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Table 5 Comparison of estimated minute ventilation using individual or group mean equations

From: Minute ventilation of cyclists, car and bus passengers: an experimental study

  Minute ventilation cyclists Ratio minute ventilation bike: car
Study/gender Mean minute ventilation Mean difference (l/min) (SD)# Mean ratio Mean difference (SD)#
TRAVEL: individual $     
   Men 22.0 NA 1.88 NA.
   Women 27.6 NA 2.61 NA
TRAVEL: mean     
   Men 20.4 -1.7 (5.6) 1.87 -0.01 (0.36)
   Women 34.4 6.8 (10.1) 2.57 -0.04 (0.32)
Samet[12]     
   Men 26.9 4.9 (6.7) 1.92 0.03 (0.37)
   Women 29.6 2.0 (9.5) 2.43 -0.18 (0.37)
Colucci[13]     
   Men 10.0 -12 (4.8) 1.60 -0.29 (0.34)
  1. #Mean difference with individual calculations (SD of difference)
  2. $Using individual equations from this study
  3. Using group mean equations from this study