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Sprawdzano możliwość wykorzystania N-bromoimidu kwasu bursztynowego (NBS) do oznaczania aspartamu w różnych produktach spożywczych o obniżonej kaloryczności. Aspartam oznaczano dwiema metodami: spektrofotometryczną i miareczkową, w obu wykorzystując NBS. Z porównania wyników otrzymanych obiema metodami wynika, że metoda miareczkowa jest bardziej dokładna niż metoda spektrofotometryczna, gdyż charakteryzowała się lepszymi parametrami średniego odzysku i precyzji.
The subject of the paper is pro-health behaviour of women (N=477) who have children (N=124) and those who have no children (N=353). The Theory of Planned Behaviour (TPB) by Icek Ajzen, in the light of which the differences in the health behaviour level of the sample group are considered, constitutes the theoretical basis of this work.The research group consisted of women at the age of 19-36 (M=27, 5 yrs of age SD=4 yrs of age). The Health and Behaviour Survey Questionnaire by Steptoe and Wardle was used for the measurement. Four scales of healthy behaviour values, i.e., taking up physical activity, avoiding addictions, hygienic and medical behaviour and nutritional habits were analysed.As a result of the comparison, it appears that childless women demonstrated a significantly higher physical activity level (M=263.03) compared to women who have children (M=170.58) at the significance level (p=0.001). As far as the hygienic and medical behaviour is concerned, a significantly higher level was observed in the group of women who have children (M=261.15) than in the group of childless women (M=231.22) at the significance level (p=0.037).Further research should focus on the determination of the influence of subjective norm change (knowledge) on the health activities undertaken by women.
Background: The aim of the study was to determine the value of indices of tactical and technical preparation (PTT) of Russian judo athletes during the Olympic Games in London. The values of these indices may designate the direction of activity in the process of special preparation and in the search for factors to optimize training before the main competitions. Material/Methods: During the Olympic Games in London in 2012, Russian judo representatives fought 31 fights. A multiple analysis of video footage and graphic registration allowed marking 423 technical attacks (including 24 efficient attacks) of the representatives of Russia and 384 attacks (including 5 efficient attacks) performed by their opponents in these competitions. On the basis of the classification of judo techniques developed by Kodokan Judo, an assessment of the effectiveness of particular groups of techniques has been made. The most commonly used technique and the dominant techniques used by the observed athletes have been distinguished. Indices of tactical and technical preparation have enabled the identification of characteristic features of preparation of the representatives of Russia and of their opponents during the Olympic Games in London in 2012. Results: Russian athletes were characterized by high efficiency of techniques from the grappling group. The dominant techniques were: varieties of the broken scarf hold (kesa gatame kuzure), back-lying perpendicular armbar (ude hishigi juji gatame), sweeping hip throw (harai goshi) and the sacrifice throw "valley drop" (tani otoshi). Athletes were characterized by stable efficiency of techniques from all the groups of throws and with 100% efficiency of defence in ground fighting. Russian competitors were far superior to their opponents in the efficiency of the ways and directions of performing throws (Ea - WP, NP, F, B). They retained a positive index of activity (A = +1.162). The advantage of values of the determined indices of tactical and technical preparation among representatives of Russia over their opponents in the Olympic Games in London was commensurate with the obtained results. Conclusions: The efficiency of Russian athletes during the OG in London was confirmed by the values of the indices by which tactical and technical preparation was evaluated. The analysis of indices allowed characterizing features specific to Russian representatives.
Background: At successive stages of sports competition, judo contestants aim at achieving the best sports result. Each fight can be resolved by an effectively executed attack before the regular time (ippon or double waza-ari) or by a better score for efficient attacks (waza-ari or yuko). The victory can also be achieved for penalties awarded to the opponent (shido) or when he/she is disqualified for infractions of the sports rules of the International Judo Federation. Material/Methods: The research material was based on the analysis of bouts fought by male competitors during the World Championships in 2014 and 2015. Results: The results of the conducted analysis allow concluding that at subsequent stages of sports competition the number of fights decided by efficiently executed techniques evaluated as ippon or double waza-ari decreased, just as the number of fights won through the opponent’s disqualification. On the other hand, the number of decisions based on a better score for efficient attacks and the number of fights in which athletes won due to penalties given to their opponents increased. Conclusions: At all the analysed stages of competitions, one quarter of the bouts was decided by penalties which were a consequence of committed infractions
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