Association between physical activity and frailty transitions in middle-aged and older adults: a nationwide longitudinal study

Table 4 Subgroup analysis

Variables	Transition from non-frailty to frailty		Transition from frailty to non-frailty
Variables	OR (95% CI)	P for interaction	OR (95% CI)	P for interaction
Vigorous PA
Age		0.682		0.545
50–64	0.53 (0.31–0.87)		0.67 (0.03–5.05)
>=65	0.41 (0.29–0.57)		1.38 (0.52–3.33)
Sex		0.670		0.697
Male	0.47 (0.31–0.70)		1.26 (0.25–4.90)
Female	0.41 (0.27–0.59)		1.28 (0.39–3.58)
Moderate PA
Age		0.864		0.833
50–64	0.37 (0.22–0.65)		1.92 (0.76–4.90)
>=65	0.34 (0.25–0.46)		2.09 (1.23–3.56)
Sex		0.894		0.392
Male	0.35 (0.23–0.54)		1.71 (0.77–3.75)
Female	0.35 (0.25–0.49)		2.16 (1.21–3.90)
Mild PA
Age		0.871		0.186
50–64	0.32 (0.16–0.73)		1.68 (0.58–5.46)
>=65	0.39 (0.25–0.60)		3.81 (1.75–9.58)
Sex		0.401		0.784
Male	0.34 (0.21–0.55)		2.69 (1.14–7.05)
Female	0.47 (0.26–0.88)		2.84 (1.16–8.60)
PA (Any)
Age		0.917		0.143
50–64	0.26 (0.11–0.72)		1.34 (0.46–4.35)
>=65	0.31 (0.19–0.53)		3.51 (1.61–8.85)
Sex		0.190		0.643
Male	0.23 (0.13–0.43)		2.13 (0.89–5.62)
Female	0.42 (0.22–0.87)		2.72 (1.10–8.25)

All analyses were adjusted for age, sex, ethnicity, education level, marital status, smoking status, drinker status, use of high blood pressure medication, and use of diabetes medication
PA, Physical activity

ISSN: 1479-5868