In the current literature, this was done based on the vertical trunk coordinates 11, 14 as well as on the angular velocity data of the thorax, pelvis or foot 12.
#Barefoot running shoes series
On the basis of nonlinear time series analysis, the local dynamic stability or running stability can be calculated 11, 12, 14. While the dependence of various biomechanical variables on footwear and their implications on injuries has been frequently investigated over the last decades 6, 7, 8, 9, 10, nonlinear running gait features have rarely been addressed 11, 12, 13. Studies focussing on barefoot running primarily investigate biomechanical, physiological or injury-related outcomes and a final conclusion on its benefits or detriments still needs to be determined 5. shod running has achieved an increased public and scientific attention over the last years with advocates on both sides of the cushioning spectrum 1, 2, 3, 4. While running stability is a relatively new concept, it enables further insight into the biomechanical influence of footwear.īarefoot vs. Changing from shod to barefoot running reduces running stability not only in the acute phase but also in the longer term. Within a single session, running stability decreased over the course of the 15-min run ( p = 0.012) without differences between both groups ( p = 0.060). Participants in the barefoot running group exhibited lower running stability than in the shod running group ( p = 0.037) with no changes during the intervention period ( p = 0.997). Of the 41 included participants (48.8% females), 37 completed the study (drop-out = 9.7%). One hundred running gait cycles at the beginning, middle, and end of each running session were analysed using one mixed linear multilevel random intercept model. During each session, an inertial measurement unit on the tibia recorded kinematic data (angular velocity) which was used to determine the short-time largest Lyapunov exponents as a measure of local dynamic running stability. Over an 8-week-period, both groups performed a weekly 15-min treadmill running intervention in the allocated condition at 70% of their VO 2 max velocity. In this randomized single-blinded controlled trial, young adults novice to barefoot running were randomly allocated to a barefoot or a cushioned footwear running group. shod running on local dynamic running stability. While the immediate effects of footwear on running biomechanics are frequently investigated, no research has studied the long-term effects of barefoot vs. Local dynamic running stability is the ability of a dynamic system to compensate for small perturbations during running.
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