Your client’s strategic, protective compensation patterns are a power leak and costing them greatly in efficiency and energy. There is a greater cost to compensation other than pain avoidance and protection. The cost is a loss in energy and efficiency as these numbers elude to. Think of how many people walking amongst us are in protective pain patterns causing a deep energy suck on the system. So, do your client and yourself a favor… . if you are instructing your clients on how to fix their arm swing on a local (arm/upper quarter) level, please stop. Please don’t use your gait analysis software to coach out arm swing changes, you are missing the boat if you are doing that. Arm swing aberrancies are quite often a manifestation of a greater global problem. Arm swing is largely a passive pendulum effect. Changes in the pendulum are often a sign of something bigger. This takes deep knowledge.