A fur­ther ex­ample for the eco­nomi­cal im­por­tance of har­monic fre­quency and phase co-or­di­na­tion is the ratio of heart rhythm and in­her­ent os­cil­la­tion of the ar­te­rial sys­tem. The ejec­tion of blood out of the heart trig­gers rhyth­mic os­cil­la­tion of the elas­tic ar­te­rial sys­tem which is nor­mally dou­ble as fast as the heart rhythm. With a whole num­bered co-or­di­na­tion, the ejec­tion of blood from the heart al­ways hits the same phase of the ar­te­rial pres­sure varia­tions, where­by up to 30% heart en­ergy can be saved.

Il­lus­tra­tion 16 shows fre­quency dis­tri­bu­tions of the quo­tient from heart pe­ri­odic du­ra­tion and ar­te­rial ba­sic os­cil­la­tion du­ra­tion. The nor­mal whole num­bered ratio of 2:1 is pre­ferred by healthy peo­ple, more strictly even by trained sports peo­ple whose cir­cu­la­tion is more eco­nomi­cally ad­justed. With a slower heart rate the ratio of 3:1 can also be ad­justed. In pa­tients with func­tional car­diac-vas­cu­lar dis­or­ders with nega­tive or­ganic re­sults, how­ever, the whole num­bered-har­monic co-or­di­na­tion was com­pletely miss­ing (il­lus­tra­tion 16, be­low).