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http://europepmc.org/abstract/med/11774068
Suggests otherwise, although is triantelope based and measured with HR.
Sure there was a recent study showing that running improved cycling performance but not vice versa but I couldn't find it in a quick Google.
Of course cycling is best for improving cycling performance, but running (with good form....) is much better than nothing (or swimming it would appear)
This also anecdotally agrees with a few very fast runners who I know of who have switched to cycling and quickly got VERY good.
danb-
Yeah, you get a good CV system with running but I don't think running helps cycling as such. Those runners would've been very good cyclists if they did the same training just on the bike. I believe the runners that switched to cycling would be less fast if they continued running while racing bikes. Specificity innit.
hippy
Running won't help cycling at all. It will make you worse.
Get one of those buggys that attached to the bike and put her in that?
Or get a tubro and turbo with her in eye sight.
Don't run. If you want to improve at cycling ,cycle.
1h turbo is perfect. You don't need to do longer.