Abstract
Research background and hypothesis. During the last five years Lithuanian long-term research related to the peculiarities of changes in physical fitness among 10-12 th -grade schoolgirls has not been found. Other research in Lithuania showed negative tendencies of physical fitness changes of Lithuanian schoolchildren and prevailing sedentary lifestyle.Research aim was to determine peculiarities of change results in physical fitness among Kaunas schoolgirls (10–12 th grades).Research methods. The present research included 10 th -grade schoolgirls (n = 244) of Kaunas city who were at school during the research and were able to perform the necessary Eurofit tests: 10 × 5 m Shuttle run, Standing Broad Jump, Sit ups in 30 seconds, 20 m endurance Shuttle run.Research results. Changes in results of Eurofit tests performed from 10 th grade autumn to 12 th grade spring were different. Results of girls (10–12 th -grade) in 10 × 5 m shuttle run test did not change (p > 0.05). Results of standing broad jump improved significantly in Grade 11 (p < 0.05). Results in 20 m endurance shuttle run test improved in Grade 12 (p < 0.05). Results in Sit ups in 30 seconds test improved in spring. Significant differences were found between 10 and 12 th -grade schoolgirls spring Sit ups in 30 seconds test results, and 10 and 11 th -grade autumn results.Discussion and conclusions. Comparison of physical fitness of 10 and 12 th -grade girls showed that it improved only in 20 m endurance shuttle run, in the 11 th grade explosive strength of schoolgirls significantly improved.Keywords: changes in physical fitness, Eurofit tests, physical characteristics.
Highlights
Physical fitness is an integral part of health and healthy lifestyle
The present research included 10th-grade schoolgirls (n = 244) of Kaunas city who were at school during the research and were able to perform the necessary Eurofit tests: 10 × 5 m Shuttle run, Standing Broad Jump, Sit ups in 30 seconds, 20 m endurance Shuttle run
Results in 20 m endurance shuttle run test improved in Grade 12 (p < 0.05)
Summary
Understanding physical fitness and knowledge of physical characteristics help children educators to successfully prepare the younger generation for happy life. High static loads and the resulting poor posture can affect the structural and functional changes in the growing human organism. Children grow and develop until their maturity, and during this complex process special and important changes take place in their organisms. Important for child development are teenage years when the child begins to mature sexually because during this period tumultuous changes in all body systems take place. During this period the bodies of boys and girls sensitively react to loads. High physical loads at this age can disturb harmonious development of children (Tutkuvienė, 1995)
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