Int J Sports Med 2018; 39(14): 1075-1080
DOI: 10.1055/a-0667-9875
Orthopedics & Biomechanics
© Georg Thieme Verlag KG Stuttgart · New York

Impact Loading During Distracted Running Before and After Auditory Gait Retraining

Eric Ching
1   Gait & Motion Analysis Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong"
,
Winko Wen-Kang An
1   Gait & Motion Analysis Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong"
,
Ivan Pui Hung Au
1   Gait & Motion Analysis Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong"
,
Janet Hanwen Zhang
1   Gait & Motion Analysis Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong"
,
Zoe Y.S. Chan
1   Gait & Motion Analysis Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong"
,
Gary Shum
2   Faculty of Sport, Health and Wellbeing, Plymouth Marjon University, Plymouth, United Kingdom of Great Britain and Northern Ireland
,
Roy T.H. Cheung
1   Gait & Motion Analysis Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong"
› Author Affiliations
Further Information

Publication History



accepted 26 July 2018

Publication Date:
12 November 2018 (online)

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Abstract

Visual feedback gait retraining has been reported to successfully reduce impact loading in runners, even when the runners were distracted. However, auditory feedback is more feasible in real life application. Hence, this study compared the peak positive acceleration (PPA), vertical average (VALR) and instantaneous (VILR) loading rate during distracted running before and after a course of auditory feedback gait retraining in 16 runners. The runners were asked to land with softer footfalls with and without auditory feedback. Low or high sound pitch was generated according to the impact of particular footfall, when compared with the preset target. Runners then received a course of auditory gait retraining, and after the gait retraining, runners completed a reassessment. Runners before gait retraining exhibited lower PPA, VALR and VILR with augmented auditory feedback (p<0.049). We found a reduction in PPA, VALR and VILR after gait retraining, regardless of the presence of feedback (p<0.018). However, runners after gait retraining did not demonstrate further reduction in PPA and VALR with auditory feedback (p>0.104). A small effect of auditory feedback on VILR in runners after gait retraining was observed (p=0.032). Real time auditory feedback gait retraining is effective in impact loading reduction, even when the runners were distracted.