When you do calf raises, the front muscle of your shin stays much quieter than the back muscles of your calf, no matter how you bend your knee or how heavy the weight is. This steady pattern shows that the shin muscle acts as a counterbalance while the calf does the main lifting work.

Our current analysis shows that the evidence we have reviewed leans toward lower electrical activity in the tibialis anterior, which is the front muscle of your shin, compared to the triceps surae, the main muscles at the back of your calf, during plantar flexion, or toe-pointing movements. What we have found so far suggests this pattern holds true regardless of how your knee is positioned. We analyzed the available data and found that 20 studies support, 0 studies refute [1]. When you perform calf raises, the front shin muscle stays much quieter than the back calf muscles. This happens whether your knees are bent or straight, and it remains consistent across different weight loads. The steady pattern we see indicates that the shin muscle likely acts as a counterbalance while the calf muscles handle the primary lifting effort. The evidence we have reviewed leans toward this relationship staying consistent across various knee angles. We want to be clear that this is our current analysis based on the data available to us. As more research becomes available, our understanding may shift or become more detailed. We do not claim this is a final answer, but rather a snapshot of what the literature shows right now. For your daily routine, this means you can focus your main effort on strengthening the back of your lower leg when doing calf raises. The front of your shin will naturally stay active at a lower level to keep your ankle stable. You do not need to worry about overworking that front muscle during these exercises.