. Author manuscript; available in PMC: 2012 Feb 28.

Published in final edited form as: J Appl Physiol (1985). 2007 Jul 12;103(4):1172–1179. doi: 10.1152/japplphysiol.00416.2007

Table 1.

Characteristics of SFA from young and old rats

Parameter	p90	p130	p130 + l-NNA	p130 + l-NNA + Indo
Maximum diameter, µm
Young	182.4±11.4	166.1±15.6	171.2±6.9	191.1±13.9
Old	188.9±11.1	192.5±11.6	177.2±15.2	164.0±13.3
Initial tone, %
Flow
Young	47.0±5.5	54.8±8.4	69.7±6.3	62.6±6.4
Old	54.6±9.5	51.7±5.8	64.0±4.8	57.6±9.9
ACh
Young	34.4±4.2	54.4±11.9	82.3±4.6^†^‡	70.8±10.4^†
Old	45.9±9.8	46.1±7.3	68.6±4.4^*	68.5±8.8

Values are means ± SE; n = 8–9 rats/group [young (4 mo old) and old (24 mo old)]. SFA, soleus muscle feed arteries; l-NNA, N^ω-nitro-l-arginine; Indo, indomethacin; p90 and p130, normal (90 cmH₂O) and high (130 cmH₂O) intraluminal pressure, respectively.

P ≤ 0.05 vs. young.

^†

P ≤ 0.05 vs. p90.

^‡

P ≤ 0.05 vs. p130.