Kocak MZ, Aktas G, Atak B, Bilgin S, Kurtkulagi O, Duman TT, Ozcil IE. THE ASSOCIATION BETWEEN VITAMIN D LEVELS AND HANDGRIP STRENGTH IN ELDERLY MEN.
Acta Endocrinol (Buchar) 2020;
16:263-266. [PMID:
33029248 DOI:
10.4183/aeb.2020.263]
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Abstract
Context
Vitamin D is a steroid hormone that acts by binding to the vitamin D receptor (VDR) found in many tissues. According to the long-term mechanism, vitamin D causes the proliferation and differentiation of muscle cells by gene transcription.
Objective
We aimed to evaluate the relationship between muscle strength and serum vitamin D levels in elderly men.
Design
Cross-sectional study.
Subjects and Methods
Male patients over age 50 were included in the study. Study population was divided into 2 groups with handgrip strength according to body mass index, either as subjects with weak or with normal handgrip strength test (HGST). Vitamin D levels and other variables compared between weak and normal groups.
Results
Vitamin D level of weak and normal groups were 7.5 (3-19.9) μg/L, and 11.6 (11.6-34.9) μg/L, which means significant reduced vitamin D levels in weakness group (p=0.01). Vitamin D levels were significantly correlated with HGST levels (r:0.362, p=0.001). Vitamin D levels were found to be an independent predictor of weakness according to HGST in logistic regression analysis (OR: 0.453, 95% Cl:0.138-0.769, p=0.05).
Conclusions
Low vitamin D level is an independent risk factor for muscle weakness in men aged more than 50 years. Therefore, vitamin D levels should be screened and early replacement should be initiated for the sake of improvement of muscle strength in elderly subjects that vulnerable for frailty.
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