The effect of sitting position on double poling cycle characteristics, trunk control and physiology in sit-skier : a case study
Tekijät
Päivämäärä
2020Tekijänoikeudet
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Introduction. Paralympic sit-skiing was introduced in Paralympics 1988. Since that, it has
been involved to International Paralympic Committee’s competitions (IPC). The athletes have
been divided into five different classes based on the level on impairment and loss of trunk
control. The classification is three-stepped process, where the level of the impairment and
trunk control of the athlete is evaluated. In cross-country sit-skiing, the athletes perform by
using double poling technique
Methods. In this case study, the subject was a Finnish 28-years old sit-skier, who is classified
to class LW11. The aim was to test the possible benefits of “kneeing” position with the
impaired subject who has performed in “knee-high” position. The measurements took four
days. During that time, the subject performed in both positions in maximal power output and
submaximal tests in ski ergometer as well as in maximal oxygen uptake test and two
anaerobic tests on treadmill. EMG, joint kinematics, cycle characteristics and blood lactate
were measured from each test. The respiratory variables were measured from submaximal
loads in ski ergometer and maximal tests on treadmill. Pole forces were measured from
maximal tests on treadmill.
Results. The main finding of this case study was that in the “kneeing” position, the subject
recorded longer time of exhaustion in maximal oxygen uptake test, higher maximal speed on
treadmill, longer time of exhaustion in anaerobic uphill test and higher maximal power (W) in
ski ergometer. There was no difference in VO2peak values, but B-Lapeak was clearly higher in
“kneeing” position in each test on treadmill. The trunk range of motion was limited in
“kneeing” position compared to “knee-high” position. Longer cycle time and lower cycle rate
were suggested to be the key patterns of double poling and connected with more economical
double poling performance in the maximal test and in both anaerobic tests.
Conclusion. The present results show that even for the athlete with limited trunk control, the
“kneeing “position can affect positively to sit-skiing performance. How this new sitting
position will work in the future and will the athlete due to the increased workload of the
erector spinae muscles be able to continue with the new position remains to be seen.
Nevertheless, based on this case study, we have now a protocol to test sit-skiing athletes, the
performance of them and the differences between the classes and the positions on a treadmill.
...
Asiasanat
Metadata
Näytä kaikki kuvailutiedotKokoelmat
- Pro gradu -tutkielmat [28164]
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Effect of Sitting Posture on Sit-Skiing Economy in Non-disabled Athletes
Lajunen, Kimmo; Rapp, Walter; Ahtiainen, Juha P.; Lindinger, Stefan J.; Linnamo, Vesa (Frontiers Media, 2020)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 ... -
Evaluating objective measures of impairment to trunk strength and control for cross-country sit skiing
Rosso, Valeria; Linnamo, Vesa; Vanlandewijck, Yves; Rapp, Walter; Fasel, Benedikt; Karczewska-Lindinger, Magdalena; Lindinger, Stefan; Gastaldi, Laura (Springer, 2021)In Paralympic cross-country sit skiing, athlete classification is performed by an expert panel, so it may be affected by subjectivity. An evidence-based classification is required, in which objective measures of impairment ... -
Simulated skiing as a measurement tool for performance in cross-country sit-skiing
Rosso, Valeria; Linnamo, Vesa; Rapp, Walter; Lindinger, Stefan; Karczewska-Lindinger, Magdalena; Vanlandewijck, Yves; Gastaldi, Laura (Sage Publications Ltd., 2019)The International Paralympic Committee mandates the development of an evidence-based classification system, which requires a measure of performance. Performance in cross-country sit-skiing is mainly dependent on force ... -
Performance-related physiological changes induced by one year of endurance training in young athletes
Mishica, Christina; Kyröläinen, Heikki; Valtonen, Maarit; Holmberg, Hans-Christer; Linnamo, Vesa (Frontiers Media SA, 2023)Introduction: Although maximal oxygen uptake (VO2max) is generally recognized as the single best indicator of aerobic fitness in youth, interpretation of this parameter and the extent to which it can be improved by training ... -
Towards a better understanding of Para sport development : A case study of National Paralympic Committee Trinidad and Tobago
Schrieverhoff, Silke (2022)The Paralympic Games has undergone tremendous growth and developed from means of rehabilitation to the second largest multi-sport event in the world. At its last edition at the Tokyo 2020 Paralympic Games, 162 nations ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.