That depends on the level of skill needed, I'd say.

If the focus of the game is being able to perform jumps due to precise motions, then it's a platformer. An adventure game is mostly focused on puzzle solving (also, mostle story drive puzzles) and little to no motor skills are involved.

Portal, for example, while having puzzle solving it's not an adventure game, but a puzzle platformer - you can have the right solution but still be unskilled enough with controls that you can't manage to pass a level. Games in this jam shouldn't have this kind of mechanic - once you know how to solve something, there should be almost no skill required to perform the solution.