Mechanical Work and Physiological Responses to Simulated Flat Water Slalom Kayaking

Area of Science:

• Sports Science
• Exercise Physiology
• Biomechanics

Background:

• Flatwater slalom is a demanding Olympic sport requiring high levels of physical performance.
• Understanding the physiological and biomechanical demands is crucial for optimizing training and performance.

Purpose of the Study:

• To assess the physical work demand and physiological response during a simulated flatwater slalom competition.
• To analyze the relationship between force metrics and physiological outcomes in elite athletes.

Main Methods:

• Eight elite flatwater slalom paddlers underwent an incremental step-test to establish the power-oxygen consumption relationship.
• A simulated race run was conducted, measuring breath-by-breath oxygen consumption and force/power data at 50 Hz.
• Key metrics analyzed included stroke length, impulse, peak force, time to peak force, and rate of peak force development.

Main Results:

• Physiological response during slalom was significantly higher than straight-line paddling at the same power output.
• The simulated race involved an initial anaerobic contribution (32%) transitioning to aerobic capacity (68%).
• Moderate to strong correlations were found between time duration and peak force/rate of force development, but not stroke length or impulse.

Conclusions:

• Simulated flatwater slalom racing demands supra-maximal anaerobic work initially, followed by a shift to maximal aerobic capacity.
• Performance decline is linked to the inability to sustain work done, impacting peak force and force profile.
• Further research is needed to develop strategies for enhancing sustained performance in flatwater slalom.