Didelio meistriškumo baidarininkų rengimas olimpinėms žaidynėms yra sudėtingas vyksmas. Varžybų metu raumenų veiklą labiausiai sąlygoja aerobinės reakcijos, bet labai reikšmingos yra ir glikolitinės reakcijos bei alaktatinis energijos gamybos būdas. Išanalizavus mūsų šalies baidarininkų rengimo praktiką, remiantis sporto mokslo pagrindiniais teiginiais bei organizmo adaptacijos prie fizinių krūvių dėsningumais, buvo sudaryta baidarininkų rengimo programa. Kompleksiniais tyrimais buvo kontroliuojama sportininkų organizmo adaptacijos eiga ir koreguojamas baidarininkų rengimas. Darbo tikslas buvo išanalizuoti Lietuvos baidarininkų rengimą ir dalyvavimą Sidnėjaus olimpinėse žaidynėse. Nagrinėja ma Lietuvos olimpinės rinktinės baidarininkų trenerio M. Rudzinsko auklėtinių rengimo programa ir analizuojami atlikto treniruotės krūvio apskaitos dokumentai. Pateikiami sportininkų išplėstinių tyrimų duomenys. Rengimo programa buvo pakoreguota taip, kad sportininkai du kartus per vasaros sezoną turėjo pasiekti geriausius sportinius rezultatus. Nuo pirmų varžybų iki antrų buvo 2,5 mėn. Tyrimo duomenų analizė parodė, kad baidarininkai, gerai suplanavus jų rengimą, sudarius tinkamą atsigavimo priemo nių programą, reguliariai tiriant jų organizmo adaptacijos eigą ir pagal tyrimo duomenis koreguojant rengimą, gali du kartus per sezoną pasiekti gerus sportinius rezultatus. Lietuvos pajėgiausi baidarininkai sėkmingiau rungtyniauja 500 m nuotolyje, todėl specializuotas rengimas turi būti skirtas 500 m nuotoliui įveikti.

The subject of the present article is the adaptation of the organisms of the Lithuanian national kayak-and-canoe team-members to training loads over a multiannual preparation period and the structure of their training process. It has been established that the annual load for high-skilled kayakers and canoeists amounts to 672 h, among them 329 h or 49% being devoted to the special physical training, and 343 h or 51% to the general physical training. [...]

The aim of this work was to research the change of high skill level rower's physical development, physical working capacity and functional abilities in the yearly training cycle, to establish the effectiveness of the workouts applied and also to predict the ways for further improvement in rowers' preparation. [...]

Organizmo aerobinio pajėgumo integralinis rodiklis yra maksimalus daguonies suvartojimas - VO2max. Tokį darbo intensyvumą, kai O2 vartojamas maksimaliai, priimta vadinti kritinio intensyvumo riba (KIR). Anaerobinis slenkstis (AS) sietinas su pieno rūgšties susidarymu raumenyse ir patekimu į kraują. Šio darbo tikslas buvo nustatyti Lietuvos akademinio irklavimo rinktinės moterų aerobinio pajėgumo kitimą ties KIR ir AS ribomis. [...]

The aim of the research was to assess the physical condition of the canoeists-members of the Lithuanian National Olympic team after the transition period, to elaborate to annual preparatory program fo Olympic Games. [...]

The aim of the present correlative study was to elucidate the main indices that exert strongest effects on canoeists preparedness for the 500 m distance Olympic team and its reserve. The main indices that change under different modifiable physical loads were elucidated. The following indices were checked: single muscular contraction power (Bosco, 1982), anaerobic alactic muscular power (AAMP) employing staircase ergometry and 10s load on a special ergometer, movement frequency per 10s, simple psychomotor response time, Roufier index (RI) (Skernevièius et al., 2004), as well muscular mass (Moor, Johnson, 1973). Special preparedness was determined from the indices demonstrated while covering the 500m simulation distance on a special ´Dansprint¡ ergometer. Pearson‘s linear correlation method was employed to find a correlation among separate indices and a regressive analysis was performed. The study revealed a close correlation of the efficiency of covering the 500 m simulation distance with AAMP under a 10s load and a reliable relation with staircase ergometry AAMP indices. Muscular mass showed a relation with special performance. The RI which reflects the circulatory functions showed a weak correlation with covering the 500 m simulation distance, although under such load 60-65 percent of energy is produced through aerobic reactions.

The aim of this study was to investigate the young athletes' nutrition planning according to the concept of adequate nutrition and formula of balanced nutrition taking into consideration athletes' canteen menus and their variations. For the investigation, athletes' canteen menus of the different seasons of years 2005-2006 were selected. From each seasonÿs every month, there were chosen 6-day menus with 4-day intervals (72 menus in total). The obtained data was compared to chemical composition of athletes' canteen menus of the year 1989. After carrying out comparative analysis of the menus, the variations of nutrition in athletes' canteen were assessed. The study results showed that the total energy quantity of athletes' canteen menu rations of the years 2005/2006 cover athletes' energy inputs. The mean energy value of rations equals 4882,63 ± 57,90 ccal (S = 127,34). Just slight variations where found following evaluation of the mean energy value of different season menus. Winter season menus had the highest energy value – 5044,83 ± 64,28 ccal (S = 276,40), while for the spring season, it was the lowest – 4726,4 ± 75,40 ccal (S = 324,21). However, the difference was statistically insignificant (p>0,05). Athletes canteen menus of the years 2005/2006 meet their energy requirements. On the other hand, the nutrition balance is reflected at best by the percentage of energy value supplied with proteins, fat and carbohydrates.

The food provided in athletes canteen only partially covers energy expenditure of athletes, depending on the age, sex, sport discipline, height and weight. So it is very important to estimate the athlete’s satisfaction with the canteen’s nourishment, evaluating the amount of the provided food in relation with hunger, appearing three hours after eating, also with the energy value of the provided food, depending on athletes’ nutrition schedule, in order to ascertain the objective groups, which have major connection with the risk of inadequate, unsuitable and unbalanced nutrition. The aim of this study is to evaluate the athletes’ satisfaction with the nutrition planning. The investigation have been performed during the year 2007. The investigation involved 50 athletes of Lithuanian Olympic Sport Centre selected randomly and eating in athletes’ canteen every day. In this study anonymous questionnaire method was used. Athletes’ satisfaction with the canteen’s nutrition of Lithuanian Olympic Sport Centre was investigated by this method. The data of the research was evaluated distributing respondents by age, sex, height, weight and sport discipline. The SPSS version 13,0 analytical software was used for the analysis of the research data. The data are statistically correct if the probability of bias is (p<0,05). Statistic relation is evaluated by Chi square parameter (χ2 ). The investigation showed that these athletes, who do not eat or eat very rarely their breakfast food portion, feel more hungry three hours after eating. Food amount receivable during the dinner is inadequate for athletes of track-and-field athletics and contemporary pentathlon, who are 18 – 20 years old, weigh 82 – 110 kg and 182 – 204 height. With the growth of age, height and especially weight the amount of food obtainable in the canteen is too small.[...]

In order to evaluate the condition of Lithuanian Olympic Sport Centre athletes’ organism supply of nutritive and biologically active products, there were examined and evaluated athletes’ 24-hour 3 days straight actual nutrition and nutritional mode. Inquired contingent consisted of high performance athletes representing skiing, biathlon, athletics, bicycle sport, canoe rowing, basketball, Greek-roman wrestling and boxing (n = 55). Statistical data analysis was made using SPSS v.13 programme package. The investigation data analysis was made by using mathematical methods: arithmetical averages ( X ), representative biases (S X ), standard deviations (S) were counted. To estimate the reliability of difference between index averages of research Student t criterion was used. Differences of index averages were to be statistically significant when p≤0,05. Pierson’s correlation coefficient (r) was used for calculations of statistical correlative connections between variables, when p ≤ 0,05. To evaluate the statistical significance of frequencies dispersion between different respondent groups chi square criteria (χ2 ), when p ≤ 0,05 was counted. The results of analysis have shown that the energy amount in athletes’ nutrition ration is 3914,3 ± 187,5 kcal (S = 1390,7 kcal) and it covers their energy inputs, but it is diagnosed that women nutrition ration average energy amount is too low (3175 ± 197,7 kcal (p = 0,003)). The amount of protein in men nutrition’s ration is too high (2,2 ± 0,1 g/kg (p = 0,000)). The amount of carbohydrates in women nutrition’s ration is too low (5,7 ± 0,5 g/kg (p = 0,020)).[...]

Aiming to make the nutrition of Lithuanian Olympic athlete’s representing endurance sports individual and optimal, the amount of dietary fat should not be strictly limited. Athletes’ nutrition with sufficient amount of fat determines that fat as an energy source substrate are utilized more effectively for energy production during prolonged endurance training. Furthermore, any adaptations of athletes organism leading to an increased capacity to utilize fatty acids for adenosintriphosphate resynthesis during very high intensity and (or) prolonged endurance physical training determines lesser utilization of endogenous carbohydrates which is related to the endogenous carbohydrates sparing and more effective utilization of muscle glycogen. That purposed the aim of our work to ascertain and estimate the influence of factual diet to energy expenditures during ultra endurance training of Lithuanian Olympic athlete’s representing cycling, long distance running and long distance walking sports. The results of research have shown that dietary carbohydrates and fat in high performance Lithuanian Olympic athlete’s representing endurance sports food rations are unbalanced. However, identified dietary carbohydrate and fat amounts are sufficient to ensure the physiological needs for fat and carbohydrates of endurance-trained high performance Lithuanian Olympic athlete’s organism. It was established that the potential of adaptation of high performance Lithuanian Olympic athletes’ representing endurance sports are not equal. More effective utilization of fat as a source substrate for energy production during low (30 % VO2 max ) intensity and moderate (50 – 60 % VO2 max ) intensity endurance training is associated to lower carbohydrate oxidation rate which is related to more effective utilization of carbohydrates during very intensive and (or) prolonged endurance training.[...]