Sleep Duration and Sarcopenia: A Risk Assessment

I read the recent article published in this journal by Li et al1 with great interest. The authors conducted a meta-analysis to examine the relationship between sleep duration and sarcopenia, and sensitivity analyses were also broadly conducted. I think that there is an advantage in collecting recent reports with standard procedures of a meta-analysis. I understand that the effect of long sleep duration on sarcopenia incidence was significant by pooling 4 cohort studies, and I have some comments.