Effects of a swallowing exercise education program on dysphagia-specific health-related quality of life in oral cavity cancer patients post-treatment: a randomized controlled trial

Purpose: The purpose of this study was to evaluate the effects of a swallowing exercise education program (SEEP) on swallowing ability, depression, and dysphagia-specific health-related quality of life (QOL) in oral cavity cancer (OCC) patients. Methods: This was a prospective, randomized controlled study with two groups using a pre- and post-repeated measures design. A total of 76 participants were randomly assigned to an experimental group (n = 38) and a control group (n = 38). The experimental group participated in a SEEP and the control group received normal care. Patients were assessed at five time points: baseline assessment (T0) and then 1, 2, 3, and 6-months (T1, T2, T3, and T4) after participating in the SEEP or receiving normal care. Results: Patients in the experimental group had significantly greater emotional dysphagia QOL compared to those in the control group. In the experimental group, post-education (T4) depression was better than baseline (T0). For both groups, functional dysphagia QOL and physical dysphagia QOL were greatest at T0, decreased from T1 to T2, and slightly decreased at T3 and T4. There were no differences between the groups and within the groups with respect to dysphagia-specific health-related QOL, global dysphagia QOL, functional dysphagia QOL, and physical dysphagia QOL. Conclusions: The SEEP was effective in improving emotional dysphagia QOL during the initial 6 months after treatment of patients with OCC.