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Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0000000000000500
Original Investigation: PDF Only

A novel running mechanic's class changes kinematics but not running economy.

Craighead, Daniel; Lehecka, Nick; King, Deborah L.

Published Ahead-of-Print
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A novel method of running technique instruction, Midstance to Midstance Running (MMR), was studied to determine how MMR affected kinematics and running economy of recreational runners. An experimental pre post randomized groups design was used. Participants (n=18) were recreational runners who ran at least three days a week and 5 kilometers per run. All testing was done on a treadmill at 2.8 m[middle dot]s-1. The intervention group (n=9) completed eight weeks of instruction in MMR; the control group (n=9) continued running without instruction. The MMR group showed significant decreases in stride length (p=0.02) and maximum knee flexion velocity in stance (p=0.01), and a significant increase in stride rate (p=0.02) after the eight weeks. No significant changes were found in heart rate, rating of perceived exertion, or running economy. MMR was effective in changing stride rate and stride length, but was not effective in changing other kinematic variables such as foot contact position and maximum knee flexion during swing. MMR did not affect running economy. Evidence suggests that MMR may be an appropriate instructional method for recreational runners trying to decrease stride length and increase stride rate.

Copyright (C) 2014 by the National Strength & Conditioning Association.



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