0000000000827278
AUTHOR
Kimmo Lajunen
Effect of Sitting Posture on Sit-Skiing Economy in Non-disabled Athletes
This study focused on resolving the differences in economy between two common sit-skiing postures used by disabled athletes, suspected to be the most and least effective. Ten experienced non-disabled male cross-country skiers went through an incremental testing protocol with an ergometer simulating double poling in two sitting postures “kneeing” and “knee-high.” The protocol consisted of 3 × 4 min steady-state stages (13, 22, and 34% of maximal sprint power output). Subjects' respiratory gases and heart rate were measured and blood lactate concentrations were determined. In addition, pulling forces and motion capture recordings were collected. Oxygen consumption was 15.5% (p < 0.01) higher …
Physical performance, heart rate variability and hormone concentrations in cross-country skiers throughout the season
Cross-country skiing is an extremely demanding and versatile competitive sport. Fairly little is known about changes in basal hormonal concentrations and function of the autonomic nervous system throughout the season. Better understanding about these changes as well as their relationship to changes in physical performance and training could be useful for designing better training practices and periodization. This study followed 22 national level cross-country skiers (12 men, 10 women) throughout one competitive season. They were tested at the beginning of the season, during the general preparation season, during the specific preparation season and after the competition season for physical p…