Skip Navigation LinksHome > May 2005 - Volume 19 - Issue 2 > PREFERENTIAL VASTUS MEDIALIS OBLIQUE ACTIVATION ACHIEVED AS...
Journal of Strength & Conditioning Research:
ORIGINAL RESEARCH: PDF Only

PREFERENTIAL VASTUS MEDIALIS OBLIQUE ACTIVATION ACHIEVED AS A TREATMENT FOR KNEE DISORDERS.

WILLIS, F. BUCK; BURKHARDT, ED J.; WALKER, JOHN E.; JOHNSON, MAURICE A.; SPEARS, TED D.

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Abstract

The purpose of this study was to compare the effect of an open-stance cycling protocol (OSCP) with the traditional cycling foot position (TCFP) for preferential vastus medialis oblique (VMO) muscle activation, measured by surface electromyography (SEMG), and preferential VMO activation as defined by achieving significantly increased VMO/VL (vastus lateralis muscle) ratio values. Forty subjects of both sexes participated, 18 symptomatic with patellofemoral pain and 22 control subjects; ages ranged from 18 to 60 years (mean 5 28.7 +/- 8 years). The OSCP and TCFP were ridden in randomized order while SEMG recordings were taken of the VMO and VL muscles, collecting the mean of peak amplitudes to calculate VMO/VL ratio values. The SEMG readings were taken 4 times per testing session with randomized resistance and a consistent cycling cadence of 85 rpm. The OSCP displayed preferential VMO activation for all subject groups (F = 40.47, p = 0.0001), and this study revealed a protocol that effectively treats patellofemoral pain.

(C) 2005 National Strength and Conditioning Association

 

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