Participants
The G * power 3.1.9 software was used to estimate the sample size. Effect size = 0.25, α error = 0.05. It was calculated that the statistical power of 0.95 can be reached with 54 subjects.Aged 60–69 years old (n = 80) who had no Tai Chi practice experience in Zhoukou City, Henan Province were selected, and randomly divided into experimental group (n = 40) and control group (n = 40) using SPSS 27.0 “Visual Binning”. Inclusion criteria: ①The aged’s family and themselves all agreed to participate; ②The aged is able to complete normal physical exercise; ③No psychotropic drugs or major surgery.The aged in experimental group underwent Chen’s 24-style Tai Chi exercise, 4 times a week (60 min for each time) for a total of 12 weeks. The aged in control group maintained their original living habits.