Effects of blood flow-restricted exercise training on quadriceps muscle strength,foot deflection,and plantar impulse in patients with anterior cruciate ligament reconstruction
Objective:To investigate the effects of blood flow-restricted exercise training on quadriceps muscle strength,foot deflection,and planar impulse in patients with anterior cruciate ligament reconstruction.Method:A total of 102 patients with anterior cruciate ligament reconstruction in our hospital from August 2020 to May 2022 were selected as research objects,and divided into a conventional group and a restricted group(n=51)according to rehabilitation methods.The conventional group was given routine rehabilitation training,and the restricted group was combined with blood flow restriction exercise training on the basis of the conventional group.After 3 m of intervention,a cross-section of the quadriceps muscle at the upper pole of the patella on the affected side of the patient was taken,and the cross-section area of the quadriceps muscle was measured by Image-Pro Plus6.0 image analysis software.Peak torque(PT),Hamstring/quadriceps(H/Q),and Peak torque/body weight(PT/BW)were measured by Biodex System4 isometric muscle strength assessment system.2m3Dbox plantar pressure plate test system was used to measure the percentage of healthy and affected lateral foot deflection,heel,and forefoot inner and outer impulse,and to calculate satisfaction,lower limb swelling,chronic pain,and other complications.Results:After the intervention,PT,H/Q,PT/BW,and the percentage of impulse inside and outside the heel were significantly increased(P<0.05),and the restricted group was higher than the conventional group.After the intervention,the quadriceps cross-sectional area,medial and lateral impulse percentage of the forefoot,and deflection Angle of healthy and affected foot was significantly decreased(P<0.05),and the quadriceps cross-sectional area of the restricted group was higher than that of the conventional group,medial and lateral impulse percentage of forefoot and deflection Angle of affected foot were lower than that of the conventional group(P<0.05).There was no difference in the Angle of the healthy lateral foot between the two groups before and after intervention(P>0.05).The satisfaction rate of the restricted group was higher than that of the conventional group(P<0.05).There was no difference in the incidence of complications between the two groups(P>0.05).Conclusion:Blood flow-restricted exercise training can improve foot deflection Angle,regulate quadriceps muscle strength,improve plantar impulse level,improve satisfaction,and have good safety.