Puberta prý odvádí myšlenkovou energii nežádoucí směry.

The main verb is odvádí, 3sg. present tense of the imperfective verb odvádět;

The subject should be in the nom. sg. form: puberta.

Odvádět takes a direct object and the default direct object is in the acc. case: myšlenkovou energii

Směr 'direction' is therefore neither the subject nor the object. it expresses itinerary, which should be expressed in the instrumental case. Note that the plural form is used.