Using reactive hyperemia to investigate the effect of cupping sizes of cupping therapy on skin blood flow responses.

Abstract

Various cupping sizes of cupping therapy have been used in managing musculoskeletal conditions; however, the effect of cupping sizes on skin blood flow (SBF) responses is largely unknown. The objective of this study was to compare the effect of three cupping sizes of cupping therapy on SBF responses. Laser Doppler flowmetry (LDF) was used to measure SBF on the triceps in 12 healthy participants in this repeated measures study. Three cup sizes (35, 40 and 45mm in diameter) were blinded to the participants and were tested at -300 mmHg for 5minutes. Reactive hyperemic response to cupping therapy was expressed as a ratio of baseline SBF. All three sizes of cupping cups resulted in a significant increase in peak SBF (p< 0.001). Peak SBF of the 45mm cup (9.41 ± 1.32 times) was significantly higher than the 35mm cup (5.62 ± 1.42 times, p< 0.05). Total SBF of the 45mm cup ((24.33 ± 8.72) × 103 times) was significantly higher than the 35mm cup ((8.05 ± 1.63) × 103 times, p< 0.05). Recovery time of the 45mm cup (287.46 ± 39.54 seconds) was significantly longer than the 35mm cup (180.12 ± 1.42 seconds, p< 0.05). Our results show that all three cup sizes can significantly increase SBF. The 45mm cup is more effective in increasing SBF compared to the 35mm cup.