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Kinematical Effects of Rifle Carriage on Roller-Skiing in Well-Trained Female and Male Biathletes
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- Jonsson Kårström, Malin (author)
- Mittuniversitetet,Institutionen för hälsovetenskaper (HOV),Swedish Winter Sports Research Centre,Mittuniversitetet, Institutionen för hälsovetenskaper (HOV)
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- Stöggl, Thomas (author)
- Department of Sport and Exercise Science, University of Salzburg
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- Lund Ohlsson, Marie (author)
- Mittuniversitetet,Institutionen för hälsovetenskaper (HOV),Swedish Winter Sports Research Centre,Mittuniversitetet, Institutionen för hälsovetenskaper (HOV)
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- Östersund : Mid Sweden University, 2022
- 2022
- English.
- Conference paper (other academic/artistic)
Abstract
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- 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).
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
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- MEDICAL AND HEALTH SCIENCES
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- Mid Sweden University
- The Swedish School of Sport and Health Sciences
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