Table I.

Sequence of exercises used in quantitative fit testing

Exercises (duration)	Method
1. Normal breathing (60 s)	Remain still in a normal standing position.
	Breathe as usual.
2. Deep breathing (60 s)	Remain still in a normal standing position.
	Take long deep breaths as if working hard.
3. Side-to-side head movement (60 s)	Remain still in a normal standing position.
	Breathe normally while slowly turning the head from side to side between the extreme positions on each side.
	Take several seconds from left to right of each cycle.
	Pause momentarily at each side to take a breath.
4. Up-and-down head movement (60 s)	Remain still in a normal standing position.
	Breathe normally while slowly alternating between looking up at the ceiling and down at the floor.
	Take several seconds from up and down of each cycle.
5. Talking (60 s)	Remain still in a normal standing position.
	Read a prepared paragraph slowly and loud enough so as to be heard clearly by the research assistant.
6. Grimacing (15 s)	Grimace by smiling and/or frowning to try to create a leak in the respirator face seal.
7. Bending over (60 s)	Keep standing position.
	Bend at the waist as if touching the toes.
	Breathe normally.
8. Normal breathing (60 s)	Keep standing position.
	Breathe as usual.

Adapted from TSI Incorporated.¹⁸