Suomy - i was really considreing the motion up into the rise, the top of the rise, and then the start of the lowering action. My comments reflect my concern over my poor toes!! There is less force on them because i'm allowing my body to lower, rather than holding the position.
You are right that as we lower, we have to slow the lowering, and the energy transferred into horizontal movement, and this can increase the forces. But it's not all on my big toes!
I'm be surprised if people don't have the ankle and leg strength to control this lowering.