Table 2.

Independent predictors of CRF (ml/min)

	B	β	r2	p value
Sex (male/female)	− 667.352	− 0.692	0.48	< 0.001
Age (years)	− 29.039	− 0.181	0.03	0.084
Basal metabolic rate (kcal·day-1)	0.834	0.588	0.35	< 0.001
6-min walking (m)	2.700	0.465	0.22	< 0.001
Weight (kg)	21.198	0.606	0.36	< 0.001
Waist circumference (cm)	16.259	0.393	0.15	< 0.001
HR basal (bpm)	11.050	0.207	0.04	0.048
Handgrip (kg)	20.050	0.711	0.51	< 0.001
Chair stand (rep)	107.63	0.492	0.24	< 0.001
Arm curl (rep)	18.391	0.270	0.07	0.010
FEV1 (l)	323.96	0.463	0.21	< 0.001
Smoking (yes, no)	− 93.73	− 0.185	0.18	< 0.001
Meeting PAr (yes, no)	235.45	0.222	0.05	0.055
Maximum HR (bpm)	12.456	0.503	0.25	< 0.001
Time to exhaustion (min)	66.334	0.526	0.28	< 0.001
RPE max (1–10)	34.643	0.166	0.03	0.112

Statistically significant values are shown in bold

B, regression coefficient; β, standardized coefficient; FEV₁, forced expiratory volume in 1 s; HR, heart rate; PAr, physical activity recommendations; r², adjusted R-squared; RPE, rating perceived exertion