Final answer:
A treatment log or medical record is essential for documenting treatments given and preventive techniques applied by athletic training staff, serving as a vital aspect of continuity of care and legal protection.
Step-by-step explanation:
The form that should be kept to record all treatments given or preventive/supportive techniques applied by the athletic training staff is typically known as a treatment log or medical record.
This documentation is crucial in ensuring continuity of care and legal protection for both the athlete and the healthcare professionals involved.
It should comprehensively document every interaction with athletes, including assessment of injuries, treatment administered, progress notes, and any preventive measures taken such as taping, bandaging, and bracing.