Tyrimo tikslas - nustatyti geriausių jaunųjų Lietuvos stalo tenisininkų aerobinį pajėgumą nuosekliai sunkėjančio iki maksimalaus krūvio metu. Buvo ištirti 7 didelio meistriškumo Lietuvos suaugusiųjų ir jaunių rinktinės nariai. Jų ūgis, svoris ir amžius buvo atitinkamai 168,1±7,2 cm, 57,3 ±3,7 kg, 16,3±2,3 metai. Tiriamieji po lengvos bendro pobūdžio pramankštos penkias minutes dirbo 50W galingumu, tada atliko nepertraukiamą kas vieną minutę sunkėjantį fizinį krūvį, siekiant nustatyti laktato kaupimosi slenkstį (LKS), jį atitinkantį širdies dažnį (SSD), maksimalų aerobinį galingumą (MAG), maksimalų ŠSD, anaerobinės laktatinės ištvermės rodiklį, taip pat įvertinti ŠSD atsigavimą. Pradinis krūvis buvo 50 W, o jo prieaugis -25W. Tiriamieji dirbo tol, kol galėdavo išlaikyti reikiamą darbo intensyvumą. Viso testavimo metu pulso matuokliu “Accurex-Plus”(Polar Electro, Suomija) buvo registruojamas ŠSD, vėliau buvo nustatomas ŠSD per paskutines 10 kiekvienos minutės sekundžių. Pagal Conconi (1982,1996) metodiką buvo nustatomi minėtieji aerobinio ir anaerobinio laktatinio pajėgumo rodikliai. Rezultatai parodė, kad geriausiems Lietuvos jauniesiems stalo tenisininkams būdingas vidutinis, lyginant su kitų sportinių žaidimų atstovais, bet blogesnis negu Švedijos stalo tenisininkų aerobinis pajėgumas. Jėgos ištvermės rodikliai, užfiksuoti nuosekliai sunkėjančio veloergometrinio krūvio metu, blogesni negu kitų sportinių žaidimų atstovų.

The aim of this study was to characterize aerobic capacity of sports aerobic athletes with different level of training during continuous increasing exercise. Lithuanian women aerobic gymnasts (15 subjects) participated in this study. According to performance (training) level they were divided in two groups: well trained (WT) and moderately trained (MT). All the subjects underwent maximum physical exercise (increasing run) with continuous intensity on the treadmill. During the treadmill test the respiratory gas exchanges parameters, heart rate and blood lactate concentration were measured. Respiratory gas exchange was established using telemetric equipment,heart rate was constantly registered every five seconds by pulse measuring instrument, lactate concentration in the blood (Kulis et al., 1988) was established by means of the Eksan‑G Universal (Lithuania) analyser using a membrane with ferment lactatoxidase. The results suggested that maximum and submaximum respiratorygas exchange and HR values of representatives of sports aerobic during the continuous incremental treadmill test were similar (p>0.05) in groups of athletes with different level of training.

The aim of the research was to determine effect of two months interval endurance training on aerobic capacity in sedentary women. Eight healthy females (age = 26,6±2,5 year (means ± SD); stature = 168,25 ± 5,9; body mass = 67,71 ± 13,50) were involved in 8 weeks duration interval endurance training (IET). The training session consisted of 8 repeats of the following intervals: 4 min running at constant moderate intensity followed by 2 min walking (at 5 km/h) and 2 min resting periods. The testees performed 3 training sessions per week separated by 1-2 days of rest. The initial intensity of training with 90% of the first ventilation thresholds was estimated after completion of incremental running test (IT) until exhaustion and it was repeated every four weeks. We measured these parameters: maximal oxygen uptake (VO2max), oxygen uptake (VO2) at the first and the second ventilation thresholds (VT1, VT2), blood lactate concentration [La], and maximal heart rate (HRmax). We did not detect significant differences in VO2max (CT: 39.876 ± 4.524 after 2 months IET 40.746 ± 3.393 ml/kg/min-1), VO2 at the VT1 (CT: 2.064±0.348 after 2 months IET 2.069 ± 0.250 l/min-1), at the VT2 (CT: 2.064±0.348 after 2 months IET 2.069 ± 0.250 l/min-1), and HRmax (CT: 194.6±7.6 after 2 months IET 193.3 ± 7.6 bt/min-1) among these parameters in pre-training and post-training periods. However, HR (CT: 174.8 ± 8.9 after 2 months IET 169.6 ± 12.8 beats/min-1) and speed (CT: 9.0 ± 0.8 after 2 months IET: 9.8 ± 0.7 km/h-1) at the VT1 and maximal speed (CT: 12.9 ± 1.9 after 2 months IET: 13.6 ± 13.6 km/h-1) significantly decreased after 2 months of IET. The speed at the VT2 (CT: 10.9 ± 1.0 after 1 month IET: 11.7 ± 0.9 km/h-1) significantly increased and body mass decreased (CT: 67.7 ± 13.5 after 1 month IET: 66.28 ± 11.4 kg) after 1 month of IET. The research results showed that 2 months of IET did not have positive significant effect on aerobic capacity, though, tolerance of performance had improved and body mass had decreased in examined sedentary women.