Determine the effects of eight weeks roller ski sprint training on anaerobic power, strength and some physiologic parameters in cross country skiers

The purpose of this research was to determine the effects of roller-ski sprint training on anaerobic power, strength, VCMnax and body composition of cross- country skiers. 30 cross-country skiers at national level participated voluntarily in the study. Subjects were divided into two groups as training (n=15) and control (n=15) according to pretest groups. Physical characteristic of all subjects were as follows; training group 18.15±1.62 year age, 172.6+3.81cm height, 60.91+5.50kg weight and control group 18.45+2.17 year age, 171.5±3.47cm height, 60.73+4.40kg weight. All the subjects trained six times a week for eight weeks. In addition to normal training the test group underwent exlra maximal sprint training for three times a week during the 8 week training session. The measurements were taken in the laboratory and on tartan track using the VI skating technique. The roller ski used was Pro-Ski C2 (Sterners, Nyhammar, Sweden). Wingate 30-second cycle ergometer, shuttle run for aerobic capacity, Cybex II Norm isokinctic strength for dominant leg and two legs and Tanita BC 418 BIA impedance for body composition measurements were taken pre and post training. The obtained results were analyzed by Wilcoxon matched pairs test for within groups and Mann-Whitney U for between groups The value of p<0.05 was accepted for statistical significance.At the end of this study the results showed that, there was significant difference between pre and post-test results within the training group for anaerobic power, VOiinax, 200m, 400m, 800m roller ski tests, all strength parameters and body composition. However, in the control group only % BW / Flexors Peak Torque (Nm/kg) in dominant leg, body fat and VOimax parameters changed Between the groups there was significant difference in Flexors Peak Torque, %BW/Extensors Peak Torque, %B\V/Flexors Peak Torque and Ratio for right leg, Flexors Peak Torque, %B\V/Flexors Peak Torque and Ratio for left leg, anaerobic power and roller ski performance.In conclusion, the training models main effect is on developing anaerobic power and strength.