. 2021 Jun 3;12:675778. doi: 10.3389/fphys.2021.675778

TABLE 3.

Basal papillary muscle functional data.

	W (n = 14)	W-EX (n = 13)	SHR (n = 18)	SHR-EX (n = 17)
CSA (mm²)	1.26 ± 0.15	1.24 ± 0.15	1.33 ± 0.17	1.24 ± 0.19
DT (g/mm²)	5.02 ± 1.41	4.84 ± 1.10	5.77 ± 1.32	6.35 ± 0.82^#
RT (g/mm²)	0.57 ± 0.17	0.52 ± 0.09	0.78 ± 0.15*	0.79 ± 0.19^#
+dT/dt (g/mm²/s)	53.3 ± 16.8	50.4 ± 11.5	52.2 ± 12.8	63.4 ± 9.78^#§
–dT/dt (g/mm²/s)	20.2 ± 4.74	19.6 ± 3.49	23.2 ± 4.41*	24.7 ± 3.30^#

Data as mean ± standard deviation. W, Wistar rats; W-EX, exercised Wistar rats; SHR, spontaneously hypertensive rats; SHR-EX, exercised SHR; CSA, papillary muscle cross-sectional area; DT, developed tension; RT, resting tension; +dT/dt, maximum rate of tension development; –dT/dt, maximum rate of tension decrease. ANOVA for a 2 × 2 factorial design and Tukey; *p < 0.05 vs. W; #p < 0.05 vs. W-EX; §p < 0.05 vs. SHR.