Quote Originally Posted by Marco View Post
Glad to hear you've discovered this; running is a higher cadence activity, (you can't run well at low cadence, but you can pedal a bike as slowly as you want), so I would expect spinning the pedals to feel better for a runner. It saves your fast twitch muscles, too
Is this an explanation for why I, a dedicated grinder up hills at a low cadence on my bike, am finding it ever more difficult to keep a running gait going when going uphill in fell races?

Actually, no it isn't. In my younger days, when I was rather good at running up steep hills, I was even more dedicated to grinding up hills in a high gear at a low cadence on my bike. In fact, in my teenage years, I was under the impression that the object was to stay in the highest gear possible when going up any gradient. And when I did change down to the 49-inch bottom gear on my Triumph Roadster, I could get up 1-in-8 hills. According to the principle that "What doesn't kill you, makes you stronger", this may be why I have had very few problems with my knees in all my years of fell running.