​Foto: Oscar Mattsson

Swimming sports

In competitive swimming events, starts and turns are frequently decisive, because swimming speed is strongly dependent on velocity during breakouts. Chalmers make advanced 3D movement analyses and develop sensor systems that are useful to both competitive swimmers and those swimming for exercise.

Based on 3D measurements made in collaboration with the Qualisys company, advanced computer calculations and models are made to find optimal body core postures and movement patterns for under water swimming and to use the waves that build up in the swimming pool to maximum effect. When combined with pulse rate and muscle activity measurements, it is possible to provide advice and instructions as to how best to plan and carry out the swim. One particular challenge is to translate measured data into language coach and swimmers can use to create drill programs that will improve performance.

The transfer of data from sensors attached to the swimmer is made complicated owing to the constant alternation between air and water – two media of widely differing properties. Wireless communication becomes especially difficult close to the surface where air bubbles build up. To deal with this, we are developing a new communication protocol that can also be used in several other areas, such as mobile telephony and the marine industry.

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Published: Thu 27 Aug 2015. Modified: Fri 11 Mar 2016