"Rise and fall" ≠ sine wave theory
The need for distinction Recent discussions with martial arts colleagues on the Traditional Fighting Arts Forum have made me aware of the need to enunciate the difference between using "rise" or "fall" in your martial techniques and the "sine wave" theory of ITF taekwondo . "Rise and fall" "Rising and falling" in martial arts techniques not only makes sense, but it is necessarily built into most human movement. The problem arises when one attempts to become dogmatic about using a rise or fall. Rising and falling should occur naturally; movements should not be forced into a "rise/fall" mould. And as with " koshi " (using the hips to add force), while rising or falling can be used to add force to a blow, one should not focus too strongly on this aspect. There are multiple ways of generating greater force, and all of them are both valid and necessary. Not one of them is, of itself, some kind of panacea. And all of t...