On the Impossibility of Optimal Hypertrophy of Biarticular Muscles
DOI:
https://doi.org/10.51224/SRXIV.396Keywords:
Biarticular Muscles, muscle hypertrophy, Resistance training, Maximization of hypertrophy, Compound movementsAbstract
Biarticular muscles possess a multifaceted significance in the context of exercise selection. This is due to their ability to perform functions across two joints, which necessitates the thoughtful and meticulous selection of exercises that engage both joints.
This paper aims to investigate the underlying factors that render the achievement of optimal hypertrophy in biarticular muscles unattainable. It is posited that the conditions of peak contraction and stretch, while under active tension, are imperative prerequisites for achieving optimal hypertrophy.
In this paper, we shall focus on three biarticular muscles: triceps brachii (long head), rectus femoris, and hamstrings group. We shall also analyze why the common compound movements fail to provide adequate hypertrophic stimulus to the target biarticular muscle.
The two models explored in this discourse are differentiated on whether the joint of the weak function is fixed or not. The impossibility of these two models in providing optimal hypertrophy can be inferred based on mechanical deficiency and active insufficiency.
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