Frequently Vs Frequent: adverbial form or adjectival form?

So normally adjectives like frequent modify a noun or a pronoun, whereas adverbs like frequently modify verbs or adjectives.

However, in this sentence both options seem fine to me but I couldn't tell which form is more appropriate.

Sexual Risk Reduction program is one of the .... implemented programs in college campuses...

Solution 1:

Sexual Risk Reduction program is one of the frequently implemented programs in college campuses.

is the only correct one.

"implemented" is a past participle, a verbal form, even though here it's used attributively.

Now, let's think about the meaning of:

frequent, implemented program = program that is frequent and is implemented [kind of strange]

frequently implemented program = program that is implemented frequently (in a frequent manner) [makes sense]

Also, search for such combinations at Google Books (not vanilla Google):

"the frequent implemented" 0 results

"the frequently implemented" About 51 results

Thus the 2nd clearly takes it from this point of view too.

Still Frequently though it should either read "most frequently", or perhaps, to keep it vaguer,

Sexual Risk Reduction programs are a frequently implemented program in college campuses...

or, most concise…

Sexual Risk Reduction programs are frequently implemented in college campuses...