Muscle coordination in cross-country skiing: The effect of incline on the v2-skate technique
This study examined differences In upper (UB) and lower-body (LB) muscle activation of twelve elite Nordic skiers using the V2-skate at two inclines via electromyography (EMG). Subjects roller-skied on a treadmill for two 2-minute bouts, one at moderate grade - high speed and one at steep grade - low speed to keep heart rate equal between bouts. EMG was recorded (1 O-second interval), normalized to maximal isometric voluntary contraction, and analyzed for cycle time, peak and average activation, and within-cycle times for activation onset, offset, and peak activation of each muscle. UB tended to remain active for a longer proportion of the cycle at steeper grades while the opposite was true of LB. UB may play an increased role in the V2-skate at steeper grades independent of intensity, although no significant difference in LB or UB response to grade was found (p < 0.05).
© Copyright 2016 ISBS - Conference Proceedings Archive (Konstanz). Springer. Julkaistu Tekijä International Society of Biomechanics in Sports. Kaikki oikeudet pidätetään.
Aiheet: | murtomaahiihto tekniikka biomekaniikka analyysi lihas supistus lihassähkökäyrä |
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Aihealueet: | kestävyys urheilu biologiset ja lääketieteelliset tieteet valmennusoppi |
Tagging: | Skatingtechnik |
Julkaisussa: | ISBS - Conference Proceedings Archive (Konstanz) |
Toimittajat: | M. Ae, Y. Enomoto, N. Fujii, H. Takagi |
Julkaistu: |
Tsukuba
International Society of Biomechanics in Sports
2016
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Vuosikerta: | 34 |
Numero: | 1 |
Sivuja: | 1124-1127 |
Julkaisutyypit: | kongressin muistiinpanot elektroninen lehti artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |