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Published on: July 5, 2017
[Relationship between the swallowing function and jaw-opening muscle strength in elderly cerebrovascular disease
Yoshinobu Nakamura1, Miwa Matsuyama2, Tomoya Omura3
1Komatsushima Hospital Rehabilitation Department.
Aim:
In this study, we aimed to clarify the relationship between the swallowing function and the jaw-opening force after cerebrovascular disease.
Methods:
Elderly patients with a history of cerebrovascular disease with swallowing disability were enrolled in the present study. The swallowing function was evaluated using the Dysphagia Severity Scale (DSS), and the jaw-opening force was measured using Jaw-Opening Sthenometer (TK2014). The correlation between the DSS and jaw-opening force was analyzed using Spearman's correlation coefficient. Patients were also classified into three groups according to the DSS: normal, dysphagia, and aspiration groups. The jaw-opening forces of the three groups were compared using the Kruskal-Wallis test.
Results:
Fifty-two patients (27 women, average age 78.8±8.2 years) were recruited. A significant negative correlation was found between the patient age and jaw-opening force in all subjects (r=-0.362, p=0.008) as well as in men (r=-0.548, p=0.005). A significant positive correlation was found between the DSS and jaw-opening force in all subjects (r=0.560, p=0.000) and in both men (r=0.636, p=0.001) and women (r=0.587, p=0.001). The jaw-opening force of the aspiration group was significantly lower than that of the normal group in all subjects (p=0.006), as well as in men (p=0.024) and women (p=0.015).
Conclusions:
The DSS and jaw-opening force may have a significant positive correlation. Furthermore, it was shown that the jaw-opening force of the aspiration group was significantly lower than that of the normal-swallowing group.
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