Don’t Confuse The Force-Velocity Curve With Newton’s Second Law

I recently received a barrage of messages from someone questioning statements I made in my article on the force-velocity curve. He claims I do not understand basic physical principles because he confuses the force-velocity curve with Newton’s second law of motion, which are completely different things. He then builds on his confusion of this in an attempt to make […]

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The Ratio Of Positive To Negative Strength And Implications For Training

While writing the article on the force-velocity curve and it’s implications for training  it occurred to me that it contradicted the claims of Nautilus inventor Arthur Jones of a specific ratio of positive to negative strength. I considered mentioning it in that post, then decided it I ought to save it for a separate article, then forgot about […]

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Positive Versus Negative Strength – The Friction Theory is Wrong

Decades ago, Nautilus founder Arthur Jones theorized muscular friction was the source of differences observed between positive and negative strength – reducing concentric efficiency while increasing eccentric efficiency. On several occassions Arthur has stated the following, “Everything in the known universe that has both mass and motion also has friction, and muscles are no exception. […]

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