Is Muscle Growth Limited by Basic Geometry? As Muscles Grow, Fibres Pennate More Steeply and Force per Unit Size Falls, Yet Pennation Packs In More Fibres
2 days ago
4 min read
Muscles are three-dimensional objects, and growing one changes its shape. In many muscles the fibres run at an angle to the tendon, and as the muscle thickens that angle steepens. That raises a plain geometric question: does a bigger muscle pull less efficiently along its tendon, and does that cap what further growth can deliver?
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