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Kinematical Effects of Rifle Carriage on Roller-Skiing in Well-Trained Female and Male Biathletes
Mittuniversitetet, Institutionen för hälsovetenskaper (HOV).
Department of Sport and Exercise Science, University of Salzburg.
Mittuniversitetet, Institutionen för hälsovetenskaper (HOV).ORCID iD: 0000-0001-5317-2779
Mittuniversitetet, Institutionen för hälsovetenskaper (HOV).ORCID iD: 0000-0002-1273-6061
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2022 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Purpose 

This study aimed to investigate how rifle carriage and skiing speed during biathlon roller-skiing affect range of motion (ROM) in joint angles and equipment (skis and poles), the vertical distance between shoulders and treadmill (vertdist), as well as possible sex differences associated with rifle carriage. 

Methods 

Fourteen biathletes (6 women, 8 men) roller-skied on a treadmill at submaximal and simulated race speeds, with (WR) and without (NR) a rifle, using gears 3 and 2. Kinematical data for the whole body, poles, roller-skis, rifle and treadmill were monitored using a 3D motion capture system. Movements determined as flexion/extension (x), abduction/adduction (y) and/or internal/external rotation (z) were analyzed for the hip, shoulder, thorax, knee, ankle, elbow, poles and roller-skis. ROM (the difference between maximal and minimal angles) in joints and equipment, and vertdist were analyzed over six skiing cycles during each condition (WR and NR) and speed. 

Results 

The maximal vertdist was lower for WR compared to NR (gear 3: 1.53±0.06 vs 1.54±0.06 m; gear 2: 1.49±0.06 vs 1.51±0.06 m; both p<0.001). ROM in the upper body was altered when roller-skiing WR (movements decreased in thorax and shoulder (x) and increased in elbow (only gear 3) (x), thorax (only gear 2) and shoulder (y) and (z); all p><0.05) and increased with speed, without differences between sexes (p>0.05). 

Conclusion 

Since rifle carriage and speed appear to affect the kinematics of rollerskiing, coaches and biathletes are advised to perform skiing technique training under competition-like conditions (i.e., at race speeds while carrying the rifle).

Place, publisher, year, edition, pages
Östersund: Mid Sweden University , 2022.
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:gih:diva-7828OAI: oai:DiVA.org:gih-7828DiVA, id: diva2:1801150
Conference
4th Nordic Winter Sports Conference, Östersund, Sweden, October 3-4, 2022
Available from: 2022-10-27 Created: 2023-09-29

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https://www.nordicwintersportsconference.com/

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Jonsson Kårström, MalinLund Ohlsson, MarieMcGawley, KerryLaaksonen, Marko S.

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Jonsson Kårström, MalinLund Ohlsson, MarieMcGawley, KerryLaaksonen, Marko S.
Sport and Fitness Sciences

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