This invention discloses a strain of *
Lactobacillus delbrueckii* with
muscle-protecting function during
fat loss, its products, and applications, belonging to the field of microbial technology. The invention discloses *
Lactobacillus delbrueckii*
subspecies Turb8, with accession number CGMCC No. 35627. This strain or its preparations can effectively prevent or improve
muscle loss and functional decline during the use of fat-loss drugs such as GLP-1
receptor agonists (e.g.,
liraglutide, smegglutide), achieving the effect of "
fat loss without
muscle loss." While maintaining the original weight-loss effect of fat-loss drugs, the strain of this invention can significantly increase the user's
lean body mass percentage, increase
lower limb muscle mass, increase muscle
fiber cross-sectional area, and improve muscle function indicators such as limb strength and suspension endurance. This invention also relates to bacterial agents containing this strain, various preparations, and their application in the preparation of products for improving (especially
drug-induced)
muscle loss.