背景:虽然前交叉韧带(ACL)撕裂通常通过ACL重建(ACL-R)进行处理,35%的ACL-R个人未能恢复到受伤前的精英运动水平。已观察到腿筋和股四头肌的持续神经肌肉缺陷。有人提出,水生疗法可用于优化ACL-R后的神经肌肉控制。
目的:(1)比较在不同水深的水中跑步机(ATM)运行时ACL-R个体的肌肉活动;(2)比较ACL-R和健康个体在ATM运行时的肌肉活动。
方法:共有38名参与者,纳入18名ACL-R个体(平均术后时间[SD]=25.8[25.0]mo)和20名健康个体。股二头肌(BF)的肌肉活动,股直肌(RF),胫骨前肌,在陆地跑步机和自动取款机在小腿中部运行时,腓肠肌内侧,大腿中部,使用表面肌电图(sEMG)记录腰部水平。将所选肌肉的sEMG信号标准化并以最大自愿收缩%(%MVC)表示。ACL-R的肌肉活动,ACL-对侧,比较了不同水深的健康对照肢体。
结果:在3组中,ACL-R组表现出最显着的百分比增加101.97%(P=0.001)在胫骨中部水平,大腿中部139.66%(P=.001),腰部水平为141.97%(P<.001),分别,与土地相比,以%MVC表示。在ACL-R组中,在所有水深的陆地上,BF在站立期(BFSt)的肌肉活动均显着高于对照组。与陆地相比,ACL-R组的摆动阶段(RFSw)中的RF肌肉活动在所有水深浸没中均显着增加,分别。
结论:这项研究表明,在增加水深的ATM运行过程中,ACL-R个体的BFSt和RFSw肌肉活动呈增加趋势。ATM跑步可以作为ACL-R后康复中的神经肌肉训练。
BACKGROUND: While anterior cruciate ligament (ACL) tears are commonly managed with ACL reconstruction (ACL-R), 35% of ACL-R individuals fail to return to the preinjury elite sport level. Persistent neuromuscular deficits in the hamstrings and quadriceps have been observed. It has been proposed that aquatic therapy can be used to optimize neuromuscular control after ACL-R.
OBJECTIVE: (1) To compare muscle activity in ACL-R individuals during aquatic treadmill (ATM) running at different water depths and (2) to compare muscle activity during ATM running between ACL-R and healthy individuals.
METHODS: A total of 38 participants, including 18 ACL-R individuals (mean postoperative time [SD] = 25.8 [25.0] mo) and 20 healthy individuals were recruited. Muscle activity of biceps femoris (BF), rectus femoris (RF), tibialis anterior, and medial gastrocnemius during land treadmill and ATM running at mid-shin, mid-thigh, and waist levels were recorded using surface electromyography (sEMG). The sEMG signals of the selected muscles were normalized and expressed in % Maximal Voluntary Contraction (%MVC). Muscle activity of the ACL-R, ACL-contralateral, and healthy control limbs at different water depths was compared.
RESULTS: Among the 3 groups, the ACL-R group demonstrated the most prominent percentage increase of 101.97% (P = .001) at mid-shin level, 139.66% (P = .001) at mid-thigh level, and 141.97% (P < .001) at waist level, respectively, in %MVC when compared to land. In the ACL-R group, muscle activity of BF in the stance phase (BFSt) was significantly higher than the control group on land at all water depths. Muscle activity of RF in the swing phase (RFSw) in the ACL-R group significantly increased in all water depths immersion when compared to land, respectively.
CONCLUSIONS: This study showed an increasing trend in muscle activity of BFSt and RFSw in ACL-R individuals during ATM running at increased water depths. ATM running could be implemented as neuromuscular training in rehabilitation after ACL-R.