In:
Scandinavian Journal of Medicine & Science in Sports, Wiley, Vol. 31, No. 3 ( 2021-03), p. 553-563
Abstract:
The present study describes differences in pacing patterns and sub‐technique selection in young compared to adult competitive cross‐country skiers. Eleven young male skiers (YOS) (14.4 ± 0.5 years, O 2peak 63.9 ± 2.8 mL∙kg ‐1 ∙min ‐1 ) and eight adult male skiers (ADS) (22.6 ± 4.3 years, O 2peak 77.4 ± 4.4 mL∙kg ‐1 ∙min ‐1 ) performed a free technique rollerski time trial (TT) over a distance of 4.3 km (YOS) and 13.1 km (ADS) to simulate normal racing distances. A GNSS/IMU system was used to track position, speed, and classify sub‐techniques. Skiing economy and O 2peak were measured on an additional day to calculate the relative oxygen demand ( O 2dem ) in 13 segments of the TT. YOS were slower than ADS in all types of terrain (mean speed difference of 13%), with differences for uphills of 19%, undulating terrain of 11% and downhills of 8% (all P 〈 .05). The mean relative O 2dem tended to be higher for YOS compared to ADS (120% vs 112% of O 2peak , P = .09), and the difference was more pronounced in the initial four segments of the race (130% vs 110% of O 2peak , P 〈 .01). YOS used more of the sub‐technique Gear 2 (23 ± 7 vs 14 ± 4%), less Gear 3 (36 ± 7 vs 45 ± 5%), and had more frequent transitions between sub‐techniques (18 ± 2 vs 15 ± 3 km ‐1 ) (all P 〈 .05) than ADS. Over an age‐related distance, young skiers tend to exhibit higher mean exercise intensity than adult elite skiers, with a more pronounced positive pacing pattern. Differences in physical ability affect speed and sub‐technique selections, implying a need for differentiating technical training for different ages and levels.
Type of Medium:
Online Resource
ISSN:
0905-7188
,
1600-0838
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
2025503-2
SSG:
31
