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Demographic data of subjects
| Group | Age (years) | Sex (female/male) |
| VC, n = 24 | 24.1 ± 1.5 | 15/9 |
| SMT-NC n = 23 | 25.3 ± 1.21 | 13/10 |
| SMT-C n = 29 | 24.8 ± 1.75 | 15/14 |
VC, venipuncture control; SMT-NC, spinal manipulative therapy-no cavitation;
SMT-C, spinal manipulative therapy-cavitation.
