Dogs typically love hands, with the exception of those who are abused. Dogs love our hands because hands play with, feed them, scratch their bellies and are used in most communication efforts.
Clients that have asked me fore help with jumping dogs or overly excited dogs are usually making the mistake of telling the dog to "jump" or "come get me" by what they do with their hands. That's right, reaching down to stop the dog from jumping is actually communicating just the opposite.
If a person lifts their hands to their chest to get away from the dog, the dog believes that means "jump up to get to my hands that you love so much". If a dog jumps up and a person tries to push the dog down or push the dog away with his hands, the dog interprets that as "try harder to get those wonderful hands that are playing with me. "If I keep doing this then they'll give me their wonderful hands! Hands, hands, hands!"
Dogs who are well-cared for and excercised daily will respond quickly to hands that stay limp at your side while you ignore the dog until such time as it settles down and you decided you are ready to play or pet.
Begin teaching your dog by waiting for to have a session after a period of exercise. I always tell clients to have recess before class. That way the dog is less likely to be overly excitable and will probably pay better attention.
Walk towards your dog and when the dog is sitting or standing calmly, praise him and reach down to pet him. When the dog jumps up, stop. When the dog is settled then do it again always praising the right behavior and ignoring the unwanted responses.
Remember; dogs love your hands, so use them to condition and train the dog with consistency and common sense.