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Table 2 Descriptive statistics for key GXT and Rockport variables

From: Construct validation of a non-exercise measure of cardiorespiratory fitness in older adults

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)
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