[1] Ren RJ, Qi JL, Lin SH, et al. The China Alzheimer report 2022. Gen Psychiatr, 2022; 35, e100751. doi:  10.1136/gpsych-2022-100751
[2] Livingston G, Huntley J, Sommerlad A, et al. Dementia prevention, intervention, and care: 2020 report of the Lancet Commission. Lancet, 2020; 396, 413−46. doi:  10.1016/S0140-6736(20)30367-6
[3] Sternäng O, Reynolds CA, Finkel D, et al. Grip strength and cognitive abilities: associations in old age. J Gerontol B Psychol Sci Soc Sci, 2016; 71, 841−8. doi:  10.1093/geronb/gbv017
[4] Taekema DG, Ling CHY, Kurrle SE, et al. Temporal relationship between handgrip strength and cognitive performance in oldest old people. Age Ageing, 2012; 41, 506−12. doi:  10.1093/ageing/afs013
[5] Jiang RT, Westwater ML, Noble S, et al. Associations between grip strength, brain structure, and mental health in > 40, 000 participants from the UK Biobank. BMC Med, 2022; 20, 286. doi:  10.1186/s12916-022-02490-2
[6] McGough EL, Cochrane BB, Pike KC, et al. Dimensions of physical frailty and cognitive function in older adults with amnestic mild cognitive impairment. Ann Phys Rehabil Med, 2013; 56, 329−41. doi:  10.1016/j.rehab.2013.02.005
[7] Griffin PT, Heffernan A. Digit span, forward and backward: separate and unequal components of the WAIS digit span. Percept Mot Skills, 1983; 56, 335−8. doi:  10.2466/pms.1983.56.1.335
[8] Costa LD. The relation of visuospatial dysfunction to digit span performance in patients with cerebral lesions. Cortex, 1975; 11, 31−6. doi:  10.1016/S0010-9452(75)80018-9
[9] Zheng JJJ, Lord SR, Close JCT, et al. Brain white matter hyperintensities, executive dysfunction, instability, and falls in older people: a prospective cohort study. J Gerontol A Biol Sci Med Sci, 2012; 67, 1085−91. doi:  10.1093/gerona/gls063
[10] Tikkanen E, Gustafsson S, Amar D, et al. Biological insights into muscular strength: genetic findings in the UK Biobank. Sci Rep, 2018; 8, 6451. doi:  10.1038/s41598-018-24735-y