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. 2019 Aug 7;34(5):533–550. doi: 10.1177/0748730419865400

Table 3.

Association of distal skin temperature (DST) variables with skeletal muscle and descending aorta 18F-FDG uptake (mean and peak standardized uptake value [SUV]) in young adults.

Superficial Muscle SUVpeak
 Deep Muscle SUVpeak
 All Muscles SUVpeak
 Descending Aorta SUVpeak
B R 2 p B R 2 p B R 2 p B R 2 p
Model 1 (unadjusted)
 IS 0.03 −0.013 0.85 0.27 −0.002 0.37 0.16 −0.004 0.41 −0.56 0.030 0.07
 IV 0.001 −0.013 0.99 −0.28 −0.006 0.45 −0.15 −0.008 0.53 1.03 0.080 0.01
 RA −0.06 −0.013 0.95 2.06 −0.002 0.35 1.15 −0.005 0.42 −1.48 −0.008 0.52
 TL10 (hh:mm) 0.003 −0.011 0.67 0.01 0.005 0.25 0.01 0.005 0.25 −0.003 −0.013 0.84
 TM5 (hh:mm) 0.01 −0.003 0.38 −0.004 −0.013 0.83 0.003 −0.013 0.82 −0.03 0.025 0.09
 L10 (°C) 0.002 −0.013 0.9 −0.02 −0.006 0.48 −0.01 −0.009 0.56 0 −0.013 1
 M5 (°C) 0.005 −0.013 0.84 0.02 −0.011 0.65 0.02 −0.010 0.64 −0.07 0.005 0.25
Model 2 (adjusted for sex and personal-ETL10)
 IS −0.066 0.034 0.66 0.02 0.099 0.96 −0.03 0.111 0.89 −0.57 0.095 0.08
 IV 0.13 0.038 0.49 0.04 0.099 0.92 0.10 0.113 0.69 1.09 0.136 0.01
 RA −1.59 0.056 0.17 −1.78 0.105 0.47 −1.60 0.123 0.31 −2.92 0.072 0.26
 TL10 (hh:mm) −0.002 0.032 0.80 0.005 0.100 0.72 0.002 0.111 0.80 −0.004 0.057 0.79
 TM5 (hh:mm) 0.01 0.042 0.37 −0.01 0.101 0.70 0.001 0.111 0.95 −0.03 0.085 0.13
 L10 (°C) 0.02 0.058 0.15 0.03 0.109 0.37 0.03 0.127 0.25 0.04 0.071 0.29
 M5 (°C) 0.01 0.032 0.80 0.03 0.101 0.64 0.01 0.112 0.71 −0.005 0.056 0.94

Linear regression analyses were performed to examine the association of the DST variables with 18F-fluorodeoxyglucose (18F-FDG) uptake by the skeletal muscles and the descending aorta. Model 1 was adjusted for no covariate (N = 77); model 2 was adjusted for sex and the mean personal environmental temperature over the L10 period (personal-ETL10, n = 76). Nonstandardized B coefficient, adjusted R2, andp values are provided. Significant values are shown in bold (p ≤ 0.05). IS = interday stability, IV = intraday variability; L10 = mean of the 10 consecutive hours with the lowest values and when they occurred (TL10); M5 = mean of the 5 consecutive hours with the highest values and when they occurred (TM5); RA = relative amplitude.