New mathematical model explains how the dynamic holder affects skating

Karl Daggfeldt and Henrik Petré, both researchers at GIH, have developed the new model. It can be used as an analytical tool to optimize skate design and plan future experimental and biomechanical studies to investigate its effects.

– Over time, our research may contribute to the scientifically grounded development of equipment that better matches different playing styles, movement patterns, and injury-prevention needs, says Henrik Petré, senior lecturer at GIH and PhD in sports science.

How the model explains the underlying mechanics

A previous GIH study has demonstrated that the construction of the dynamic blade holder can improve performance during backward skating. The new research now explains the underlying mechanics: how an integrated radius mechanism enables greater variation in the skate’s pitch angle without compromising ice contact and gliding ability.

– Through mathematical modeling, we have been able to show how the pitch angle increases as the contact point on the blade shifts. This gives us a tool to understand the function of the dynamic blade holder and its potential significance for both performance and injury prevention, says Henrik Petré.

The model shows the balance between glide and maneuverability

The model also shows that skates with traditional fixed blade holders, whose steel is typically sharpened in one or more radius, require a compromise:

• A smaller radius provides better maneuverability (variation of the pitch angle) but increases plowing resistance because the blade digs deeper into the ice, which can reduce speed.
• A larger radius provides better glide because of more ice contact, but limits the ability to change direction quickly due to a smaller variation in pitch angle.

The dynamic blade holder solves this trade-off by increasing the pitch angle without reducing blade-ice contact.

– Our model shows how the skate’s pitch angle can be adjusted more effectively with a dynamic blade holder. This may explain why players experience better control and feel smoother and more comfortable on the ice, and supports how the construction of the skate can contribute to improved skating technique, says Henrik Petré.

Next steps in the research

The research project continues, and the next phase involves an in-depth analysis of the dynamic blade holder’s effects in sport-specific movement patterns on the ice hockey rink. The aim is to increase understanding of how the dynamic blade holder design influences the biomechanics of skating, with particular focus on performance optimization and injury prevention. In the long term, the results may contribute to a more scientifically grounded development of skate design in elite sports.

Read the study in the scientific Sage Journal External link, opens in new window..
Read it also at GIH´s publication database DiVA External link, opens in new window..
Read more about our research project on the GIH´s website External link..