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Influence of Tibial Shock Feedback Training on Impact Loading and Running Economy

Clansey, Adam Charles, Hanlon, Michael, Wallace, Eric S, Nevill, Alan and Lake, Mark J (2014) Influence of Tibial Shock Feedback Training on Impact Loading and Running Economy. Med. Sci. Sports Exerc., 46 (5). pp. 973-981. [Journal article]

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DOI: 10.1249/MSS.0000000000000182

Abstract

The purpose of this study was to determine whether real-time feedback (RTF) training would reduce impact loading variables previously linked with tibial stress fracture risk and whether these adaptations would influence running economy. Methods: Twenty-two male runners were randomly assigned to RTF (n = 12) and control (n = 10) groups. The RTF group received feedback based on their peak tibial axial accelerations (PTA) during six 20-min treadmill runs for 3 wk, whereas the control group adhered to the same training but without feedback. Unilateral threedimensional kinematic and kinetic analysis and running economy measurements were conducted before, after, and at 1 month posttraining. Results: The RTF group had significant reductions (P G 0.01) in PTA and average and instantaneous vertical force loading rates after training as compared with no changes in the control group. These modifications in impact loads were only maintained in PTA 1 month after the training. A significant increase (P = 0.0033) in ankle plantarflexion at initial contact and a significant change (P = 0.030) in foot strike pattern from a rearfoot to midfoot strike pattern and a significant decrease (P = 0.008) in heel vertical velocity at initial contact appeared to be the primary mechanical strategies adopted by runners to reduce impact loading after RTF training. Despite these gait adaptations, running economy was unaffected. Conclusions: The results of this study suggest that gait retraining using RTF is an effective means of eliciting reductions in impact loading without negatively affecting running economy. However, with loading rate reductions not being maintained 1 month posttraining, further research is required to determine how these reductions in impact severity can be retained long term.

Item Type:Journal article
Keywords:Gait retraining, kinematics, kinetics, overuse injury, tibial stress fracture
Faculties and Schools:Faculty of Life and Health Sciences > School of Sport
Faculty of Life and Health Sciences
Research Institutes and Groups:Sport and Exercise Sciences Research Institute
Sport and Exercise Sciences Research Institute > Centre for Sports Science and Sports Medicine
ID Code:29832
Deposited By: Mrs Julie Haydock
Deposited On:29 Jul 2014 10:38
Last Modified:01 Oct 2014 09:04

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