. Author manuscript; available in PMC: 2014 Jul 9.

Published in final edited form as: J Appl Physiol (1985). 2006 May 18;101(3):898–905. doi: 10.1152/japplphysiol.00126.2006

Table 1.

Anatomical Properties of Animals

	MSTN^+/+	MSTN^+/−	MSTN^−/−
Body Mass (g)	32.39±1.32	36.63±1.11	35.01±1.27
Body Length (mm)	93.33±0.53	95.00±0.59	92.75±0.92
Tibia Length (mm)	17.91±0.10	17.74±0.13	18.07±0.15

EDL Muscles
Wet Mass (mg)	11.62±0.29	12.82±0.25^*	19.32±0.52^*^#
Fibers per muscle	1462±12	1693±58^*	2351±87^*^#
Fiber area (µm²)	1231.12±28.64	1315.38±24.55^*	1512.14±29.00^*^#
L_o (mm)	13.13±0.43	12.78±0.22	13.38±0.23
L_f (mm)	5.78±0.19	5.63±0.10	5.89±0.10
CSA (mm²)	1.90±0.04	2.15±0.05^*	3.10±0.07^*^#
Hydroxyproline / Dry Muscle Mass (µg/mg)	1.90±0.14	0.77±0.09^*	0.47±0.08^*

Soleus Muscles
Wet Mass (mg)	10.45±0.44	11.97±0.78	14.22±0.73^*
Fibers per muscle	985±37	1185±33^*	1292±34^*^#
Fiber area (µm²)	1148.99±20.89	1162.28±20.66	1316.45±36.12^*^#
L_o (mm)	12.42±0.30	12.55±0.25	12.98±0.46
L_f (mm)	8.82±0.21	8.91±0.18	9.22±0.33
CSA (mm²)	1.12±0.06	1.27±0.07	1.45±0.03^*
Hydroxyproline / Dry Muscle Mass (µg/mg)	0.71±0.10	0.61±0.09	0.54±0.09

Values are means ± SE. N = 12 for tibia length and body length. N = 300 fibers from 3 muscles for each genotype. N = 5 muscles per genotype for fibers per muscle and hydroxyproline. N = 6 muscles per genotype for all other values.

Significantly different from MSTN^+/+ at P < 0.05.

Significantly different from MSTN^+/− at P < 0.05.