ObjectiveTo observe the effectiveness of core endurance isokinetic strength training on subacromial impingement syndrome (SAIS) rehabilitation.MethodsSAIS patients were selected from the Rehabilitation Department, Second Affiliated Hospital of Inner Mongolia Medical University from January 2018 to June 2019. The patients were randomly divided into observed group and control group by random number table method. The patients in control group were treated by keritherapy, cold, standard physiotherapy (PT) and exercise. At the same time, the patients in observed group were treated by core endurance isokinetic strength training combined with keritherapy, cold and standard PT. Both two groups were treated for 8 weeks. The patients were scored with visual analogue scale (VAS), Shoulder Pain and Disability Index (SPADI), Short Form 36 Healthsurvey Questionnaire (SF-36), flexor peak torque (FPT) and extensor peak torque (EPT) in pre and post treatment.ResultsA total of 59 patients with SAIS were enrolled. No exfoliating cases. There were 31 cases in the observed group and 28 cases in the control group. Pre-treatment, there were no significant difference in FPT, EPF, VAS, SPADI and SF-36 between the two groups (P>0.05). Post-treatment, there were no significant difference in EPT and VAS between the two groups (P>0.05); FPT [(62.65±10.17) N·m], SPADI [(53.18±10.25) points] and SF-36 [(35.54±11.39) points] in the observed group were significantly improved compared with the control group [(56.28±9.55) N·m, (61.05±9.41) points, (42.65±10.74) points] (t=2.473, 3.061, 2.460; P=0.014, 0.003, 0.017); FPT in both groups, and EPT in the observed group were improved compared with that of the pre-treatment (P<0.05); the EPT of the control group was improved compared with that of the pre-treatment, but the difference was not statistically significant (P>0.05); VAS, SPADI and SF-36 in the two groups were improved compared with those of the pre-treatment (P<0.05).ConclusionsCore endurance isokinetic strength training could improve the core stability of subacromial impingement syndrome patients. Satisfactory musculoskeletal dynamic chain plays a vital role in subacromial impingement syndrome rehabilitation.