Path models with standardized coefficients.

(A) ***PPN = 3518; model B: N = 445. (B) Dotted line indicates the path was not significant at P = 0.05 (C) Control variables (age, sex, chronic disease and weekly exercise frequency) were included but not reported in the models. (D) model A:χ2/df = 3.262, GFI = 0.997, AGFI = 0.991, CFI = 0.989, TLI = 0.975, RMSEA = 0.025, SRMR = 0.018; model B: χ2/df = 1.638, GFI = 0.979, AGFI = 0.960, CFI = 0.949, TLI = 0.919, RMSEA = 0.038, SRMR = 0.043.