Simplify the following text for a Grade 10 native English-speaking person.
Original: Patients with the leg onset form may experience awkwardness when walking or running or notice that they are tripping or stumbling , often with a `` dropped foot '' which drags gently along the ground .
Simplified: In some of these cases , symptoms first affect one of the legs , and patients have awkwardness when walking or running or they notice that they are tripping or stumbling more often .