Table 3.
Left ventricle: myocardial mass and overall cardiac function
| Parameter | Sex difference in slope | Sex difference in elevation | Age regression P | Age regression R 2 | Age regression slope |
|---|---|---|---|---|---|
| Absolute values | |||||
| MM (g) | NS | M > F*** | *** | M: 0.337 F: 0.054 |
M: 1.55 F: 0.26 |
| SV (mL) | NS | M > F*** | NS | ||
| CO (mL min−1) | NS | M > F** | NS | ||
| AER (mL s−1) | NS | M > F*** | NS | ||
| AFR (mL s−1) | NS | M > F* | NS | ||
| Normalized to BSA | |||||
| MM/BSA (MI) (g m−2) | NS | M > F*** | *** | M: 0.25 F: 0.30 |
M: −0.9 F: −1.2 |
| SV/BSA (mL m−2) | NS | NS | *** | 0.22 | −1.1 |
| CO/BSA (mL min−1 m−2) | NS | NS | ** | 0.21 | −0.1 |
| AER/BSA (mL s−1 m−2) | NS | NS | ** | 0.15 | −3.8 |
| AFR/BSA (mL s−1 m−2) | NS | NS | ** | 0.19 | −4.1 |
* P < 0.05; ** P < 0.01; *** P < 0.005. AER, average ejection rate; AFR, average filling rate; BSA, body surface area; CO, cardiac output; MI, mass index; MM, myocardial mass; SV, stroke volume.