Dviejų mėnesių intervalinės ištvermės treniruotės poveikis nesportuojančių merginų aerobiniam pajėgumui

Abstract

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.