How do timing and spacing choices affect the perceived weight of a character during fast actions?

Example Concept: Timing refers to the number of frames between key poses, while spacing is the distance an object moves between those frames. For fast actions, using fewer frames (tight timing) with larger spacing can suggest a heavier character, as it implies more force is needed to move quickly. Conversely, more frames with smaller spacing can make a character appear lighter, as less force is required to achieve the same speed.