Effect of fatigue on double pole kinematics in sprint cross-country skiing

Zory, Raphaël; Vuillerme, Nicolas; Pellegrini, Barbara; Schena, Federico; Rouard, Annie

doi:10.1016/j.humov.2008.05.002

Cited by 37 publications

(56 citation statements)

References 20 publications

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“…[4][5][6][7][8][9][10][11] Therefore, the pole characteristics are of special interest in DP, 12,13 with pole length being one of the obvious parameters that could influence DP performance. Since the pole length used in a competition needs to be a compromise between the optimal lengths used in the different sub-techniques and terrains, knowledge about the specific effects of pole length on performance would be beneficial to cross-country skiers.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Pole Length on Performance, O2 Cost, and Kinematics in Double Poling

Losnegard¹,

Myklebust²,

Skattebo³

et al. 2017

International Journal of Sports Physiology and Performance

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Dette er siste tekst-versjon av artikkelen, og den kan inneholde små forskjeller fra forlagets pdf-versjon. Forlagets pdf-versjon finner du på journals.humankinetics.com: http://dx.doi.org/10. 1123/ijspp.2015-0754 This is the final text version of the article, and it may contain minor differences from the journal's pdf version. The original publication is available at journals.humankinetics.com: http://dx.doi.org/10.1123/ijspp.2015-0754 Cycle and reposition time did not differ between pole lengths at any speeds tested, whereas poling time tended to be shorter for self-selected than for long poles at the lower speeds (≤ 3.5 m·s -1 , P≤0.10), but not at the higher speeds (≥4.0 m·s -1 , P≥0.23).Conclusion: Double poling 1000-m time, submaximal O2-cost and center of mass vertical range of displacement were reduced in competitive cross-country skiers using poles 7.5 cm longer than self-selected ones.

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Section: Introductionmentioning

confidence: 99%

The Influence of Pole Length on Performance, O2 Cost, and Kinematics in Double Poling

Losnegard¹,

Myklebust²,

Skattebo³

et al. 2017

International Journal of Sports Physiology and Performance

View full text Add to dashboard Cite

show abstract

“…Zory et al, reported that a decrease in the cycle rate and an increase in the push and gliding durations was the result of fatigue during a XC skiing sprint competition12 ) . In addition, they reported that even when the cycle time was maintained, the corresponding push-time ratio would increase.…”

Section: Discussionmentioning

confidence: 99%

“…Most of these studies were carried out in simulated conditions1, 3,4,5,6,7,8,9,10,11 ) . However, few studies have examined how muscular fatigue affects performance in a natural environment for complex movements, such as XC races12,13,14,15 ) .…”

Section: Introductionmentioning

confidence: 99%

Effect of prolonged racing on muscle activity and spatiotemporal variables: double-poling technique

et al. 2017

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[Purpose] The purpose of this study was to examine the effect of a 40-minute race on muscle activity and spatiotemporal cycle variables at four-time points during a 12-km roller skiing test using the double-poling technique. [Subjects and Methods] Five elite cross-country (XC) skiers on the Korean National reserve team participated in the study. Part of a biathlon course that consisted of both flat land and slopes was selected, and three measurements were recorded after every 4-km lap. Spatiotemporal variables, mean frequency and mean amplitude of 6 muscles were the chosen computational parameters. [Results] Significant differences were observed in cycle time and rate. The mean frequency of the upper-body muscles exhibited declining trends, with statistically significant differences for the triceps brachii. In addition, there were significant differences in the mean amplitude of the tibialis anterior and gastrocnemius. The activity of the triceps brachii, tibialis anterior, and gastrocnemius showed some degree of dependence on the technique. [Conclusion] Training and race strategies that improve the function of elbow extensors and ankle dorsiflexors are important in XC skiing; the application of roller-ski training research to actual XC skiing competitions is needed.

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“…The fatigue accumulation in a sprint race also depends on the recovery times between the series. Zory et al (2009) suggested that fatigue in a sprint race alters kinematic patterns (greater trunk, hip, and pole angles) of double poling leading to a decreased cycle (and sprinting) velocity. However, the extent to which fatigue affects the power output in the XC sprint ski race has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Effects of Fatigue Related to Uphill on Kick Double Pole Kinematics of Young Cross Country Skiers

Günay¹

2017

IntJSCS

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The purpose of this study was to examine the effect of fatigue due to uphill on the kick double pole technique. Ten young male subjects volunteered to study. Subjects' cross country sprint times were taken using a kick double pole technique with maximum effort for 1 km in a climbing course with an average slope of 4%. In accordance with these measured times, a separate average speed for each subject was modified, and the subjects were tested on the treadmill at these specified speeds, with the same duration, slope, and technique. Each participant was asked to perform three trials with half an hour between them. Kinematic data were obtained using a three-dimensional motion capture system (Vicon Peak, Oxford, UK). Statistical analysis was performed by separating the variables into 3 separate groups: a) periods of time b) distance data c) joint angles. In conclusion, in kinematic data analyzed according to the fatigue of climb, there was a significant difference between the duration of the poling times, duration of the first cycles with the left leg propulsion and the last cycles, and the duration of the first cycles with the right leg propulsion and left leg propulsion. Significant differences were found in the hip, shoulder, elbow and trunk angles. Significant differences were also found among all the identified distances.

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Effect of fatigue on double pole kinematics in sprint cross-country skiing

Cited by 37 publications

References 20 publications

The Influence of Pole Length on Performance, O2 Cost, and Kinematics in Double Poling

The Influence of Pole Length on Performance, O2 Cost, and Kinematics in Double Poling

Effect of prolonged racing on muscle activity and spatiotemporal variables: double-poling technique

Effects of Fatigue Related to Uphill on Kick Double Pole Kinematics of Young Cross Country Skiers

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