Correlation between handgrip strength and intrinsic capacity among the rural empty-nested elderly in Shanyang Town,Baoying County,Jiangsu Province
Objective To explore the correlation of handgrip strength with intrinsic capacity among rural elderly empty-nesters,and to provide a basis for early prediction of the risk of intrinsic capacity decline.Methods A multi-stage random sampling method was used to select 344 rural elderly empty-nesters in Shanyang Town,Baoying County,Jiangsu Province in March-August 2023.A cross-sectional study was performed,and indicators and data about intrinsic capacity and handgrip strength were collected.Excel 2013 and SPSS 27.0 software were employed to sort out and analyze the data.The relationship between intrinsic capacity and handgrip strength was analyzed using a multivariate logistic regression model and the linear trend test.Results The average age of the 344 rural elderly empty-nesters was(73.99±7.53)years old.The mean grip strength of the dominant hand and the non-dominant hand was(21.05±7.33)kg and(19.24±7.05)kg respectively,and the prevalence rate of intrinsic capacity decline was 79.65％.The rural elderly empty-nesters'two-handed grip strength was correlated with intrinsic capacity(both P＜0.05).After correcting for age and other factors,the score of intrinsic capacity was higher in the highest grip strength group than in the lowest grip strength group(OR for the grip strength of the dominant hand in males:2.304;OR for the grip strength of the dominant hand in females:2.780;OR for the grip strength of the non-dominant hand in males:2.229;OR for the grip strength of the non-dominant hand in females:2.945;all P＜0.05).After performing the linear trend test,we observed the same changing trends in the levels of intrinsic capacity and two-handed grip strength between rural empty-nesters of different sexes(Ptred＜0.05).Conclusion The rural empty-nesters'two-handed grip strength is associated with intrinsic capacity,and no gender differences are found.Grip strength can be used as a means for early identification and adjunctive screening of group at high risk of intrinsic capacity decline and assessment of the risk of reduced intrinsic capacity among the rural elderly empty-nesters.
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