Acupuncture Combined with Voice Training Improved Voice Function in Patients with Primary Muscular Tension Dysphonia (MTD): A Randomized, Three-Armed, Open-Label Clinical Trial

Table 6

Comparison of the pre- and posttreatment blood oxygen saturation of laryngeal muscles in the three groups (%, ).

Group	Course	Sample	Suprahyoid muscles	Infrahyoid muscles
Test	Before treatment	35	73.46 ± 3.49	64.89 ± 2.61
	After treatment	35	81.06 ± 3.26	72.46 ± 2.31
Control group 1	Before treatment	32	73.00 ± 3.21	64.31 ± 2.89
	After treatment	32	80.31 ± 3.24	71.22 ± 2.27
Control group 2	Before treatment	34	73.18 ± 3.39	64.29 ± 2.80
	After treatment	34	73.94 ± 3.16	65.15 ± 3.29

Note. Compared with the pretreatment group, ; compared with the test group, ; compared with control group 1,