Lower protein intake mediates association between lower occlusal force and slower walking speed: From the septuagenarians, octogenarians, nonagenarians investigation with centenarians study

Tadashi Okada, Kazunori Ikebe, Ryosuke Kagawa, Chisato Inomata, Hajime Takeshita, Yasuyuki Gondo, Yoshiko Ishioka, Hitomi Okubo, Kei Kamide, Yukie Masui, Ryutaro Takahashi, Yasumichi Arai, William Murray Thomson, Yoshinobu Maeda

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Objectives To investigate the association between lower extremity motor function and occlusion in older adults and to examine the possibility of dietary intake of protein mediating the association. Design Cross-sectional, population-based study. Setting Urban and rural area in Japan. Participants Community-dwelling septuagenarians (N = 655) and octogenarians (N = 629). Measurements Information was collected on occlusal force, protein intake, grip strength, walking speed, sociodemographic characteristics, and medical history. Multivariable logistic regression analysis was used to investigate the association between walking speed, occlusal force, and protein intake, and structural equation modeling analysis and mediation analysis were performed to investigate the validity of the hypothesized model and identify the indirect effect of protein intake in occlusal force and walking speed. Results The proportion of participants whose walking speed was 0.8 m/s or slower (slow walking speed) was 27.7%. Logistic regression analyses showed that slower walking speed was associated with occlusal force (odds ratio = 1.57, P =.001) after adjusting for medical history, body mass index, grip strength, and protein intake. The fit of the hypothesized model that walking speed was associated with occlusal force through protein intake was good, and the indirect effect was significant. Conclusion Slower walking speed was associated with lower occlusal force. Lower protein intake mediated the association between walking speed and occlusal force. Maintaining occlusal force might prevent insufficient nutrition intake and further deterioration of motor function in older people.

Original languageEnglish
Pages (from-to)2382-2387
Number of pages6
JournalJournal of the American Geriatrics Society
Volume63
Issue number11
DOIs
Publication statusPublished - 2015 Nov

Keywords

  • elderly people
  • occlusal force
  • protein intake
  • walking speed

ASJC Scopus subject areas

  • Geriatrics and Gerontology

Fingerprint Dive into the research topics of 'Lower protein intake mediates association between lower occlusal force and slower walking speed: From the septuagenarians, octogenarians, nonagenarians investigation with centenarians study'. Together they form a unique fingerprint.

Cite this