Abstract
Ageing increases the occurrence and development of many diseases. Exercise is believed
to be an effective way to improve ageing and skeletal muscle atrophy. However, many
elderly people are unable to engage in active exercise. Whole-body vibration is a
passive way of moving that is especially suitable for the elderly and people who find
it inconvenient to exercise. Metabolomics is the systematic study of metabolic changes
in small molecules. In this study, metabolomics studies were performed to investigate
the regulatory effect of whole-body vibration on the skeletal muscles of ageing mice.
After 12 weeks, we found that whole-body vibration had the most obvious effect on
lipid metabolism pathways (such as linoleic acid, α-linolenic acid metabolism, glycerophospholipid
metabolism pathways) in skeletal muscle of ageing mice. Through further research we
found that whole-body vibration decreased the levels of triglycerides, total cholesterol,
low-density lipoprotein cholesterol and very low-density lipoprotein in blood; decreased
the lipid deposition in skeletal muscle; decreased the protein expression of monocyte
chemoattractant protein-1 and interleukin-6; improved the protein levels of phosphorylated
insulin receptor substrate-1, phosphate phosphoinositide 3-kinase and p-AKT; improved
the protein levels of klotho; and decreased the protein expression of p53. These findings
reveal that whole-body vibration might postpone senility by attenuating lipid deposition
and reducing chronic inflammation and the insulin resistance of skeletal muscle.
Key words
metabolomics - aging - whole body vibration - skeletal muscle - insulin resistance