Ryuichiro Kobuchi1, Kentaro Okuno2, Takayuki Kusunoki2, Taro Inoue2, Kazuya Takahashi2. 1. Department of Geriatric Dentistry, Osaka Dental University Graduate School of Dentistry, 1-8, Kuzuhahanazono-cho, Hirakata-shi, Osaka, Japan, 573-1121. 2. Department of Geriatric Dentistry, Osaka Dental University, 1-8, Kuzuhahanazono-cho, Hirakata-shi, Osaka, Japan, 573-1121.
Abstract
BACKGROUND: Sarcopenia in the oral region, including the tongue, leads to declined swallowing function and dysphagia. Muscle mass and strength, and motor function in the oral region have not been examined together, and the relationship between generalized and oral sarcopenia remains unclear. OBJECTIVE(S): The purpose of this study is to clarify the relationship between generalized sarcopenia and oral sarcopenia in the elderly in order to facilitate the establishment of a method for assessing oral sarcopenia. METHODS: 54 elderly persons participated in this study. We examined the skeletal muscle mass index (SMI), grip strength (GS), and walking speed (WS) as the index of generalized sarcopenia, and the cross-sectional area of the geniohyoid muscle (CSG), tongue pressure (TP), and oral diadochokinesis (ODK) as the index of oral sarcopenia. RESULTS: We found a moderate correlation between CSG and SMI, a weak correlation between GS and TP, and a moderate correlation between WS and ODK. CSG, TP, and ODK were significantly smaller in the sarcopenia group than in the non-sarcopenia group. By Multiple regression analysis, SMI and TP were significantly associated with CSG. ODK, BMI, and CSG were significantly associated with TP. WS and SMI were significantly associated with ODK. CONCLUSION: CSG, TP, and ODK were confirmed as endpoints of oral sarcopenia. All endpoints of oral sarcopenia were influenced by those of generalized sarcopenia. This article is protected by copyright. All rights reserved.
BACKGROUND:Sarcopenia in the oral region, including the tongue, leads to declined swallowing function and dysphagia. Muscle mass and strength, and motor function in the oral region have not been examined together, and the relationship between generalized and oral sarcopenia remains unclear. OBJECTIVE(S): The purpose of this study is to clarify the relationship between generalized sarcopenia and oral sarcopenia in the elderly in order to facilitate the establishment of a method for assessing oral sarcopenia. METHODS: 54 elderly persons participated in this study. We examined the skeletal muscle mass index (SMI), grip strength (GS), and walking speed (WS) as the index of generalized sarcopenia, and the cross-sectional area of the geniohyoid muscle (CSG), tongue pressure (TP), and oral diadochokinesis (ODK) as the index of oral sarcopenia. RESULTS: We found a moderate correlation between CSG and SMI, a weak correlation between GS and TP, and a moderate correlation between WS and ODK. CSG, TP, and ODK were significantly smaller in the sarcopenia group than in the non-sarcopenia group. By Multiple regression analysis, SMI and TP were significantly associated with CSG. ODK, BMI, and CSG were significantly associated with TP. WS and SMI were significantly associated with ODK. CONCLUSION: CSG, TP, and ODK were confirmed as endpoints of oral sarcopenia. All endpoints of oral sarcopenia were influenced by those of generalized sarcopenia. This article is protected by copyright. All rights reserved.