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Title: Motion control shoe delays fatigue of shank muscles in runners with overpronating feet
Authors: Cheung, RT 
Ng, GY 
Issue Date: 2010
Publisher: SAGE Publications
Source: American journal of sports medicine, 2010, v. 38, no. 3, p. 486-491 How to cite?
Journal: American journal of sports medicine 
Abstract: BACKGROUND: The motion control shoe is a well-developed technology in running shoe design for controlling excessive rearfoot pronation and plantar force distribution. However, there is little information on the leg muscle activation with different shoe conditions. HYPOTHESIS: The motion control shoe can prevent excessive shank muscle activation and delay fatigue. STUDY DESIGN: Controlled laboratory study. METHODS: Twenty female recreational runners with excessive rearfoot pronation were tested with running 10 km on a treadmill on 2 days. Participants wore either a motion control running shoe or neutral running shoe on each day. Activities of their right tibialis anterior and peroneus longus were recorded with surface electromyography. The normalized root-mean-square electromyography and median frequency were compared between the 2 shoe conditions. RESULTS: Significant positive correlations were found between the root-mean-square eletromyography and running mileage in both the tibialis anterior and peroneus longus in the neutral shoe condition (P <.001). The median frequency dropped in both shoe conditions with mileage, but paired t tests revealed a significantly larger drop in the neutral shoe (P < .001 for peroneus longus, P = .074 for tibialis anterior). CONCLUSION: The motion control shoe may facilitate a more stable activation pattern and higher fatigue resistance of the tibialis anterior and peroneus longus in individuals with excessive rearfoot pronation during running. CLINICAL RELEVANCE: The motion control shoe may increase the running endurance, thus reduce overuse injuries, in athletes with unstable feet during long-distance running.
ISSN: 0363-5465
EISSN: 1552-3365
DOI: 10.1177/0363546509350738
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