Effects Of Neuromuscular Electrical Stimulation Combined With Lower Limb Resistance Training On Quadriceps Femoris Muscle In Patient With Stable COPD

Objective: To explore the effects of neuromuscular electrical stimulation combined with lower limb resistance training on quadriceps femoris function in stable COPD patients.Methods: Sixty patients with stable COPD who voluntarily participated in the pulmonary rehabilitation program were selected and divided into rehabilitation group A(n=20),rehabilitation group B(n=20)and control group(n=20)according to random number table method.The control group was given COPD education and breathing instruction on the basis of conventional drug therapy.Rehabilitation group A received 8 weeks of neuromuscular electrical stimulation combined with lower limb resistance training on the basis of the intervention of control group.Rehabilitation group B was given quadriceps resistance training alone for 8 weeks.At week 0,4 and 8,the recruited patients were assessed for quadriceps muscle strength,quadriceps muscle endurance,walking ability,lower limb muscle function,lung function,mental state,daily living ability,Bode index test,and body mass index.Wilcoxon rank sum test was used for statistical analysis,and P<0.05 was considered a significant difference.RESULTS: Sixty eligible patients were recruited from July 2020 to October2020.After 8 weeks of training,the walking ability,muscle function of lower limbs,muscle strength of quadriceps femoris and lung function of rehabilitation in group A were significantly improved comparing with control group(P<0.05),the walking ability,quadriceps muscle strength and lung function of rehabilitation in group B were significantly improved comparing with control group(P<0.05),the walking ability and quadriceps femoris muscle strength of rehabilitation group A were significantly improved compared with that of rehabilitation group B(P<0.05).There were no significant differences in quadriceps muscle endurance,daily living ability,Bode index test,mental state and body mass index among all groups.Conclusion: Neuromuscular electrical stimulation combined with lower limb resistance training can significantly enhance the muscle strength and walking ability of quadriceps femoris in COPD patients compared with simple lower limb resistance training.