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Kinematics of cross-country ski racing

 

作者: BILODEAU BERNARD,   RUNDELL KENNETH,   ROY BENOÎT,   BOULAY MARCEL,  

 

期刊: Medicine and Science in Sports and Exercise  (OVID Available online 1996)
卷期: Volume 28, issue 1  

页码: 128-138

 

ISSN:0195-9131

 

年代: 1996

 

出版商: OVID

 

关键词: CLASSICAL;CYCLE LENGTH;CYCLE RATE;DIAGONAL STRIDE;DOUBLE-POLING;FLAT;SKATING;UPHILL;VELOCITY

 

数据来源: OVID

 

摘要:

This study investigated the evolution of skiing velocity, cycle length, and cycle rate in elite and subelite skiers during cross-country ski races. Senior male cross-country skiers engaged respectively in a 30-km skating race(N= 34) or a 50-km classical race (N= 27) were videotaped as they skied two different sections of 30 m, a 7° uphill, and a flat section. In the skating race, most skiers used the offset technique on uphill and the 2-skate on flat, while the preferred techniques during the classical race were the diagonal stride for uphill and double-poling on flat. Results demonstrated that faster skiers had longer cycle lengths than slower skiers, except for the flat sections of the classical race. Cycle rate was not different between skiers of different performance levels in any circumstances or races. Decreased velocity observed during the second half of the skating race was almost entirely due to a decrease in cycle length. We conclude that slower athletes should emphasize extending cycle length during their technical training. Therefore, skiers should place an emphasis on strength and power training to increase their kick and pole pushes and enhance cycle length.

 



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