Table 3. CSA values of paraspinal muscles in the resting state and in different recovery sessions after exercise (mm2).
| Spinal level | Session | Iliocostalis | Longissimus | Multifidus |
|---|---|---|---|---|
| L3 | Resting state | 1,512.05±471.70 | 858.00±348.34 | 499.15±119.91 |
| Recovery I | 1,606.70±529.94 | 992.30±389.85* | 570.40±75.44* | |
| Recovery II | 1,682.75±570.03 | 1,325.90±466.71* | 613.40±162.69* | |
| Recovery III | 1,454.00±398.56 | 1,045.65±239.11* | 484.60±108.38 | |
| Recovery IV | 1,571.25±572.58 | 978.40±317.39* | 542.40±195.58* | |
| F | 0.6 | 4.542 | 2.993 | |
| P value | 0.664 | 0.002 | 0.023 | |
| L4 | Resting state | 1,606.10±482.69 | 602.90±145.38 | 752.05±204.43 |
| Recovery I | 1,755.60±536.57 | 714.50±181.99* | 862.20±253.42* | |
| Recovery II | 1,634.80±518.93 | 1,034.45±331.01* | 954.65±268.63* | |
| Recovery III | 1,368.60±362.09 | 902.35±217.94* | 801.85±134.56 | |
| Recovery IV | 1,425.40±552.00 | 885.75±277.05* | 884.25±244.50* | |
| F | 1.924 | 10.277 | 2.593 | |
| P value | 0.113 | <0.001 | 0.041 |
All values are mean ± standard deviation. *Compared with resting state, P<0.05. CSA, cross-sectional area.