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Table 5 E, H and E/H ratio of cortical bone obtained by nanoindentation tests, mean ± SD

From: Effects of treadmill with different intensities on bone quality and muscle properties in adult rats

 SEDEX12EX16EX20
Ct.L
 EL (GPa)23.57 ± 3.8524.15 ± 3.8525.04 ± 3.8420.71 ± 3.03a,b,c
 HL (GPa)1.01 ± 0.21d1.27 ± 0.49a,c,d1.01 ± 0.170.92 ± 0.08
 EL/HL24.10 ± 4.67b21.62 ± 7.3025.03 ± 3.26b22.62 ± 3.01
Ct.T
 ET (GPa)19.69 ± 2.9721.56 ± 2.29a,d20.97 ± 1.83a,d18.74 ± 1.67
 HT (GPa)0.88 ± 0.20c,d0.89 ± 0.24d0.97 ± 0.19d0.74 ± 0.08
 ET/HT22.87 ± 2.88b,d25.91 ± 6.8322.40 ± 4.31b22.55 ± 3.31
  1. n = 12 in each group
  2. Ct.L longitudinal cortical bone, Ct.T transverse cortical bone, EL longitudinal modulus of indentation, ET transverse modulus of indentation, HL longitudinal indentation hardness, HT transverse indentation hardness, EL/HL ratio of longitudinal indentation modulus to indentation hardness, ET/HT ratio of transverse indentation modulus to indentation hardness, SED sedentary control group, EX12 exercise group with a speed of 12 m/min, EX16 exercise group with a speed of 16 m/min, EX20 exercise group with a speed of 20 m/min
  3. aStatistically different from SED (p < 0.05)
  4. bStatistically different from EX12 (p < 0.05)
  5. cStatistically different from EX16 (p < 0.05)
  6. dStatistically different from EX20 group (p < 0.05)