표 2. | Table 2. 연구 참여자의 특성 | Participants' characteristics

Group	n	Age (years)	Sex (M/F)
Cheek inflation	4	23.8±1.7	2/2
No cheek inflation	4	25.0±2.4	3/1
Total	8	24.4±2.1	5/3

M, male; F, female.