Jul 202016

Brent Contreras discusses the latest science on muscle hypertrophy with Brad Schoenfeld so if you want to be up on the latest info be sure to read the article.

Sports science and strength and conditioning experts have been speculating about the mechanisms that create skeletal muscle hypertrophy for decades. One of the first mainstream fitness writers to summarize the popular scientific mechanisms of the time was Lyle McDonald. In his 1998 book on ketogenic dieting, Lyle proposed 4 distinct mechanisms of hypertrophy: tension, metabolic work, eccentric muscle actions, and hormonal response to weight training. This was 18 years ago and was the best synopsis of the research at the time.

Brad’s Conceptual Hypertrophy Model

Twelve years later, in 2010, Brad Schoenfeld published a review article in the Journal of Strength & Conditioning Research titled, The Mechanisms of Muscle Hypertrophy and Their Application to Resistance Training. In this classic article, Brad proposed that hypertrophic stimuli from resistance training fall into three categories: mechanical tension, metabolic stress, and muscle damage. Brad didn’t invent these categories out of thin air. Although he was the first link cell swelling research to da pump in bodybuilding and comprehensively summarize and categorize the literature pertaining to skeletal muscle hypertrophy, the three mechanisms had been proposed long before Brad popularized them. Rather, he conducted a thorough examination of the literature and provided a research-based case as to why they may be involved in the hypertrophic response to resistance training.

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