English to German Medical Medical (general) Clinical trial - Doctor's instructions and questions to patient/subject of the clinical trial

Hi,

This is a rush job. I am thus unable to research this. The following change the end customer made to my translation does not seem quite right to me. Or is it correct after all?

EN:
How do they mobilise for 10 metres?
Ask: Would you usually need a walking aid or someone to help you to walk about 10 metres/33 feet?
If the patient uses different aids depending upon the environment they are in, they should be asked which aid they usually use for this distance. If still unsure, the aid used during observation of the last item should be taken. Moderate assistance from one person holding the patient’s arm or hand is considered as ***unilateral*** support.

DE:
Moderate Unterstützung durch eine Person, die den Arm oder die Hand des Patienten hält, gilt als ***einseitige*** Unterstützung.

Please provide medical translation-related feedback on such end-customer change to my previous translation with a focus on putting the right words there. This is PAID work (viz. a somewhat more intricate version of galley proofing my amended translation), not a complaint.

Cheers,