Triathlon transition study: quantifying differences in running movement pattern and precision after bike-run transition
Many interesting attempts have been published to show the differences between competing in a triathlon in contrast to starting in a single running event. It appears that running movement patterns of triathletes are influenced by prior cycling in a way that the running motion becomes less efficient. The used attractor method provides a novel insight into analysis of human motion.
Various publications discuss the discrepancies of running in triathlons and stand-alone runs. However, those methods, such as analysing step-characteristics or ground-contact time, lack the ability to quantitatively discriminate between subtle running differences. The attractor method can be applied to overcome those shortcomings. The purpose was to detect differences in athletes’ running patterns (δM) and movement precision (δD) by comparing a 5,000 m run after a prior cycling session (TRun) with an isolated run over the same distance (IRun). Participants completed the conditions on a track and a stationary trainer, allowing the use of their personal bike to simulate an Olympic triathlon. During each run, three-dimensional acceleration data, using sensors attached to the ankles, were collected. Results showed that both conditions lead to elevated attractor parameters (δM and δD) over the initial five minutes before the athletes found their rhythm. This generates a new perspective because independent of running after a bike session or without preload, an athlete needs certain time to adjust to the running movement. Coaches must consider this factor as another tool to fine-tune pacing and performance. Moreover, the attractor method is a novel approach to gain deeper insight into human cyclic motions in athletic contexts.
Link to the official publication: https://www.tandfonline.com/doi/full/10.1080/14763141.2017.1391324
For a full text version please contact the author christian.weich@uni.kn