A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Force Generation Profiles of Para-Nordic Sit-Skiers Representing Different Physical Impairments (2021)


Karczewska-Lindinger, M., Linnamo, V., Rosso, V., Gastaldi, L., Rapp, W., Vanlandewijck, Y., & Lindinger, S. (2021). Force Generation Profiles of Para-Nordic Sit-Skiers Representing Different Physical Impairments. Journal of Science in Sport and Exercise, 3(3), 281-291. https://doi.org/10.1007/s42978-021-00117-1


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Karczewska-Lindinger, Magdalena; Linnamo, Vesa; Rosso, Valeria; Gastaldi, Laura; Rapp, Walter; Vanlandewijck, Yves; Lindinger, Stefan

Lehti tai sarja: Journal of Science in Sport and Exercise

ISSN: 2096-6709

eISSN: 2662-1371

Julkaisuvuosi: 2021

Volyymi: 3

Lehden numero: 3

Artikkelin sivunumerot: 281-291

Kustantaja: Springer

Julkaisumaa: Sveitsi

Julkaisun kieli: englanti

DOI: https://doi.org/10.1007/s42978-021-00117-1

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/75479


Tiivistelmä

Purpose
To biomechanically profile force generation connected to the complex role of the trunk in double poling in a representative sample of Para-Nordic sit-skiers.

Methods
Twelve male World Cup Para-Nordic sit-skiers (sport classes: LW10–12) were skiing on flat snow terrain at submaximal speed of 4.5 m/s (~ 73% maximum speed). 2D video (50 Hz) and pole force analyses (1000 Hz) were performed synchronously, examining angle, force and cycle characteristics to analyse the role of the trunk in generating propulsion.

Results
LW10–11.5 skiers lost between 21% and 4% propulsive force versus LW12 athletes only due to different geometrics of the trunk and pole angle at an equal axial pole force. While LW10–11 skiers indicated trunk extension or position maintenance during pole thrust, LW11.5–12 skiers showed strong trunk flexion combined with smaller pole angles to the ground. Hence, LW11.5–12 skiers could create larger propulsive forces and therefore greater cycle lengths at lower cycle rates at the same speed. Maximum speed increased from LW10 to LW12 and was significantly correlated to trunk flexion range of motion (r = 0.63) and cycle length (r = 0.59). Trunk flexion ROM showed a significant relationship to the impulse of propulsive force (r = 0.63) and pole angle to the ground (r = − 0.76) (all P < 0.05).

Conclusion
The impact of impairment on the force production profiles and its physiological-biomechanical consequences need further investigation also in other terrains and at wider spectrums of skiing speeds. The evident problem of low numbers of LW10–11 skiers in World Cup needs creative future solutions for research.


YSO-asiasanat: biomekaniikka; voimantuotto (fysiologia); hiihto; vammaisurheilu

Vapaat asiasanat: para-Nordic skiing performance; biomechanics; trunk function; force production; classification


Liittyvät organisaatiot


OKM-raportointi: Kyllä


Viimeisin päivitys 2021-17-09 klo 16:39