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Table 3 Relationship of anthropometric and body composition variables with indicators of airway obstruction in the total sample

From: Association between air flow limitation and body composition in young adults

  FEV1 FEF25–75% Raw(cmH2O/L/s) sRaw(cmH2O*s)
Total sample
 BMI (kg/m2) r = − 0.044a − 0.038a 0.628a 0.552a
p = 0.688 0.726 < 0.0001 < 0.0001
 %BF r = − 0.540a − 0.375a 0.723a 0.519a
p = < 0.0001 0.0005 < 0.0001 < 0.0001
 %FFM r = 0.096a 0.047a − 0.156a − 0.1507a
p = 0.386 0.670 0.157 0.173
Males
 BMI (kg/m2) r = − 0.092a − 0.073a 0.700a 0.617a
p = 0.569 0.653 < 0.0001 < 0.0001
 %BF r = − 0.087a 0.044a 0.728a 0.607a
p = 0.593 0.783 < 0.0001 < 0.0001
 %FFM r = − 0.056a − 0.112a − 0.341a − 0.392a
p = 0.729 0.490 0.031 0.012
Females
 BMI (kg/m2) r = 0.081b 0.066a 0.574b 0.551b
p = 0.601 0.674 0.0001 0.0001
 %BF r = 0.100b − 0.100a 0.4662b 0.517b
p = 0.520 0.522 0.001 0.0004
 %FFM r = 0.136b 0.119a − 0.011b 0.026b
p = 0.383 0.443 0.943 0.867
  1. BMI body mass index (kilograms divided by the square of the height in meters), BF body fat, FFM free fat mass, FEV1 volume that has been exhaled at the end of the first second of forced expiration, FEF25–75% forced expiratory flow 25–75%; RAW airway resistance, sRAW specific airway resistance, cmH2O/L/s centimeters of water divided liters divided seconds, cmH2O*s centimeters of water per second,
  2. aSpearman correlation
  3. bPearson correlation