Maximum Aerobic Capacity of Underground Coal Miners in India

Table 3

Physiological characteristics of the subjects.

Parameters	Shoveller n = 37	Carrier n = 39	Driller n = 22	f value	P value
HRrest (Beats/min)	66.4 ± 6.9 (52–76)	64.5 ± 6 (52–76)	68.2 ± 5.2 (58–78)	2.69	0.07
HRmax (Beats/min)	179 ± 9.9 (162–195)	181 ± 9.3 (163–197)	175 ± 8.2 (162–190)	2.19	0.12
HRR (Beats/min)	113 ± 14.6 (89–137)	117 ± 14.0 (91–143)	107 ± 11.4 (91–125)	2.98	0.06
Absolute VO2max (L/min)	1.89 ± 0.2 (1.54–2.35)	2.03 ± 0.19 (1.64–2.6)	2.08 ± 0.2 (1.65–2.48)	7.19	0.001
Relative VO2max (mL/kg/min)	35 ± 4.6 (28.2–45.7)	38.3 ± 3.7 (30.3–45.6)	36.2 ± 3.3 (31.3–43.1)	6.88	0.002

Mean ± sd (range).