Physiological and Biomechanical Dynamics in Cross-Country Skiing

Cross-country skiing is a uniquely demanding endurance sport characterised by continuous alternation between propulsion and glide phases, steep changes in terrain and varied sub-techniques. Physiologically, athletes must sustain exceptionally high rates of oxygen turnover while intermittently exceeding peak aerobic capacity during uphill sections, relying on both aerobic and anaerobic energy systems. Biomechanically, effective force transmission through skis and poles depends on optimised joint kinematics, timing of muscle activation and equipment–athlete interaction. Key performance determinants include cycle length and cycle rate, sub-technique selection (such as double poling, diagonal stride or skate skiing gears), poling mechanics and strength-endurance capacities. Recent advances in wearable sensors and motion analysis have deepened understanding of technique efficiency, muscle coordination and external workload distribution, offering novel insights for training and equipment design aimed at maximising propulsion, reducing fatigue and improving race tactics across sprint and distance events.

Research from Nature Portfolio

Recent studies have investigated how variations in pole geometry influence power output and movement efficiency in sit-skiing double poling. By manipulating the poling camber angle, researchers demonstrated that increasing the angle enhances total mechanical output yet reduces effective propulsion efficiency. Larger camber angles yielded higher cycle distances and increased shoulder and elbow joint moments, though with a trade-off in cycle frequency and net work per stroke. These findings indicate that optimal camber angles may be terrain- and speed-specific, guiding both competition tactics and targeted strength-training programmes for athletes using sit-ski equipment.

Physiological and Biomechanical Dynamics in Cross-Country Skiing publication trend

The graph below shows the total number of articles in physiological and biomechanical dynamics in cross-country skiing across all publications each year (not limited to Nature Index journals).

Technical terms

Aerobic capacity (VO₂peak): The maximum rate of oxygen uptake during intense exercise, reflecting cardiovascular and respiratory efficiency.

Anaerobic energy system: Metabolic pathways that supply energy without oxygen, enabling high-intensity efforts above VO₂peak for short durations.

Double poling (DP): A skating or classic sub-technique where both poles are planted simultaneously to generate forward thrust.

Cycle length and cycle rate: The distance covered per movement cycle and the number of cycles performed per unit time, respectively, indicating mechanical efficiency and speed.

Poling camber angle: The angle between the pole shaft and the force application point at the tip, influencing force direction and mechanical output.

Inertial measurement unit (IMU): A wearable sensor containing accelerometers and gyroscopes used to track body segment movement and orientation.

References

1. Optically Non-Contact Cross-Country Skiing Action Recognition Based on Key-Point Collaborative Estimation and Motion Feature Extraction. Sensors (2023).
2. A Review of Biomechanical and Physiological Effects of Using Poles in Sports. Bioengineering (2023).
3. Effects of poling camber angle on the biomechanics of cross-country sit-skiing. Scientific Reports (2023).
4. Energy system contribution during competitive cross-country skiing. European Journal of Applied Physiology (2019).