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 3

Laryngeal muscle blood oxygen saturation of participants before treatment.

Index	Group	n		F
Suprahyoid muscles blood oxygen saturation (%)	Test group	35	73.46 ± 3.49	209.287	<0.001
	Control group 1	32	73.00 ± 3.21
	Control group 2	34	73.18 ± 3.39
	Healthy group	38	90.37 ± 4.14^a,b,c
Infrahyoid muscles blood oxygen saturation (%)	Test group	35	64.89 ± 2.61	613.982	<0.001
	Control group 1	32	64.31 ± 2.89
	Control group 2	34	64.29 ± 2.80
	Healthy group	38	91.62 ± 4.47^a,b,c

Note. The SO₂ of the superior and inferior hyoid muscles in the pretreatment MTD groups was significantly lower than the SO₂ in the normal group (). Compared with the test group, ; compared with control group 1, ; compared with the normal group,