Originally Posted by danfoz .
I did read the whole thread, and I would agree that adding deadlifts to an activity that already focuses on hip/glute extension, and the spinal erectors/multifidus groups of the lower back has potential for ovekill. I'm thinking more along the line of hip and trunk flexors - upper and lower ab and oblique work like leg raises, planks, pilates ball, etc, and to stretch, not strengthen those muscle groups which would primarily be involved with your deadlift, and which already spend considerable amounts of time contracting while on the bike. One could have a monumental deadlift and still have a weak overall core. Personally much of my core work focuses on one single exercise, the slow pushup, with focus on contracting in the midsection holding the top of the pushup for 10-20 secs. The value for the bike comes from the contracting abdominus, the value for the beach comes from the contracting pectoral, deltoid, and tricep.
Without work off the bike, I pretty much peter out at about a 5cm difference between saddle/handlebar. With active core work I get closer to 6-7cm and the capacity to hammer in the drops for significant portions of time. I'm not pushing this as dogma, but where I have not heard many corroborate the need for extra strength, I have not heard many refute the need for stronger abs and many including Friel and Carmichael advocate such work.