13 March 2023
Summary
Postmenopausal women are significantly more likely to suffer from vitamin D deficiency and obesity. It is common for postmenopausal women to have lower back pain (LBP), impaired muscle strength, and poor muscle function due to 25(OH)D deficiency. Obesity may also have a relationship with reduced muscle strength. On the basis of serum 25(OH)D concentration and body mass index (BMI), In an observational study, Chen et al. [1] studied 365 postmenopausal women with chronic LBP who were divided into four groups. Serum 25(OH)D concentrations in combination with BMI were assessed for their influence on paraspinal muscle (PSM) atrophy, fat infiltration, and severity of LBP. Results show that people with increased BMI and vitamin D inadequacy have less sun exposure time, decreased hand grip strength (HGS), decreased level of physical activity (lower Short Physical Performance Battery [SPPB] score), and PSM cross-sectional area than controls. However, this group's fat infiltration degree of the PSMs and visual analog scale (VAS) score was significantly increased. The authors conclude that high BMI and vitamin D insufficiency/deficiency have a significant positive additive interaction in terms of fat infiltration and impaired muscle strength of PSM.