[targonrotts]

how old is your dog?
i wouldn't do weights of any kind or jumping until at least 12 months to allow the growth plates to properly grow.
what i did for weight training, was pulling.
a car tire on ropes attached to a weight pull harness, and have dog pull tire to help develop the front and back muscles and built stamina.
carting is also a good exercise.
as to actually put weights on dog, no.
roadworking on field,swimming,treadmill,ball playing,flyball,agility and hurdle training are also other methods i have tried.