Table 4.
31P–MR measures of mitochondrial function measured and derived from the dynamic examinations in five subjects with different knee angulations (0° and ~60°) (n = 5)
GL | GM | SOL | ||||
---|---|---|---|---|---|---|
Knee flexion [°] | 0 | 60 | 0 | 60 | 0 | 60 |
PCr drop [%] | 75.4 ± 17.0 | 24.2 ± 12.7§ | 68.4 ± 24.9 | 20.4 ± 9.2§ | 18.0 ± 8.5 | 43.2 ± 19.1* |
τ PCr [s] | 60.8 ± 10.1 | 57.7 ± 24.9 | 58.5 ± 21.7 | 58.7 ± 11.9 | 70.3 ± 12.0 | 42.5 ± 6.9§ |
pH end_exercise | 6.76 ± 0.15 | 6.94 ± 0.07* | 6.76 ± 0.20 | 7.00 ± 0.05* | 6.93 ± 0.14 | 6.93 ± 0.14 |
V PCr [mM/s] | 0.47 ± 0.08 | 0.24 ± 0.13* | 0.43 ± 0.18 | 0.21 ± 0.09* | 0.12 ± 0.07 | 0.47 ± 0.27* |
Q max [mM/s] | 0.60 ± 0.13 | 0.44 ± 0.18 | 0.59 ± 0.22 | 0.45 ± 0.15 | 0.33 ± 0.14 | 0.80 ± 0.34* |
Data are given as mean ± standard deviation. Significant differences between exercise protocols are depicted as follows:
p < 0.05 and
p < 0.01.