In physically active young men, six weeks of resistance training using a partial range of motion results in the same amount of muscle growth in the biceps and quadriceps as training with a full range...
Mechanism
Synthesis from 1 study
When people train hard enough to stop moving, their muscles grow the same amount whether they move through a full range or just the last part. The force and burn in the muscle are similar in both cases, so the body responds with the same growth.
Most probable mechanism
When muscles are worked hard until they can't move anymore, whether using a short or full movement, the same amount of force is generated across the muscle fibers, and the same level of metabolic buildup occurs, which triggers the same muscle growth response.
Muscle fibers experience similar levels of mechanical tension during final partial and full range of motion training when both are performed to muscular failure
Metabolic byproducts such as lactate and hydrogen ions accumulate to comparable levels in both training conditions due to similar time under tension and effort
Mechanical tension and metabolic stress activate mTOR signaling pathways in muscle cells, initiating protein synthesis and satellite cell recruitment
Net protein balance shifts positively over six weeks, resulting in equivalent increases in muscle cross-sectional area for both elbow flexors and knee extensors
Evidence from Studies
Supporting (1)
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Contradicting (0)
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