Fig. 1
From: A serial mediation model of physical exercise and loneliness: the role of frailty and depression
Physical exercise and loneliness in the integral conceptual model of frailty
Fig. 1 | BMC Geriatrics
From: A serial mediation model of physical exercise and loneliness: the role of frailty and depression
Physical exercise and loneliness in the integral conceptual model of frailty