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. 2019 Mar 5;42(9):1051–1065. doi: 10.1007/s40618-019-01026-5

Table 6.

QTe, QTp and Te Variability and Coherence Data after testosterone therapy

Variables Baseline subjects
N = 13
Testosterone subjects
N = 13
P values
Rest
 QTe mean (ms) 358 ± 33 349 ± 30 Ns
 QTe variance (ms2) 44 [30] 48 [47] Ns
 QTe standard deviation 7 ± 2 7 ± 1 Ns
 RR (ms) 878 ± 207 925 ± 177 Ns
 RR variance (ms2) 1090 [1950] 788 [1663] Ns
 RR standard deviation 37 ± 21 39 ± 22 Ns
 QTeVI − 0.75 [0.77] − 0.52 [0.62] Ns
 RR → QTe, coherence 0.206 ± 0.034 0.215 ± 0.029 Ns
 QTp mean (ms) 265 ± 23 253 ± 25 Ns
 QTp variance (ms2) 27 [26] 27 [16] Ns
 QTp standard deviation (ms2) 5 ± 1 5 ± 1 Ns
 QTpVI − 0.77 [0.55] − 0.50 [0.79] Ns
 RR → QTp, coherence 0.236 ± 0.036 0.212 ± 0.034 Ns
 Te (ms) 94 ± 14 96 ± 9 Ns
 Te variance (ms) 42 [46] 74 [40] Ns
 Te standard deviation 8 ± 2 8 ± 1 Ns
 TeVI 0.60 [0.43] 0.71 [0.47] Ns
 RR → Te, coherence 0.220 ± 0.038 0.208 ± 0.042 Ns
 QTp → Te, coherence 0.471 ± 0.061 0.453 ± 0.068 Ns
10 min exercise recovery
 QTe mean (ms) 283 ± 27 285 ± 18 Ns
 QTe variance (ms2) 324 [448] 369 [319] Ns
 QTe standard deviation 23 ± 7 19 ± 6 Ns
 RR (ms) 562 ± 130 583 ± 71 Ns
 RR variance (ms2) 2612 [2859] 3431 [4834] Ns
 RR standard deviation 65 ± 41 64 ± 24 Ns
 QTeVI − 0.28 [0.54] − 0.36 [0.26] Ns
 RR → QTe, coherence 0.235 ± 0.055 0.219 ± 0.025 Ns
 QTe-RR slope 0.35 [0.23] 0.34 [0.12] Ns
 QTp mean (ms) 206 ± 20 213 ± 20 Ns
 QTp variance (ms2) 291 [311] 293 [549] Ns
 QTp standard deviation (ms2) 19 ± 6 20 ± 7 Ns
 QTpVI − 0.12 [0.44] − 0.20 [0.24] Ns
 RR → QTp, coherence 0.218 ± 0.031 0.216 ± 0.024 Ns
 QTp-RR slope 0.30 [0.13] 0.31 [0.11] Ns
 Te (ms) 76 ± 10 75 ± 9 Ns
 Te variance (ms) 106 [95] 82 [87] Ns
 Te standard deviation 11 ± 2 10 ± 3 Ns
 TeVI 0.22 [0.79] 0.16 [0.87] Ns
 RR → Te, coherence 0.208 ± 0.048 0.200 ± 0.016 Ns
 QTp → Te, coherence 0.417 ± 0.037 0.447 ± 0.095 Ns
 Te-RR slope 0.077 [0.09] 0.002 [0.102] 0.028

These data are detected automatically with a custom software. Values are expressed as mean ± SD or median [interquartile range 75th percentile–25th percentile]