Table 2.

Growth Response of PL to 14 Days of FO

	6-Mo	9-Mo	18-Mo	26-Mo	30-Mo
CON
Body weight (g)	398 ± 19	512 ± 15	565 ± 37	600 ± 46	566 ± 76
Wet weight (mg)	392 ± 23	489 ± 24	490 ± 25	410 ± 352	352 ± 28
mg/g BW	0.94 ± 0.033	0.95 ± 0.032	0.81 ± 0.119	0.65 ± 0.037	0.63 ± 0.087
FO
Body weight (g)	390 ± 35	490 ± 17	536 ± 32	562 ± 73	593 ± 32
Wet weight (mg)	528 ± 54*	632 ± 44*	572 ± 26*	484 ± 45*	404 ± 30†
mg/g BW	1.35 ± 0.75*	1.36 ± 0.112*	1.14 ± 0.76*	0.93 ± 0.088*	0.76 ± 0.06†
Relative difference (%)	37 ± 10	30 ± 13	19 ± 11	17 ± 14	15 ± 9

Notes: The body weight (g), plantaris (PL) muscle wet weight (mg), and normalized weight (mg muscle/g BW) from rats in the control (CON) and functional overload (FO) groups at various ages. The relative difference is the % difference in PL wet weight between the CON and FO groups. Data are mean ± standard deviation (n = 6 per group).

^*A significant difference between the CON and FO groups (p < .001) within an age group.

^†A significant difference between the CON and FO groups (p = .02) within an age group.