Effect of portable isokinetic training on lower-limb functional rehabilitation in patients with early post-stroke hemiplegia

ZHU Houyi; ZHAO Ningning; ZHENG Mei; LI Xinglou; GONG Hui; SHI Ran

doi:10.3969/j.issn.1002-266X.2026.02.004

Abstract：Objective To investigate the application effect of portable isokinetic training on lower-limb functional re-habilitation in patients with early post-stroke hemiplegia.Methods Eighty patients with early post-stroke hemiplegia(onset≤3 months)were prospectively enrolled and randomly assigned(random number table)into the control group(n=40)and isokinetic training group(n=40).Patients in the control group received conventional comprehensive rehabilita-tion.In addition to conventional rehabilitation,patients in the isokinetic training group underwent bedside knee flexion-ex-tension training using a portable isokinetic muscle strength training system.Assessments were performed before interven-tion and after 4 weeks,including muscle tone of the paretic lower limb[modified Ashworth scale(MAS)],muscle strength of the paretic lower limb[peak torque(PT)and total work(TW)at an angular velocity of 60°/s],motor function[Fugl-Meyer Assessment(FMA)],balance function[Berg Balance Scale(BBS)],and walking ability[Holden's Func-tional Ambulation Category(FAC)].Results Before intervention,no significant difference was found in the MAS grade of the paretic lower limb between these two groups(P>0.05).After intervention,the isokinetic training group showed low-er MAS grade than the control group(P<0.05).Before intervention,there were no significant differences in PT or TW of the paretic extensors or flexors between these two groups(all P>0.05).After intervention,PT and TW of both extensors and flexors increased in both groups in comparison with the baseline,and all strength indices were higher in the isokinetic training group than in the control group(all P<0.05).Before intervention,there were no significant differences in FMA and BBS scores or FAC grades between groups(all P>0.05).After intervention,FMA and BBS scores and FAC grades in-creased in both groups compared with the baseline,and the isokinetic training group achieved higher FMA and BBS scores and higher FAC grades than the control group(all P<0.05).Conclusion Adding portable isokinetic strength training to conventional comprehensive rehabilitation in the early stage after stroke may further reduce muscle tone and improve mus-cle strength of the paretic lower limb,thereby facilitating recovery of motor,balance,and walking abilities.