Abstract: Sarcopenia is an age-related syndrome in the elderly, which often induces fall, fracture, weakness, cognitive impairment and other adverse prognosis, and has become an important challenge for the public health system. Exercise intervention is considered to be an effective means to prevent and treat sarcopenia, but there is still a debate about the intensity of exercise intervention. This paper summarizes the research progress of different intensity exercise interventions in elderly patients with sarcopenia, including the definition, pathogenesis and influencing factors of sarcopenia, the classification and characteristics of resistance exercise and aerobic exercise, the concept and grading of exercise intensity and its impact on muscle, and identifies that low intensity exercise has a high safety tolerance, moderate intensity exercise is a commonly used intervention method, and high intensity exercise is better in improving muscle function but has higher risk. Future research should focus on the effect of different exercise modes, intensities, frequencies, and durations on the treatment of elderly patients with sarcopenia, lay the foundation for the formulation of personalized long-term exercise programs, and provide more ideas for the formulation of exercise prescriptions for elderly patients with sarcopenia.    

Key words: sarcopenia, skeletal muscle, exercise intervention