Reducing Impact Loading in Runners: A One-Year Follow-up

Increased vertical impact loading during running has been associated with a variety of running related injuries including stress fractures, patellofemoral pain and plantar fasciitis. Purpose The purpose of this study was to examine the acute and long-term effect of a gait retraining program aimed at teaching runners with high impact loading to run softer. Methods 19 runners with high tibial shock first underwent a control period of 8 sessions of treadmill running over 2 weeks, progressing from 15 to 30 minutes. This was followed by 8 sessions of gait retraining over two weeks using the identical treadmill protocol. Real-time feedback of tibial shock was provided as the participant ran. Feedback was gradually removed during the last 4 sessions. Variables of interest included peak tibial shock (TS), vertical impact peak (VIP) and vertical average (VALR) and instantaneous loading rates (VILR). These variables were assessed at intervals following the retraining and at a one-year follow-up. Results All variables of interest were significantly reduced post-retraining (p

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