. Author manuscript; available in PMC: 2015 Mar 20.

Published in final edited form as: Pediatr Pulmonol. 2009 Jun;44(6):602–612. doi: 10.1002/ppul.21042

Table 2.

Contraction of isolated ASM cells

Age group	% Shortening	Rate (1/sec)	PMV (μm/sec)	AV (μm/sec)
PT110 (n=9)	58.3 + 11.4	0.44 + 0.24	17.8 + 13.0	3.53 + 2.59
PT125 (n=9)	62.7 + 9.49	0.47 + 0.15	25.1 + 11.3	4.99 + 2.23
NB (n=10)	50.7 + 11.9	0.30 + 0.10 ^§	11.1 + 5.17	2.20 + 1.03
Adult (n=10)	51.1 + 7.67	0.54 + 0.24 ^§	45.1 + 17.4 ^*	8.95 + 3.46 ^*

PT = preterm; NB = newborn; PMV = predicted maximum velocity; AV = average velocity. All measurements were done in the presence of 1.6 mM CaCl₂.

Considered significantly different from all other groups at p < 0.05.

^§

Significantly different from each other only at p < 0.05.