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Struggling with whether to keep the Basset Lab (Bassador?) we're fostering.
I'm a little confused because is not the puropse of fostering to find the dog another home rather than keep the dog in the first Place?

That said the pace most walk with a basset is neither exercise for them or the dog, a stress reliever for the human, evironmental enrichment for the dog sure but not exercise. A dog would get more exercise for a 5 minute basset 500 round than most 20 minute walks. So consider carefull the actual purpose of the walk. IF it is exercise you might just find "usual activity - running" perfectly suitable for the dog but you may have to build up its endurance. the recommendation for running with dogs is on softer surfaces only ie not pavement however studies on humans have nor found increased knee damage from running on harder surfaces versus softer ones so it is probably more of a nyth than actual science for that recommendation

Running injury exercises - myths about running injuries

hard surfaces cause more injuries?
Some other myths are equally indestructible. For example, a common belief is that running on very hard surfaces (like concrete, cold Tarmac, terrazzo, etc) creates a higher risk of injury, compared to running on relatively soft terrain. Scientific research actually provides little support for this view (Feehery, RV Jr, 'The Bio-mechanics of Running on Different Surfaces,' Clin Podiatr Med Surg, Vol. 3(4), pp. 649-659, October 1986). In fact, the ground-reaction forces at the foot and the shock transmitted through the body all the way up to the head when running on different surfaces varies very little as one moves from very soft to very hard surfaces. Many researchers believe (and there is experimental support for the idea) that runners are subconsciously able to adjust the stiffnesses of their legs just prior to footstrike based upon their perceptions of the hardness of a surface. When moving along on hard surfaces, runners create 'soft' legs, and when they travel across soft surfaces they do so with 'stiff' ones. As a result, impact forces on the legs are similar, despite the wide differences in surface hardness.

'All running animals coordinate the actions of the muscles, tendons and ligaments in their legs so that the overall leg behaves like a single, mechanical spring during ground contact'

In an extremely interesting recent study (Ferris, DP, Louie, M, and Farley, CT, 'Running in the Real World: Adjusting Leg Stiffness for Different Surfaces,' Proc R Soc Lond B Biol Sci, Vol. 265 (1400), pp. 989-994, June 7, 1998), researchers at the University of California at Berkeley hypothesised that all running animals coordinate the actions of the muscles, tendons, and ligaments in their legs so that the overall leg behaves like a single, mechanical spring during ground contact. The Berkeley data suggests that the stiffness of this 'leg spring' is somewhat independent of running speed but is highly dependent on running surface, changing dramatically as an animal encounters surfaces of different stiffnesses. If this were not true, peak ground-reaction force and ground contact time (footstrike time) would change dramatically as an animal ran on different surfaces, but instead they remain fairly constant.
 
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