Abstract Summary
Most running studies are conducted in laboratories and lack ecologic validity. Purpose 1. compare landing impacts between footstrike patterns (FSPs) during a marathon and 2. assess the relationship between speed and landing impacts across FSPs. Methods: Tibial shock of 226 M+F individuals (44.3±11.1yrs) was collected during a marathon. Habitual FSPs were screened prior to the race (169 RFS, 32 MFS, 23 FFS). Peak tibial shock (TS) was calculated at the 10km point of the marathon. TS was correlated to speed across FSPs. Results: Peak TS(g) was highest and similar in RFS and MFS, and lowest in FFS. TS was positively correlated to speed for RFS and MFS groups (p< 0.02), but not for the FFS group (p=0.83). Conclusions: RFS and MFS runners exhibit similar impact loading that is higher than FFS runners.
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