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ORIGINAL RESEARCH article
Front. Public Health
Sec. Aging and Public Health
Volume 12 - 2024 |
doi: 10.3389/fpubh.2024.1417660
Quantitative relationship between grip strength and quality of life in the elderly based on a restricted cubic spline model
Provisionally accepted- Beijing Sport University, Beijing, China
Background: Grip strength have been showed diverse associations with quality of life for the elderly population in the literature, still there is lack of evidence of the threshold value of grip strength for maintaining good quality of life in older adults. The purpose of this study was to study the dose-effect relationship between grip strength and quality of life in the elderly, and to explore the factors affecting quality of life in the elderly, so as to provide effective theoretical basis for realizing healthy aging.Methods: A total of 105 elderly people over 60 years old were selected from 3 communities in Beijing. Grip strength was measured by hand dynamometer apparatus and quality of life was assessed by 36-item Short-Form (SF-36). On the basis of controlling confounding factors, the dose-effect relationship between grip strength and quality of life was analyzed with the restricted cubic spline model.The results showed that there was a dose-effect relationship between grip strength and physical component summary (PCS)(P<0.01). However, grip strength was not significantly associated with mental component summary (MCS) (P>0.05). The threshold value of grip strength for male and female is 34.75 kg and 23.2 kg, for normal weight group and overweight and obesity group is 24.82 kg and 29.00 kg, for 60-69, 70-79, 80+ years group is 24.88 kg, 23.37 kg and 22.97 kg respectively. When the grip strength value is lower than the threshold value, the increase of grip strength was related to significant improvement of quality of life of the elderly, and when the grip strength value is higher than the threshold value, the quality of life can be maintained in good condition.A dose-effect relationship was found between grip strength and physical health in quality of life. Results of our study indicated that the grip strength of the older adults needed to be greater than certain threshold values to maintain good quality of life.
Keywords: Quality of Life, SF-36, Muscle Strength, Restricted cubic spline model, Elderly
Received: 15 Apr 2024; Accepted: 30 Aug 2024.
Copyright: © 2024 Meng, Zhou, Zhang and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
cailing Zhou, Beijing Sport University, Beijing, China
chaoxing Liu, Beijing Sport University, Beijing, China
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