Table 4.
Results obtained from spectroscopy examination of the erector spinae muscle.
| Group | CON | FM | Statistics | ||||
|---|---|---|---|---|---|---|---|
| Variables | n | Mean | SD | n | Mean | SD | p-value |
| PCr (mM) | 30 | 40.06 | 8.54 | 32 | 34.07 | 11.49 | 0.024 * |
| Pi (mM) | 30 | 5.68 | 1.84 | 32 | 5.29 | 1.76 | 0.409 |
| ATP (mM) | 30 | 8.64 | 1.49 | 32 | 7.57 | 1.91 | 0.017 * |
| pH | 30 | 7.03 | 0.03 | 32 | 7.03 | 0.03 | 0.514 |
| Ratio ATP/Ptot | 30 | 0.30 | 0.02 | 32 | 0.30 | 0.02 | 0.897 |
| Ratio PCr/Ptot | 30 | 1.37 | 0.06 | 32 | 1.30 | 0.13 | 0.018 * |
| Ratio Pi/Ptot | 30 | 0.19 | 0.03 | 32 | 0.20 | 0.03 | 0.098 |
| Ratio ATP/PCr | 30 | 0.22 | 0.02 | 32 | 0.23 | 0.04 | 0.101 |
| Ratio Pi/PCr | 30 | 0.14 | 0.03 | 32 | 0.16 | 0.04 | 0.017 * |
CON = controls; FM = fibromyalgia; SD = standard deviation; PCr = phosphocreatine; Pi = inorganic Phosphate; Ptot = total phosphorus; ATP = adenosine triphosphate. * denotes statistical significance.