Table 2.
p values of multilevel analysis for correlated single muscle fiber with each subject group.
| Fiber type | Classification | CSA | SF (mN/mm2) | Vo (FL/s) | F (mN) |
|---|---|---|---|---|---|
| I | Age | 0.774 | 0.569 | 0.528 | 0.612 |
| Gender | 0.179 | 0.254 | 0.059 | 0.168 | |
| IIa | Age | 0.101 | 0.938 | 0.683 | 0.146 |
| Gender | 0.797 | 0.759 | 0.221 | 0.624 | |
| I/II hybrid | Age | 0.753 | 0.916 | 0.677 | 0.928 |
| Gender | 0.490 | 0.702 | 0.166 | 0.453 |
One of the multilevel analyses, linear mixed model, was used for showing the representativeness of each fiber subtype for each subject group.
Total fiber number = 212. Values are estimated as means ± SD. CSA = cross-sectional area, SF = specific force, Vo = maximum shortening velocity,
F = maximal contractile force.