Table 2 Associations between cardiorespiratory fitness variables and brown adipose tissue (BAT) variables.

From: Relationships between cardiorespiratory fitness/muscular strength and 18F-fluorodeoxyglucose uptake in brown adipose tissue after exposure to cold in young, sedentary adults

  BAT volume (ml) BAT SUVmean BAT SUVpeak
β R2 P β R2 P β R2 P
MODEL 1
Time to exhaustion (s) −0.006 0.000 0.850 −0.001 0.006 0.444 −0.002 0.003 0.592
VO2max (ml/min) 0.013 0.024 0.095 0.000 0.013 0.217 −0.001 0.004 0.484
VO2max relative to LBM (ml/kg/min) −0.247 0.002 0.667 0.017 0.008 0.352 0.043 0.002 0.598
VO2max relative to body weight (ml/kg/min) −1.274 0.028 0.057 −0.026 0.011 0.235 −0.100 0.009 0.289
MODEL 2
Time to exhaustion (s) 0.005 0.135 0.846 −0.001 0.144 0.101 −0.005 0.151 0.147
VO2max (ml/min) 0.009 0.191 0.182 0.000 0.170 0.073 −0.001 0.172 0.215
VO2max relative to LBM (ml/kg/min) −0.641 0.189 0.224 0.006 0.147 0.719 −0.008 0.160 0.912
VO2max relative to body weight (ml/kg/min) −1.363 0.215 0.025 −0.029 0.157 0.160 −0.111 0.168 0.199
MODEL 3
Time to exhaustion (s) −0.004 0.145 0.884 −0.001 0.168 0.285 −0.004 0.159 0.273
VO2max (ml/min) −0.003 0.212 0.753 0.000 0.171 0.343 −0.001 0.172 0.359
VO2max relative to LBM (ml/kg/min) −0.541 0.219 0.299 0.004 0.165 0.828 −0.014 0.166 0.851
VO2max relative to body weight (ml/kg/min) −1.731 0.244 0.006 −0.016 0.187 0.432 −0.079 0.180 0.379
  1. Model 1: Unadjusted. Model 2: adjusted by date when positron emission tomography/computed tomography (PET/CT) was performed. Model 3: adjusted by date of PET/CT and sex. β = non-standardised coefficients; BM = body mass; R2 = explained variance; SUV = standardised uptake value; LBM: lean body mass; VO2max = maximum volume of oxygen consumed. n = 98 subjects.