email hidden said:
While I consider myself a masher I am nowhere near 50 rpm. I don't
measure cadence, but I am frequently one or two cogs heavier a gear
than those I ride with. I am particularly guilty of mashing on hills.
And as I have previoulsy attributed my getting dropped in this
particular case to overdoing it in the early hills, I suppose my
mashing may have exacerbated things. While the overall effort level
for the super long ride may have been relatively low, there were quite
a number of kilometers with easily over 85% VOmax. More like 95%.
I supose easy flatland cruising with low cadence, and spin up hills.
Basically avoid high forces while keeping the pedals speed as low as
possible to avoid unnecessary costs of motion, but not at the expense
of high force generation. The exact opposite of what happens on my
fixed gear bike I do most of my training on!
But there are actually two problems. One is preserving fuel for super
long rides, the other is maximum power to not get dropped on hills for
shorter races where fuel is not an issue. Are the two mutually
exclusive? I wonder why my body homes in on mashing level cadences?
Cadence is a red herring. I read that somewhere.
IMO, mashing is a symptom of the disease rather than
a cause of it. The disease, of course, is not enough
power. The issue isn't always fuel, although by 410 km,
I suppose everything is about fuel. The mashing/spinning
issue, however, I think is about muscle fatigue caused
by recruiting more muscle for high pedal force effort.
Once you fatigue yourself, it doesn't matter how much
carbs and fat you have on board, you're going to blow.
Back to mashing as a symptom. IMO, people ride at lower
cadences because it is a little easier mentally and
requires slightly less aerobic effort, so it feels easier
in the short run, although it may lead to fatigue in the
long run. The problem is likely that you are mashing
up hills to keep up with the rest of the group, some of
whom are ahead of you on watts/kg. Riding a higher gear
and mashing hard is a convenient way to hang with these
people because the alternative is a greater aerobic
expenditure and that makes you (OK, me) feel like you
are breathing really hard and going to explode.
But doing this repetitively over a long ride means you'll
eventually fatigue and crack. Getting more comfortable
with spinning a lower gear may help with this, but it
is unlikely to cure the disease (Wattage Deficit Disorder).
Ben
RBR WDD Support Group