f(s) = 1337,8 s [6]  + 278,19 s [5]  – 517,39 s [4]  – 78,199 s [3]  + 93,419 s [2]  + 19,825 s + 1,64 wobei s die Hangneigung bezeichnet, und zwar gemessen in H [...] Energy cost of walking and running at extreme uphill and downhill slopes. Journal of Applied Physiology 93, 1039-1046. Münch, U., 2003: The Research Project „Archäoprognose Brandenburg" - Aims and Concepts