Lower limb force-production capacities in alpine skiing disciplines

Area of Science:

• Sports Science
• Biomechanics
• Human Physiology

Background:

• Alpine skiing performance is influenced by specific force capacities, but consensus on these qualities and their differences between speed and technical disciplines is lacking.
• Understanding lower limb force-production qualities is crucial for optimizing training and performance in alpine skiers.

Purpose of the Study:

• To investigate the effects of skiing discipline (speed vs. technical) and performance ranking on lower limb force-production capabilities.
• To identify specific force characteristics that differentiate between speed and technical skiers and correlate with competitive success.

Main Methods:

• Thirty-one national-level alpine skiers performed loaded squat jumps and isometric mid-thigh pulls to assess dynamic and isometric force production.
• Statistical analyses, including general linear models and Pearson's correlations, were used to compare disciplines and assess performance associations.

Main Results:

• Speed skiers exhibited greater dynamic force at low velocities and higher maximum isometric force compared to technical skiers.
• Higher-ranked skiers demonstrated more force-dominant profiles and enhanced rate of force development.
• Maximum isometric force showed a strong negative correlation with speed skiing performance.

Conclusions:

• Alpine skiers, particularly speed specialists, benefit from high dynamic force output at low velocities and strong isometric force production.
• Specific force assessments and targeted conditioning practices are recommended for optimizing alpine ski performance.
• Force-dominant profiles and rate of force development are key indicators of success in elite alpine skiing.