Kento Umeki1, Yutaka Watanabe2, Hirohiko Hirano3, Ayako Edahiro4, Yuki Ohara5, Hideyo Yoshida4, Shuichi Obuchi4, Hisashi Kawai4, Masaharu Murakami4, Daisuke Takagi6, Kazushige Ihara7, Kentaro Igarashi8, Masayasu Ito1, Yasuhiko Kawai1. 1. Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, 271-8587, Japan. 2. Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan; National Center for Geriatrics and Gerontology, Obu, Aichi, 474-8511, Japan. Electronic address: ywata@tmig.or.jp. 3. Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, 271-8587, Japan; Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan. 4. Tokyo Metropolitan Institute of Gerontology, Itabashi, Tokyo, 173-0015, Japan. 5. Department of Oral Health Care Education, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan. 6. Department of Critical Care Medicine and Dentistry, Division of Medically Compromised Geriatric Dentistry Graduate School of Dentistry, Kanagawa Dental University, Yokosuka, Kanagawa, 238-8580, Japan. 7. Department of Public Health, Toho University School of Medicine, Tokyo, 143-8540, Japan. 8. Nihon University Graduate School of Dentistry at Matsudo, Matsudo, Chiba, 271-8587, Japan.
Abstract
PURPOSE OF THE STUDY: Sarcopenia has been identified as a health hazard in elderly people. Although the association between sarcopenia and a decrease in masticatory function has been reported, the mechanism underlying this association has not been widely reported. Therefore, in order to elucidate the relationship between sarcopenia and masticatory function, we examined whether the masseter muscle thickness (MMT), which is a factor influencing masticatory function, in community-dwelling elders is associated with the appendicular skeletal muscle index (SMI), a diagnostic criterion for sarcopenia. MATERIALS AND METHODS: MMT was measured in 774 community-dwelling elders aged 65 years or older at resting state via ultrasonography, and SMI was measured with the bioelectrical impedance method. The relationships were investigated by calculating Pearson's correlation coefficients. Multiple regression analyses adjusted for age and sex, SMI, and oral-related items were performed to determine the association between these factors. RESULTS: There was a significant correlation between the MMT and the SMI. The multiple regression analysis indicated that SMI was significantly associated with a decrease in MMT. CONCLUSIONS: The reduction in whole-body skeletal muscle mass in sarcopenia may be involved in the reduction in MMT. Prevention of sarcopenia may be an important factor for maintaining masticatory function in the elderly.
PURPOSE OF THE STUDY: Sarcopenia has been identified as a health hazard in elderly people. Although the association between sarcopenia and a decrease in masticatory function has been reported, the mechanism underlying this association has not been widely reported. Therefore, in order to elucidate the relationship between sarcopenia and masticatory function, we examined whether the masseter muscle thickness (MMT), which is a factor influencing masticatory function, in community-dwelling elders is associated with the appendicular skeletal muscle index (SMI), a diagnostic criterion for sarcopenia. MATERIALS AND METHODS:MMT was measured in 774 community-dwelling elders aged 65 years or older at resting state via ultrasonography, and SMI was measured with the bioelectrical impedance method. The relationships were investigated by calculating Pearson's correlation coefficients. Multiple regression analyses adjusted for age and sex, SMI, and oral-related items were performed to determine the association between these factors. RESULTS: There was a significant correlation between the MMT and the SMI. The multiple regression analysis indicated that SMI was significantly associated with a decrease in MMT. CONCLUSIONS: The reduction in whole-body skeletal muscle mass in sarcopenia may be involved in the reduction in MMT. Prevention of sarcopenia may be an important factor for maintaining masticatory function in the elderly.
Authors: Mikel González-Fernández; Jose M Arbones-Mainar; Eduardo Ferrer-Lahuerta; Javier Perez-Nogueras; Antonio Serrano-Oliver; Elena Torres-Anoro; Alejandro Sanz-Paris Journal: Dysphagia Date: 2021-01-19 Impact factor: 2.733