Nobody take this as frank disagreement. I'm just gonna throw out some food-for-thought based on general principles of human training, and try to see how well that peg fits into dog training. As a matter of fact, one woman I trained applied these principles to her horses (she was into dressage) and from what I heard, she found great success. So anyway...
Beyond fatigue lies compensatory hypertrophy. Simply means to get stronger you have to get tired.
Agreed.
In police working dogs, conditioning is essential. Usually there is not warm-up period, and a dog goes from dead stop to full speed, exerting an enourmous amount of energy....Train like you expect to work. The last thing the handler can worry about, at that particular time, is the dog coming up lame.
I have to disagree with this. Where I do agree (and it's pretty self evident) that training should prepare for work, training should not BE like work. There are inherent, unforeseen risks to engaging in sport or work which should be AVOIDED during conditioning. After all, a primary criterion of any good fitness regiment is safety and
injury prevention. Now, going into a full sprint from a dead stop without warm-up produces enormous amounts of FORCE on the tissues. (Force=Mass x Acceleration). But it does NOT neccesarily mean more metabolic work (energy expenditure) has taken place. Force is the exclusive culprit in work/exercise related injuries. It may be cummulative, or it may be sudden. But all injuries have to do with movement. All movement, in the real world, involves force because all such movement neccesarily has to involve acceleration. However, force can be minimized while still incurring excercise benefit. Herein lies the invalidity of comparing physics and biology.
Metabolic work at the cellular level is that which produces physiological changes... NOT mechanical work (moving a given mass, a given distance in a given time). This is because muscles are not conscious. They do not care what is going on outside of themselves, nor do they care the intent of the contraction. One can, in fact, produce ZERO force, produce ZERO amount of mechanical work, yet still experience an extremely high degree of metabolic activity. Such a thing would be trying to lift the back end of a car. No newtons of force, no watts of work, no change outside of the muscles trying to lift it. But there would, in fact, be massive changes on the physiological level.
So, ideally, the safest, most productive mode of exercise would neccesarily mean low mechanical forces but high degrees of metabolic work (though having said that, low force does NOT mean low resistance). Metabolic work builds muscle. If our bodies are logical, and we have to assume they are, then metabolic work at the muscular level will neccesarily mean we'll see improvements in our muscle attachments, and the bones to which our muscles attach, and ultimatly the ligaments which bind bone. All can be strenghtened and prepared for real-life forces without actually experiencing such forces during conditioning.
We shouldn't condtion in an effort to purly build muscle, but train with a sense of increasing stamina.
Building muscle does neccesarily mean one is increasing stamina. Progressive overload training means that any given task short of training intensity will be easier. And since intensity is always increasing incrementally, one can expect that given task to become increasingly easier...less intense.
So, in terms of practical application, if one expects a dog to perform his mechanical duties primarily on flat ground, it would seem to make sense that training him against high resistance (say, against gravity up steep hills, or perhaps pulling weight) while still being able to minimize dangerous forces (quick starts without warm-ups) whilst still SAFELY preparing for them, would be the best way to go.
Another reason for this is to avoid chronic forces with cummulativly chip away one's joints. Of course, they can't be avoided. The dog's gotta walk and play regularly, but I don't see the sense in contributing to the problem in a venue which is supposed to good for the dog's body. Short bouts of intense metabolic work, followed by sufficient rest, is DEFINITLY a joint saver.
What I am very glad to see is the recognition of the importance of REST. For some reason this is beyond most humans as it applies to themselves.
Thoughts?