Workers’ physical activity data contribute to estimating maximal oxygen consumption: a questionnaire study to concurrently assess workers’ sedentary behavior and cardiorespiratory fitness

Table 5 Constant error for subgroups of sex, age, and measured VO_2max (n = 198)

	N (%)	Measured VO_2max	BMI model*		WG model*		%fat model*
	N (%)	Measured VO_2max	Predicted VO_2max	CE	Predicted VO_2max	CE	Predicted VO_2max	CE
Sex
Women	93 (47.0)	35.0 ± 5.5	35.2 ± 4.0	−0.17 ± 4.22	35.5 ± 4.1	−0.48 ± 4.17	34.9 ± 4.3	0.16 ± 3.92
Men	105 (53.0)	41.4 ± 6.2	41.6 ± 4.2	−0.18 ± 4.29	41.9 ± 4.2	−0.51 ± 4.11	41.3 ± 4.2	0.13 ± 4.24
Age
30–39	29 (14.7)	41.4 ± 6.0	42.4 ± 4.1	−0.91 ± 3.75	42.4 ± 4.5	−0.98 ± 3.59	41.8 ± 3.9	−0.39 ± 3.76
40–49	88 (44.4)	39.1 ± 7.3	38.8 ± 5.4	0.32 ± 4.52	39.3 ± 5.4	−0.12 ± 4.49	38.7 ± 5.6	0.40 ± 4.35
50–59	81 (40.9)	36.5 ± 5.6	36.9 ± 4.5	−0.45 ± 4.08	37.2 ± 4.6	−0.73 ± 3.92	36.4 ± 4.7	0.05 ± 3.92
VO_2max
Low	66 (33.3)	31.4 ± 2.6	34.1 ± 3.7	−2.64 ± 2.88	34.2 ± 3.7	−2.80 ± 2.89	33.5 ± 3.6	−2.07 ± 2.87
Middle	66 (33.3)	37.7 ± 1.6	38.6 ± 3.5	− 0.91 ± 3.36	39.0 ± 3.6	−1.27 ± 3.45	38.3 ± 3.7	− 0.58 ± 3.60
High	66 (33.3)	46.0 ± 4.2	43.0 ± 3.8	3.02 ± 4.23	43.4 ± 3.6	2.58 ± 3.99	42.9 ± 3.7	3.08 ± 3.87

BMI body mass index, CE constant error, VO_2max maximal oxygen consumption, WG waist girth
* Each model includes age, sex, and PA score in addition to the titled values (BMI, WG, and %fat) as independent variables

ISSN: 1471-2458