Hi folks,
We often see the 'experts' shouting down any suggestion that pedalling style is important, referring to those experimental studies that failed to find a link between style and gross efficiency. Without going through that debate again, I think that it is significant that, despite what the 'experts' say, many riders are convinced that a 'good' style helps them to delay the onset of fatigue and so forth and most professionals do have a very 'smooth' pedalling style. This makes me suspect that the 'experts', who after all not that long ago were telling everyone that elevated levels of blood lactate 'caused' fatigue, are missing something.
I recently read the following paper:
Fatigue is a brain-derived emotion that regulates the exercise behavior to ensure the protection of whole body homeostasis
http://www.frontiersin.org/striated_muscle_physiology/10.3389/fphys.2012.00082/abstract
This paper essentially argues that fatigue is not a physical state at all, rather a neural 'Central Governor', acting on multiple cues, triggers a feeling of fatigue in order to maintain homeostasis and prevent damage. In reality, in a trained person at least, the body is actually capable of much higher levels of work, if only this 'Central Governor' could somehow be over-ridden. (Which is exactly what drugs like amphetamine and caffeine do.)
Relating this to the old 'pedalling efficiency / style debate, it strikes me that one factor that might contribute to the 'emotion' of fatigue is how well a rider is able to maintain a 'smooth', 'coordinated' pedalling style. (Or perhaps, whatever style feels the 'best' for them.)
Studies show that, when riding at the limit, the style of even the best rider tends to break down. It seems quite possible that this break-down in style would create neuro-muscular cues that the 'Central Governor' would, along with multiple other cues, interpret as signalling a high-workload, and in turn the potential onset of a state where homeostasis is threatened. It also seems possible that the longer a rider is able to maintain a smooth and coordinated pedalling style, the longer they would be able to suppress these cues.
In short, it seems possible that you feel fatigued, at least in part, because of a failure in the ability to maintain a 'smooth' pedalling style, not because this directly influences gross efficiency but because of the influence this has on the functioning of the 'Central Governor'. To look at this a slightly different way, when your pedalling becomes 'ragged' due to having to maintain high work load, an awareness of this contributes to a feeling of 'fatigue'.
Doubtless the 'experts' would cling to the old view that it is the fatigue that is the limiting factor here and the breakdown in style is just a symptom of this. However, as that paper above argues, fatigue as a genuine physical state may only occur at a level of work way beyond the point where the rider actually feels fatigued.
Just an idea!
We often see the 'experts' shouting down any suggestion that pedalling style is important, referring to those experimental studies that failed to find a link between style and gross efficiency. Without going through that debate again, I think that it is significant that, despite what the 'experts' say, many riders are convinced that a 'good' style helps them to delay the onset of fatigue and so forth and most professionals do have a very 'smooth' pedalling style. This makes me suspect that the 'experts', who after all not that long ago were telling everyone that elevated levels of blood lactate 'caused' fatigue, are missing something.
I recently read the following paper:
Fatigue is a brain-derived emotion that regulates the exercise behavior to ensure the protection of whole body homeostasis
http://www.frontiersin.org/striated_muscle_physiology/10.3389/fphys.2012.00082/abstract
This paper essentially argues that fatigue is not a physical state at all, rather a neural 'Central Governor', acting on multiple cues, triggers a feeling of fatigue in order to maintain homeostasis and prevent damage. In reality, in a trained person at least, the body is actually capable of much higher levels of work, if only this 'Central Governor' could somehow be over-ridden. (Which is exactly what drugs like amphetamine and caffeine do.)
Relating this to the old 'pedalling efficiency / style debate, it strikes me that one factor that might contribute to the 'emotion' of fatigue is how well a rider is able to maintain a 'smooth', 'coordinated' pedalling style. (Or perhaps, whatever style feels the 'best' for them.)
Studies show that, when riding at the limit, the style of even the best rider tends to break down. It seems quite possible that this break-down in style would create neuro-muscular cues that the 'Central Governor' would, along with multiple other cues, interpret as signalling a high-workload, and in turn the potential onset of a state where homeostasis is threatened. It also seems possible that the longer a rider is able to maintain a smooth and coordinated pedalling style, the longer they would be able to suppress these cues.
In short, it seems possible that you feel fatigued, at least in part, because of a failure in the ability to maintain a 'smooth' pedalling style, not because this directly influences gross efficiency but because of the influence this has on the functioning of the 'Central Governor'. To look at this a slightly different way, when your pedalling becomes 'ragged' due to having to maintain high work load, an awareness of this contributes to a feeling of 'fatigue'.
Doubtless the 'experts' would cling to the old view that it is the fatigue that is the limiting factor here and the breakdown in style is just a symptom of this. However, as that paper above argues, fatigue as a genuine physical state may only occur at a level of work way beyond the point where the rider actually feels fatigued.
Just an idea!