基于四肢联动训练的下肢血流限制对健康青年人心肺耐力、下肢肌耐力和平衡功能的影响

目的 观察短期下肢血流限制(BFR)联合四肢联动训练对健康人心肺耐力、下肢肌耐力和平衡功能的影响。方法 2019年12月至2020年3月,选取本院健康青年人20例,随机分成对照组和试验组各10例。两组根据心肺运动试验(CPET)结果选择无氧阈水平强度进行四肢联动训练,每次20 min,每周3次,共2周;试验组于双侧大腿根部以血流加压训练带250 mmHg加压,对照组于相同位置佩戴无压力的血流加压训练带。训练前后采用CPET、6分钟步行测试、靠墙静蹲、座椅试验、功能性前伸试验进行评定。结果 训练后,除功能性前伸试验外,两组各项测试成绩均提高(|t| > 2.321, P < 0.05),试验组靠墙静蹲和座椅试验成绩高于对照组(t > 2.660, P < 0.05)。结论 下肢BFR基础上行四肢联动训练有助于进一步提高下肢肌耐力。

Effects of Short-term Lower Extremity Blood Flow Restriction Based on Limb Linkage Training on Endurance of Cardiopulmonary Endurance,Lower Extremity Muscle Endurance and Balance Function of Healthy Young People

Objective To observe the effects of short-term blood flow restriction (BFR) based on limb linkage training on cardiopulmonary endurance, lower limb muscle endurance and balance function of healthy people.Methods From December, 2019 to March, 2020, 20 healthy young people were randomly divided into control group (n = 10) and experimental group (n = 10). They accepted limb linkage training with the loading of anaerobic threshold (AT) according to the results of cardiopulmonary exercise test (CPET), 20 minutes a time, three times a week, for two weeks; while the experimental group wore 250 mmHg blood pressure training belt at the root of both thighs; the control group wore blood pressure training belt with no pressure. They were assessed with CPET, 6-minute walking test, wall squatting, seat test and functional reach test before and after training.Results After training, all the indexes improved in both groups (|t| > 2.321, P < 0.05), except functional reach test, the results of wall squatting and seat test were better in the experimental group than in the control group (t > 2.660, P < 0.05).Conclusion Limb linkage training combined with lower extremity BFR could further improve lower limb muscle endurance.