Table 2.

Maximum contraction frequency (Hz) of Alaska blackfish isometrically-contracting ventricle strips under each recording condition.

	Experimental
	Normoxia	Hypoxia	Reoxygenation
Normoxia-acclimated	0.47 ± 0.03 a	0.33 ± 0.03 b	0.43 ± 0.03 a
Hypoxia-acclimated	0.33 ± 0.03 ∗	0.30 ± 0.00	0.30 ± 0.00 ∗
	Time Controls
	0 min	30 min	60 min
Normoxia-acclimated	0.50 ± 0.00	0.47 ± 0.03	0.47 ± 0.03
Hypoxia-acclimated †	0.33 ± 0.03	0.33 ± 0.03	0.37 ± 0.03

Statistical analysis: 2-way RM ANOVA and Student-Newman-Keuls post hoc test. A dagger.

n = 3 strips from N = 3 fish per acclimation group.

Data are means ± SEM.

^†Indicates a main effect of acclimation condition and a difference (P < 0.05) between normoxia-acclimated and hypoxia-acclimated preparations. An asterisk.

^∗Indicates a difference (P < 0.05) between normoxia- and hypoxia-acclimated preparations within a recording condition. Dissimilar lowercase letters indicate differences (P < 0.05) among recording conditions within an acclimation group.