Table 2.
Quadriceps femoris: parameters of volume, CSA, and muscle function∗.
| Variable | Patients n = 9 |
Controls n = 9 |
p (95% CI lower; upper)∧ |
|---|---|---|---|
| QF total volume, cm3 | 2013 ± 382 (1457–2738) | 2296 ± 293 (1836–2705) | 0.004 (−447.5; −118.4) |
|
| |||
| QF mean CSA, cm2 | 60 ± 9 (46–75) | 63 ± 7 (52–72) | 0.17 (−8.7; 1.8) |
|
| |||
| QF max CSA, cm2 | 81 ± 11 (65–97) | 86 ± 9 (73–104) | 0.07 (−12.3; 0.5) |
|
| |||
| Specific strength | |||
| MVC Nm/QF total vol., Nm/cm3 | 0.094 ± 0.01 (0.08–0.11) | 0.099 ± 0.01 (0.09–0.11) | 0.36 (−0.017; 0.007) |
| MVC Nm/QF max CSA, Nm/cm2 | 2.32 ± 0.37 (1.87–2.93) | 2.62 ± 0.22 (2.30–2.96) | 0.08 (−0.64; 0.05) |
|
| |||
| Peak RFD, Nm/s | 1639 ± 319 (1383–2425) | 1950 ± 841 (1115–3913) | 0.44£§ |
|
| |||
| Muscle endurance | |||
| Number of repetitions | 38.3 ± 13.8 (19–56) | 38.6 ± 8.2 (30–54) | 0.95 (−13.6; 12.8) |
| Total workload (reps × kg), kg | 568.5 ± 206.3 (267.8–857.2) | 690.5 ± 151.4 (503.1–988) | 0.10 (−270.4; 26.5) |
∗Values are mean ± SD (range) unless otherwise indicated. ∧Comparison between groups tested by paired samples t-test unless otherwise indicated. £Log-transformed variable. §Wilcoxon signed ranks test. CSA: cross-sectional area. MVC: maximal voluntary contraction. Nm: Newton meter. QF: m. quadriceps femoris. RFD: rate of force development.