Maximum Aerobic Capacity of Underground Coal Miners in India

Table 2

Physical characteristics of the subjects.

Parameters	Shoveller 𝑛=37	Carrier 𝑛=39	Driller 𝑛=22	f value	P value
Age (yr)	41 ± 9.9 (25–58)	39.7 ± 9.6 (23–57)	44.9 ± 8.2 (30–58)	2.19	0.12
Height (cm)	163 ± 7 (147.5–176)	162 ± 5.9 (148.5–178)	163.6 ± 5.6 (151–171.5)	0.51	0.60
Weight (kg)	54.7 ± 7.6 (41–68.5)	53 ± 6.3 (43–68.5)	57.9 ± 8.2 (45–71.5)	3.21	0.04
Body mass index (kg/m^2)	20.6 ± 2.4 (16–25.9)	20.2 ± 2.1 (16.7–26.2)	21.5 ± 2.5 (17.3–26)	2.09	0.13
Body surface area (m^2)	1.6 ± 0.1 (1.3–1.8)	1.5 ± 0.1 (1.3–1.8)	1.6 ± 0.1 (1.3–1.8)	2.0	0.14
Experience (yr)	18.4 ± 8.2 (5–33)	19.3 ± 9.5 (5–38)	22.7 ± 8.2 (9–34)	1.76	0.18

Mean ± sd (range).