A Comparative Study On The Effect Of Dynamic/Static Core Strength Training To Rehabilitation Of Lumbar Muscle Strain

Objective:With more people interested in kinds of sports, there are diverse sports injuries, especially certain specified physical injury due to the weakness of physical quality, such as lumbar muscle strain and so on. Some of the injured have trouble in normal training as well as performance improvement while other serious on es have no choice but take a long-term rest,which badly impact on people’s daily life. Recent studies have emphasized the active exercise rehabilitation therapy on chronic lumbar muscle strain. In this study,16 patients of lumbar muscle strain from Xi’an Physical Education University are regarded as the experimental subjects. Through the core strength of dynamic and static exercises, the study explores the rehabilitation effects of two therapy on lumbar muscle strain, in the hope of providing a theoretical reference and training parameters for the majority of patients with lumbar muscle strain, but also obtaining an empirical basis for rehabilitation training.Research Methods:16 patients with lumbar muscle strain are divided into two groups:static and dynamic core exercise groups, each group consisting of 8 persons. Group A were treated with static support, trained with four kinds of movement:the Supine Static Support, Prone Static to upport, Right Static Support and Left Static Support. The first four weeks is the rehabilitation exercises performed in steady state and the next four weeks Swiss ball is used to do rehabilitation exercise. Group B mainly uses four kinds of dynamic strength exercises, including Situps Leg Curl-up, Lateral goat left side bend, Goats in the stand and frame UPS and goats to the right side of the body frame. The two groups take exercise three times a week separately. After the training for eight weeks, ISOMED 2000 okinetic testing instrument is applied to the subjects for abdominal and back muscles of isokinetic muscle strength test. For the evaluation of lumbar muscle strain recovery, the study focus mainly on the following aspects:the pain, spinal mobility, muscle strength of waist and abdominal flexion and extension, the assessment ratio, Oswestry disability index.Results:(1) â‘ The capability to move in Group A has increased by60.28% while Group B by 26.63% after the practice of recovery.â‘¡ In the aspect of decreasing pain, the rate of Group A has reduced by83.27% and Group B by 72.37%.(2) â‘ In the patterns of 60°/s and 180°/s the flex of Group A come up to 5.34% and 6.78% in the form of PT/BW. In the patterns of 60°/s and 180°/s, the extensors of the samples in Group A are 16.01% and 21.17%as far as Relative peak torque value increase is concerned.; In the patterns of 60°/s and 180°/s the flexo of Group B come up to 7%å'Œ 11.66% in the form of PT/BW. The extensors of the samples in Group B at the speed of 60°/s and 180°/s are7.42% and 9.25%. â‘¡ Extensor muscle of Group A F/E decreased by9.33% and 9.21% at the speed of 60°/s and 180°/s after the training. Extensor muscle of Group B F/E increased by 1.2% at the pattern of 60°/s while F/E at the pattern of 180°/sdecreased by 1.28%. (3) â‘  The relative total power of flexor in group A increased by 4.97%å'Œ 18.99% at the pattern of 60°/s and 180°/s separately. Extensor relative total power increased by 28.28% and 20.15%.The relative total power of flexor in group B decreased by 1.02% in the pattern of60°/, while it increased by 14.13% in the pattern of 180°/s; Extensor relative total power in Group B increased by4.51% and 11.61% in the patterns of 60°/s and 180°/s.â‘¡ The changing tendency at the waist flexor and extensor total flexion is almost the same in the two groups. Total flexion of Group A reduced by17.86%å'Œ 7.58% separately in the pattern of60°/s and 180°/s after the training. Total flexion of Group Breduced by 4.82% in the pattern of 60°/s, while it remain the same in the pattern of 180°/s after the training. (4) â‘ The relative maximum power of flexor and extensor muscle bothincreased in the two groups after the training. The relative maximum power of flexo in Group A increased by 6.36% and 6.14%in the pattern of 60°/s and 180°/s. The relative maximum power of extensor increased by 14.29% and 10.26%. The relative maximum power of flexo in Group B increased by22.84% and 6.19% in the patterns of 60°/s and 180°/sseparately,while the relative maximum power of flexoincreased by 30.69% and 10.16%。②The rates of maximum flexor flexion and extension in Group A decreased by 8.43% and 3.57% in the patterns of 60°/s and 180°/s while in Group B they were7.41% and 3.28% in the patterns of 60°/s and 180°/s。(5) â‘ The relative maximum power of flexor in Group A increased separately by 5.45% and 10% in the pattern of 60°/s and 180°/s while the relative maximum power of extensor by 10.29% and 14.86% separately. The relative maximum power of flexor in Group B increased separately by 8.93%å'Œ16% in the pattern of 60°/s and 180°/s while the relative maximum power of extensor by28.79%å'Œ 14.86% separately. â‘¡The maximum power of flexion and extension flexion show the tendency of decrease in the two groups. The maximum power of flexion and extension flexion in Group A decreased by4.94% and 4.41% in the patterns of 60°/s and 180°/s. The maximum power of flexion and extension flexion in Group B decreased by 15.48% while it decreased by 1.47% in the pattern of 180°/s.Conclusion:Respectively comparing and evaluating the statistics before and after rehabilitation, the author gets the following results:(1) In the BRS6 score, static exercise rehabilitation group is better than dynamic exercises group on the effect of recovery in spinal mobility.(2) Static exercise group can effectively improve the lumbar muscle strength of waist, abdominal endurance, balance ability, and effectively improve the indicators of lumbar muscle strain. However, the training effects in Static exercise group from the points of Maximum work and Maximum power are as good as those in dynamic exercise group.(3) Static exercise group is better than the dynamic exercise group on the effect of the Oswestry disability index.