I came across this website for "Natural Posture Running". This running style is similar to Pose and Chi running with some subtle differences. The method has been developed by two runners in their 70s, so it shows you that this style is applicable to all ages.
Natural Posture Running emphasizes good posture and the familiar lean to harness the power of gravity. It also highlights relaxed arm and leg movements to mimic how children run. This method was tested at a university and was shown to improve running. The website is worth a look.
