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. 2013 Aug 13;4(4):267–275. doi: 10.1007/s13539-013-0114-x

Table 3.

Absolute levels of biomarkers and muscle size/strength data. Overview of average levels of biomarkers, biomarker ratios, muscle volume, and strength over the course of the three sampling time points in the study. Data are shown as means and SD's for the YM and OM groups individually and for both groups pooled

Young Elderly All combined
Mean SD Mean SD Mean SD
(ng/ml) (ng/ml) (ng/ml)
IC6 (ng/ml)
 PRE 32.22 16.02 24.40 11.67 28.70 14.43
 2W 31.86 17.29 26.07 12.72 29.25 15.31
 4W 28.51 13.99 23.372 11.69 26.08 12.87
C6M (ng/ml)
 PRE 46.88 16.44 51.85 17.37 49.11 16.60
 2W 47.40 15.36 53.80 19.71 50.28 17.27
 4W 52.88 20.69 55.86 20.32 54.29 20.00
C6M/IC6 ratio (unitless)
 PRE 1.83 1.27 2.63 1.54 2.19 1.42
 2W 1.81 1.09 2.58 1.63 2.16 1.38
 4W 2.31 1.63 3.23 2.32 2.74 1.99
Quadriceps volume (cm3)
 PRE 1898 161.0 1305 147.7 1654 336.6
 2W 1729 116.1 1250 155.9 1532 275.1
 4W 1872 155.3 1278 143.8 1628 334.8
Knee extensor strength (Nm)
 PRE 215.2 28.41 139.1 21.15 183.9 45.97
 2W 171.3 24.26 117.8 23.88 149.2 35.78
 4W 227.3 30.89 146.9 30.60 194.2 50.50