SkipdiverJohn
Deplorable Brexiteer
- Location
- London
I honestly think that each of us has a natural cadence and will be most efficient close to that, unless we concentrate on training otherwise.
Of course we have a natural cadence. We have a natural speed of doing all sorts of activities. Why do different people walk at different speeds? Why do people climb stairs at a certain rate, not either slower or faster?
Evolution and survival over many thousands of years has made the human body very good at conserving energy by optimising it's work rate for maximum overall efficiency in the conversion of food into motion.
Spinning and grinding can be defined as cadences at which your body becomes uncomfortable, either with the amount of energy you are expending simply pumping your legs up and down, or the excessive loadings you are putting on your muscles and joints. The exact speed/load thresholds are unique to each rider so cannot ever be set in stone. Every speed/load combination in between those extremes is simply normal pedalling, neither spinning or grinding.