Wish I had read this earlier, although "Increased recovery time due to the effort. You will need at least 2-3 days of easy running after a hard downhill effort. So, before you plan a hard downhill session, make sure you are not compromising your overall training volume in order to do so." may have pushed me off the workout. My recovery would have been 4-5 days based on experience. The main thing I learned was that the effect lasts 30-45 days. I was relying on races and training from Feb to April to be enough.Thanks gb, appreciate you putting the thought and time into this, some good lessons in there. The "little" things like being sure your gear set-up works can be so huge when you're going to be out there for 30 hours, as that stuff can at best be an annoyance for hours and at worst end your race.
You know this, but blown quads and GI distress are the two biggest reasons for DNFs, and since you have an iron gut just make sure you address those quads. Keep in mind for next time (because there will be a next time) that it doesn't take much downhill work to really get the protective effect you need. Jason Koop has a great article on it, but the important thing to keep in mind is you only need one or two sessions to see huge improvements. From the article, "The effect is so strong that one bout of eccentric training can have a protective effect of subsequent bouts performed weeks later. The aptly term coined for this effect is the ‘repeated effect’, meaning a single bout is enough to provide a lasting protective effect." He also mentions you will need 1-2 days of easy running afterward, but it's worth it. I've also seen research that indicates the protective effect lasts for quite some time as well, so you can (and should) be doing downhill work 30-45 days out from the race.
The weight/body comp thing is my biggest issue, too. My body just wants to be 195-200, but it needs to be 175-180 for my best chance to be succesful on race day. I know that the key is getting down to at least close to race weight early in the cycle, but I've struggled to be able to do that. Carrying all that extra weight not only screws your running economy by diminishing your weight/power ratio, it absolutely makes running in the heat tougher. Double whammy.
Well that rules. That's how I know there's going to be a next time.
Really appreciate you sharing this info.