological, and behavioral aspects, as well as physical performance and motor fitness was studied. Results. During the study, anaerobic glycolytic abilities of the body were considered as one of the main characteristics of physical performance in children aged 7–8 and 9–10 years. It was established that the functional status of children aged 7–8 and 9–10 years during quiet wake and under information load depended on the level of anaerobic glycolytic abilities. Using the data obtained with the analysis of variance it was found that anaerobic glycolytic abilities provided a statistically significant effect (p < 0.05–0.001) on background activity, psychophysiological reactivity, cognitive efficiency and anxiety level. The importance of the effect of anaerobic glycolytic performance on changes in various indicators of the functional status ranged from 4 to 9%. Conclusion. The results obtained prove that anaerobic glycolytic abilities are the leading factor determining not only the inner structure of primary schoolchildren’s functional status and its age-related changes but also the peculiarities of psychophysiological shifts in the functional status under information load.

This paper discusses the possibility of introducing the image of a grid (a mark) into the field of view of a Galilean telescope system and of converting such a system into a viewfinder. An explanation is given of the position of the pupils and ports in a Galilean telescope system operating in combination with the eye. Two layouts of Galilean viewfinders are proposed. © 2005 Optical Society of America