I agree. I would love to see the research backing this. Most I have seen presented was entirely rooted within fiction and presented in a roleplay format.
Further, the idea that space is curved is also somewhat rooted in theoretical science. Just as all of the "laws" of nature. Changing attributes, such as location, is not a terribly simple thing or we would have developed teleportation as a means of locomotion before we learned to walk. The simple fact is that walking (and combustion, spaceflight, etc) was developed first because bending physics to force yourself through space while ignoring the time factor requires vast amounts of energy and is intensely complex; walking and all mechanical/chemical means of locomotion are simply easier.
Within the same theory that states space is curved, it is still generally believed that energy remains constant. Therefore it would require the same amount of energy to walk 100 miles as it would to teleport there. An unfit person would likely teleport and immediately begin suffering from severe fatigue and exhaustion at best, particularly since it would have to happen in an instant rather than over time. Why? Because it would, in theory, require the same amount of energy for them to move there but it would be taken from the body all at once. Otherwise, teleporting minimal distances that would result in no such strain is, well, entirely pointless.
Anything is possible I suppose. So please provide a link to or site your research, or feel free to teleport onto my porch.