Your question was: Doesn't the force increase at the end range, not allowing me to complete a full range of motion?
Our experts said: As with any resistive exercise, elastic resistance must be used properly. While the force of the bands and tubing does increase with elongation, the "strength curve" of elastic resistance is physiologically similar to human joint strength curves. This provides less torque at the beginning and end ranges, where the muscles can't produce as much torque.