Table 3.
Pearson correlations, z transformation of r and Student’s t statistic between net PF MVC and leg lean mass against a series of descriptive variables in young and old untrained females
| Young | Old | Correlation coefficient | Ageing effect | |||||
|---|---|---|---|---|---|---|---|---|
| n | r value | slope | n | r value | slope | z transformation of r | Student’s t statistic | |
| PF MVC vs. leg lean mass | 54 | 0.79*** | 19.63 | 48 | 0.51*** | 12.48 | 1.95 | 1.90 |
| PF MVC vs. body mass | 54 | 0.71*** | 1.26 | 48 | 0.45** | 0.75 | 1.70 | 1.85 |
| PF MVC vs. fat mass | 54 | 0.62*** | 1.70 | 48 | 0.37* | 0.92 | 1.57 | 1.70 |
| PF MVC vs. lean mass | 54 | 0.78*** | 3.70 | 48 | 0.49*** | 2.28 | 1.93 | 1.94 |
| Leg FFM vs. BM | 54 | 0.87*** | 0.06 | 48 | 0.83*** | 0.06 | 0.45 | 0.77 |
| Leg FFM vs. FM | 54 | 0.73*** | 0.08 | 48 | 0.69*** | 0.07 | 0.35 | 0.74 |
| Leg FFM vs. lean mass | 54 | 0.97*** | 0.19 | 48 | 0.95*** | 0.18 | 0.50 | 0.44 |
*p < 0.05; **p < 0.01; ***p < 0.001 (If z > 1.96, p < 0.05; z > 2.58, p < 0.01) (Student’s t statistic significance if t falls outside ±1.96 p < 0.05)