Table 2

Descriptive statistics for key GXT and Rockport variables

Variable

Mean (SD)

GXT Variables

VO2 (L/min)

1.73 (.53)

VO2 (mL/kg/min)

21.58 (4.90)

Maximum heart rate (beats/min)

156.78 (19.47)

Maximum respiratory exchange ratio (RER)

1.11 (.07)

Rockport variables

Walk time (minutes)

17.05 (2.12)

Exercise heart rate (beats/min)

117.36 (16.17)

Body weight (kg)

79.82 (14.68)

Mailey et al. BMC Public Health 2010 10:59   doi:10.1186/1471-2458-10-59