Association between oral health-related factors and grip strength using the 6th Korea National Health and Nutrition Examination Survey data

국민건강영양조사 제6기 자료를 활용한 구강건강관련요소와 악력과의 연관성

  • Kang, Hyun-Kyung (Department of Dental Hygiene, College of Health and Welfare Silla University)
  • 강현경 (신라대학교 치위생학과)
  • Received : 2019.09.02
  • Accepted : 2019.09.26
  • Published : 2019.10.30


Objectives: Grip strength is a measure for assessing overall muscle strength, muscle mass, and nutritional status, and is a useful tool for early examination of a person's general health. Thus, this study analyzed the association between oral health-related factors and grip strength, using the 6th Korea National Health and Nutrition Examination Survey (KNHANES) data. Methods: Data were analyzed using the IBM SPSS version 25.0 (IBM Co., Armonk, NY, USA) software with a complex sampling analysis of stratified and clustered variables, all with weighted values, applied for every analysis conducted. From the 6th KNHANES data, a total of 26,101 people were selected as the study population. A complex sample generalized linear model analysis was performed for participants' sociodemographic characteristics, health status, use of oral care products, and factors such as adult mastication and speaking habits. Results: Grip strength was found to be higher among men compared to women. Grip strength was the highest in the 20-39 year old group. Furthermore, grip strength was statistically significantly higher among married and employed individuals, and in the right hand (p<0.001). Grip strength was statistically significantly higher among people who perceived themselves to have good health and among those who did not have health-related problems in the past two weeks (p<0.001). It was also higher among those who used interdental brushes and electronic toothbrushes (p<0.001), but decreased with greater discomfort in mastication and speaking among adults (p<0.05). Conclusions: Grip strength was found to be associated with oral health-related factors and therefore, these could be helpful tools in evaluating both general and subjective health statuses. In general, oral care products are small in size with oral care involving the use of hands and certain precise motions and actions to remove foreign substances in the oral cavity. As shown in the findings, grip strength declines with increased age and as a result, the use of oral care products should be strongly recommended in order to promote better general health.


  1. Iannuzzi-Sucich M, Prestwood KM, Kenny AM. Prevalence of sarcopenia and predictors of skeletal muscle mass in healthy, older men and women. Gerontol A Biol Sci Med Sci 2002;57(12):M772-7.
  2. Oh YH, Moon JH, Kong MH, Oh Bj, Kim HJ. The association between hand grip strength and health-related quality of life in Korean adults. Korean J Sports Med 2017;35(2):103-11.
  3. Birman MV, Solomon GS, Vender MI. Functional capacity evaluation in hand surgery. J Hand Surg Am 2016;41(1):133-4.
  4. Gatz M, Reynolds CA, Finkel D, Pedersen NL, Walters E. Dementia in swedish twins: Predicting incident cases. Behav Genet 2010;40(6):768-75.
  5. Stenholm S, Tiainen K, Rantanen T, Sainio P, Heliovaara M, Impivaara O, et al. Longterm determinants of muscle strength decline: Prospective evidence from the 22-year mini-Finland follow-up survey. J Am Geriatr Soc 2012;60(1):77-85.
  6. Lee JA. Relationship between grip strength and prevalence of hypertension in Korean adults: the sixth Korea national health and nutrition examination survey (2015). A J Kinesiol 2017;19(3):53-60.
  7. Baek SH, Shin JE. Association between grip strength and health-related quality of life in elderly Korean. KSSS 2019;28(3):703-12.
  8. Jebsen RH, Taylor N, Trieschmann RB, Trotter MJ, Howard LA. An objective and standardized test of hand function. Arch Phys Med Rehabil 1969;50(6):311-9.
  9. Kim HY. The effects of hand function program on hand function and instrumental activities of daily living. OTAD 2008;2(2):1-12.
  10. Back JU, Park MH. Ability for chewing a social activity and connection with the life function of a senior citizen. J Kor Aca Den Tec 2007;29(2):87-103.
  11. Im IJ, Lee HJ, Kim HH. The relationship among subjective chewing function, chewingrelated quality of life, and depression: a structural equation modeling approach. JRR 2019;23(2):107-23.
  12. Kim YA, Kim JY, So WY, Shin SH, Kim HS. The effects of physical character and frailty by the level of grip strength in elderly men. KSW 2018;13(1):433-42.
  13. Lee OH. Relationship between fat-free mass and grip strength, nutrient intakes, exercise behavior in middle- and old-aged women. J Nutri Health 2001;34(4):449-57.
  14. Shin HS, Ahn YS, Lim DS. Association between the number of existing permanent teeth and chronic obstructive pulmonary disease. J Dent Hyg Sci 2016;16(3):217-24.
  15. Lee SG, Park SK. The effects of a video strength exercise on grip strength, balance, tug in the frail elderly women. KSPM 2013;8(1):91-8.
  16. No JK. Evaluation of dietary intake and exercise in the elderly according to hand grip strength. Korean J Obes 2013;22(4):243-50.
  17. Oh BT, Hwang YS, Lee JY, Park SK, Hong SW, Suh YS, et al. Factors related with hand grip strength in Korean elderly. Korean J Clin Geri 2017;18(1):22-9.
  18. Chun GS. A study about the alteration of grasping power wearing the mouth guard. Kor J OMP 2016;40(1):721-6.
  19. Yoo JH, Lee MY, Lee SY. Comparison analysis of before and after scaling training on grip and pinch strength. J Korean Soc Dent Hyg 2013;13(1):114-21.
  20. Mathiowetz V. Comparison of rolyan and jamar dynamometers for measuring grip strength. Occup Ther Int 2002;9(3):201-9.
  21. Park CY, Yim HW, Koo JW, Ahn BY, Baag YM, Lee KS. Normative data of grip and pinch strength for screening of cumulative trauma disorders. Korean J Occup Med 1998;10(3):362-78.
  22. Tichet J, Vol S, Goxe D, Salle A, Berrut G, Ritz P. Prevalence of sarcopenia in the french senior population. J Nutr Health Aging 2008;12(3):202-6.
  23. Lee DC, Jang KP. An analysis of grip strength for Korean adults. J Ergon Soc Kor 1997;16(1):73-83.