1. School of Kinesiology, Shanghai University of Sport, Shanghai 200438;
2. School of Physical Education and Sport Trainning, Shanghai University of Sport, Shanghai 200438;
3. Institution of Sports of Hubei Nationalities College, Enshi 445000;
4. School of Physical Education and Sport Trainning, Shanghai University of Sport, Shanghai 200438, China
Objective: To investigate the effects of intermittent negative pressure therapy on the skin microcirculation perfusion of quadriceps in male rowers, and to provide basis for the practical application of this method.
Methods: Fourteen male rowers were selected from the national (Chinese) rowing team and randomly divided into experimental and control groups. The daily training plans of the two groups were the same. The recovery intervention for the experimental group was implemented by 20 minutes in the tube of Vacusport Regeneration System (German), 5 times per week for 4 weeks, no recovery intervention for control group. Microcirculation markers were collected by PeriFlux5000 system before and after the 4-week intervention. The markers included microcirculatory blood perfusion (MBP), average velocity of blood cells(AVBC), concentration of moving blood cells (CMBC), and values of the markers included basic values and post-heating values (44℃), difference before and after heating of the values was considered as the reserve capacity of those markers.
Results: The test results before the 4 weeks intervention showed there was no statistical difference between the two groups(P＞0.05). After the 4 weeks intervention:
① MBP: The post-heating value and the difference of the experimental group were significantly higher than those of the control group (P＜0.05). But there was no statistical inner-group difference.
② AVBC: The post-heating values and the difference in the experimental group were significantly lower than those in the control group (P＜0.05). Intra-group comparison found that the post-heating values after post-intervention were significantly reduced, compared with those of pre-intervention (P＜ 0.01); the difference after post-intervention was reduced significantly, compared with those in the pre-intervention (P＜0.05).
③CMBC: The post-heating values and the difference in the experimental group were significantly higher than those in the control group (P＜0.01). There were no statistical significant inner-group difference.
Conclusion: Lower limb intermittent negative pressure therapy can improve the skin microcirculation of the quadriceps of the male rowers, which has a positive effect on the rapid recovery of physical fitness.
Original study in Chinese Journal of applied Physiology, Online:2019-03-28 Published:2019-06-27. Dowonload http://manu37.magtech.com.cn/Jwk_jsyxkx/cjap/EN/10.12047/j.cjap.5727.2019.028