Isokinetic exercise in rehabilitation (original) (raw)
Related papers
Isokinetic Equipment Designed For Therapeutic Exercises
Proceedings of …, 2009
The paper presents a type of isokinetic equipment that achieves continuous passive rehabilitation movements as part of the recovery program of patients with post-traumatic disabilities of the bearing joints of the inferior limbs. International studies have revealed that the deployment of ...
An Adequate Interset Rest Period for Strength Recovery During a Common Isokinetic Test
Journal of Strength and Conditioning Research, 2013
Isokinetic testing is used in rehabilitation settings on a regular basis; yet, there is a lack of consistency in rest period usage among protocols. Furthermore, the allotment of rest periods has been arbitrary (e.g., 30, 60, 90 seconds or more). This investigation examines the work:rest ratio as an effective method of standardizing rest periods in isokinetic testing. The purpose of this study was to establish an adequate rest period that would allow reproducibility of strength during a common isokinetic strength test. Twenty-seven healthy college-aged men (age, 23 6 3.8 years; body weight, 79.54 6 11.09 kg) were tested on 5 separate occasions: 2 familiarization sessions and 3 experimental sessions. Each subject performed a knee extension/flexion isokinetic strength protocol (Cybex NORM; Lumex, Inc., Ronkonkoma, NY, USA) to determine peak torque by performing 5 maximal reciprocal repetitions at each ascending velocity of 60, 180, and 3008$s 21. Work:rest ratios of 1:3, 1:8, and 1:12 were counterbalanced between sets. A 3 3 3 repeated measures analysis of variance was used to analyze the data. A significance level of a # 0.05 was used for all tests. There was no significant difference in either knee extension or knee flexion peak torque when comparing work:rest ratios. These findings suggest that a 1:3 work:rest ratio is sufficient during a common isokinetic strength test.
Specificity of Training on Computer-Obtained Isokinetic Measures
Journal of Orthopaedic & Sports Physical Therapy, 1989
The purpose of this study was to examine the effects of 7 weeks of isokinetic training on knee extension and flexion peak torque, torque acceleration energy, average power, and total work, and to observe the relationship between the increases in each of the isokinetic measures. Seventeen intercollegiate lacrosse players served as subjects and were assigned to an exercise or control group. lsokinetic training consisted of 3 sets of 25 repetitions at 270°/sec, 3 days per week for 7 weeks on an orthotron isokinetic dynamometer. All subjects were tested on a CybexdE isokinetic dynamometer at speeds of 60, 180, and 270 O/sec pre-and post-exercise or control condition. Results showed a significant training effect at 270°/sec for knee extension peak torque, torque acceleration energy, and average power, and knee flexion torque acceleration energy. High correlations were observed between the increases in peak torque, average power, and torque acceleration energy. These findings suggest that increases in average power, peak torque and instantaneous power may be expected as a result of isokinetic exercise training in healthy athletes.
Isokinetic strength aspects in human joints and muscles
Applied Ergonomics, 1991
The isokinetic concept of exercise has become an increasingly popular means to assess musculoskeletal function. The isokinetic apparatus enables the control of angular velocity of the moving limb (which is held constant during the range of movement) whilst giving an accommodated resistance. The resistance produced by the device is accommodated to the net external moment exerted by the subject. Some of the advantages of isokinetic assessment are discussed. However, a number of restrictions and limitations should be considered when interpreting these strength measurements. . 1984, J ApplPhysiol, 57,435-443. Muscle architecture and force-velocity curve relationships in humans.
Journal of Human Kinetics, 2011
The aim of this study was to investigate the effects of two training protocols on the isokinetic performance of athletes. The study was conducted in 38 athletes, (age 23.3 ± 3.6 years) participating in national level leagues of different sports, whose initial concentric hamstrings-to-quadriceps (conH/Q) torque ratio was lower than 0.5. During seasonal testing, an isokinetic measurement of knee extensors and flexors was performed at 60º/s. The athletes were divided into two groups. Nineteen athletes performed the isokinetic training protocol (IT) while the second group of 19 athletes followed the isotonic training protocol (RT). Both protocols lasted 4 weeks. After completing the training protocols, both groups underwent a final isokinetic testing. The isokinetic data revealed significant increases after training in measures of peak torque in both extensor and flexor muscle groups, in both the IT and RT study groups (p < 0.05). There were significant increases (p< 0.05) in conH/Q ratio in both groups after the implemented protocols, but greater in IT group. Consequently, applied IT protocol induced changes in working muscles, thereby restoring detected asymmetry to an acceptable balance more efficiently compared to RT protocol.
Development of a Control Strategy in an Isokinetic Device for Physical Rehabilitation
Physical rehabilitation aims to help people recover their mobility and strength after an injury or illness. One way to evaluate progress in rehabilitation is through isokinetic prototype tests that describe the dynamic characteristics of an isokinetic leg extension device for rehabilitation and control action. These tests use an isokinetic system to assess muscle strength and performance in a patient during isometric or isokinetic contraction. An experimental prototype allows the performance of the device to be evaluated in a controlled environment prior to use by the patient. In order to achieve physical recovery from musculoskeletal injuries in the lower limbs and achieve the reintegration of the affected subject into society as an independent and autonomous individual in their daily activities, a control model is presented that introduces a medical isokinetic rehabilitation protocol, where the element that allows carrying out such protocol consists of a magnetic particle brake wh...
Effect of Isokinetic Training on Quadriceps Muscle Strength in Osteoarthritis of Knee
2018
The aim of the present study was to investigate the role of Isokinetic Training and Electromyography biofeedback training in improving the strength of the quadriceps femoris in participants with osteoarthritis of the knee. Fifty-four participants (male and female) in the age range of 50-63 years with knee Osteoarthritis of Grade II and III (Kellgren-Lawrence criteria) severity were recruited from the Department of Orthopedics, Hospital Universiti Sains Malaysia. The selected participants were taken to the Exercise and Sports science laboratory and the laboratory of the School of Medical Sciences, Universiti Sains Malaysia for baseline assessment. The extent of muscle strength was assessed employing the isokinetic device BIODEX 4 System Pro. On completion of the baseline assessment, the participants were randomly categorized into three groups (Gr.) (Viz. Gr. A, Gr. B, Gr. C and Gr. D) and thus each group consisted of eighteen participants. Participants of the Gr. A received Conventional Physiotherapy consisting of strengthening exercises; stretching exercises and range of motion exercises. Gr. B received Isokinetic Training at velocities of 90° and 150°/second. Gr. C participants received EMG Biofeedback training with Mega ME 6000 device. All the interventions were imparted for 25 - 30 minutes per session; 2 sessions per week for10 weeks (20 sessions). Mid intervention assessment was done after the 5th week followed by the post-intervention assessment after the 10th week following baseline assessment protocol. After the post-intervention assessment, the participants were instructed not to attend the training session for the next 8 weeks and not to get engaged in any sort of physical training, exercise or sports programme. The issue of sustainability was also verified by the post-follow-up assessments of all of the variables following identical assessment protocols after the 14th and completion of the 18th week. The repeated measure of ANOVA revealed that Isokinetic Training was beneficial in enhancing muscle-strength of quadriceps femoris (p<.05)
Journal of rehabilitation medicine, 2011
To evaluate the improvement rate of quadriceps muscle peak torque in healthy subjects and patients with burn injuries after an isokinetic training programme. Thirty male volunteers, 15 healthy and 15 subjects with burn injury after complete healing, participated in the study. Concentric and eccentric torque of quadriceps was measured for both groups using an isokinetic dynamometer before and after 6 weeks of isokinetic training. The tests were performed at angular velocities of 30°/s and 90°/s. There was a significant increase in the quadricep speak torque for both groups at both angular velocities after isokinetic training. During eccentric contraction at angular velocities of 30°/s and 90°/s the percentage improvement in the burned group was higher than in the healthy group(p = 0.003 and p = 0.0008, respectively). During concentric contraction at an angular velocity of 30°/s the percentage improvement in the burned group was higher than the healthy group (p = 0.020). However, duri...