Background Sarcopenia is characterized by the degenerative loss of skeletal muscle and is associated with increased adverse surgical outcomes. Glutamine is considered as an immune-modulating formula, which may stimulate protein synthesis in the skeletal muscle but also inhibited protein-degradation. In this study, the investigators calculate the area and volume psoas major muscle (PMMA; PMMV) of the third lumbar vertebral body as the reference of skeletal muscle. The aim of this study is to investigate whether perioperative glutamine supplementation restores atrophy of psoas muscle.
Age range
20 Years
Sex
ALL
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area psoas major muscle (PMMA; cm2)
Timeframe: 3 month after surgery
volume of psoas major muscle (PMMV; cm3)
Timeframe: 3 month after surgery