Table 3. Correlation between absolute and percentage changes in circulating plasma irisin during an acute bout of resistance and aerobic exercise and changes in body composition and fitness following 6 weeks of resistance training
VariablesResistance trainingAerobic training
∆Irisin% ∆Irisin∆Irisin% ∆Irisin
∆Weight (kg)−0.37 (0.260)−0.41 (0.213)0.05 (0.895)−0.12 (0.737)
∆BMI z‐score−0.33 (0.320)−0.39 (0.233)−0.27 (0.420)−0.40 (0.222)
∆Waist circumference (cm)−0.24 (0.474)−0.33 (0.328)−0.38 (0.250)−0.62 (0.043)
∆Total body fat (%)−0.70 (0.017)−0.75 (0.008)0.08 (0.823)−0.12 (0.717)
∆Total fat mass (kg)−0.51 (0.113)−0.57 (0.069)0.20 (0.550)−0.01 (0.967)
∆Skeletal muscle mass (kg)0.33 (0.321)0.24 (0.471)−0.13 (0.708)−0.23 (0.489)
∆Hand grip strength0.05 (0.884)0.01 (0.972)−0.76 (0.007)−0.63 (0.036)
  • Data are presented as r (P‐value).