Elitetrack: Sport Training & Conditioning

Does anyone know or make use of a “set” breathing pattern for either or both indoor and outdoor sprint hurdle events (60mH/100mH/110mH)?
Just looking at Seagrave Race Model but for flat, short sprints yet seem to recall seeing a variation for hurdling, just not sure where or if it has value.

McFarlane has a model in his book on sprint hurdle breathing.
With that being said I specifically asked a top level coach (he has coached Olympic hurdlers) this question and he said that he has found it impossible for the athlete to use a specific breathing pattern while hurdling.