Table 1.

General and cardiac echo measurements in WT and mTOR-Tg mice

	WT	mTOR-Tg
Age, wk	14.0 ± 0.2	13.9 ± 0.2
Body weight, g	23.9 ± 0.5	22.2 ± 0.6
Tibia length, mm	23.4 ± 0.3	23.4 ± 0.2
Heart weight, mg	120.7 ± 3.5	119.5 ± 3.2
Heart weight/body weight, mg/g	5.1 ± 0.2	5.4 ± 0.2
Heart weight/tibia length, mg/mm	5.2 ± 0.2	5.1 ± 0.1
Left ventricular diameter in diastole, mm	2.9 ± 0.1	3.0 ± 0.1
Left ventricular diameter in systole, mm	1.3 ± 0.1	1.2 ± 0.1
Fractional shortening, %	56 ± 2	61 ± 2
Heart rate, beats/min	702 ± 10	695 ± 17

Values are means ± SE; n = 8 wild-type littermates (WT) and n = 11 transgenic mice with cardiac-specific overexpression of wild-type mTOR (mTOR-Tg).