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Journal of Strength and Conditioning Research|October 10, 2009
Research note: effect of load reductions over consecutive sets on repetition performanceJeffrey M Willardson, Mark S Kattenbraker, Maureen Khairallah, et al.
Journal of Strength and Conditioning Research|November 20, 2010
A comparison of trunk muscle activation: Ab Circle vs. traditional modalitiesJeffrey M Willardson, David G Behm, Stacey Y Huang, et al.
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