You have subforms:
Subform Fitness Eval 
Subform Functional Movement

But it sounds like you are adding records in the main forms:
FitnessEvaluation Form
Functional Movement Form

I don't know how you are using these forms, but once you create subforms, you would usually use the Parent Profile form to add/delete subform records.  You might rarely use the FE or FM forms.  Their main purpose was design to be used as a subform.

I make it a practice to have a unique value in every record, in parent and in subforms also.
I also make it a practice to add a Key field to my subforms even though Sesesame does not require it.  On the subform I would include a ReadOnly,Invisible element that contains the unique ID of the parent form (Profile).  This helps to manually match subform records to parents.  This Parent ID is added to the subform record when it created from the Parent Form.

Structure:
FitEval

• Profile
• FitnessEvaluation
• FunctionalMovement

FitEvalFrm

• subform FitnessEval

AdditionalForms

• subform functional Movement

Because your forms Profile, FitnessEvaluation and FunctionalMovement are all in the same database (FitEval), they all have the same records. To avoid the duplicate record problem that you are seeing, you can create seperate databases for each of your forms. Or, another option is to use Search Update to retrieve the record for the person that you are adding a test for. Using Search Update will make the change to the existing record and will not create a new record.
If you have any more questions about this, please let us know.

Ben