Showing 4 results for Patellofemoral Pain
Elahe Omidvar, Malihe Hadadnezhad, Mehdi Khaleghi Tazeji,
Volume 0, Issue 0 (11-2019)
Abstract
The study aimed to investigate the impact of gait retraining using verbal feedback on pain and peak vertical ground reaction force in runners with patellofemoral pain syndrome, a common treatment and prevention method for the condition that involves modifying movement patterns to ensure knee joint stability. The current research was applied, and a semi-experimental study method with a pre-test-post-test design was used. The statistical sample of this research was made up of 20 runners with patellofemoral pain syndrome who were identified by a physiotherapist using the Clark test and were randomly divided into two control and experimental groups. The experimental group performed eight weeks of running and three sessions per week along with the walking retraining protocol with verbal feedback from the researcher, while the control group did not receive any intervention to their exercise. The variables studied in this research were the pain factor and the peak vertical ground reaction force, which were recorded respectively using a visual analog scale and a Bartek dynamometer with a sampling frequency of 1000 Hz in both pre- and post-test stages. The results of the the mixed analysis of variance test with repeated measurements showed that the interactive effect of time on the group was significant and, the gait retraining protocol by verbal feedback reduced pain (P=0.000) and the peak vertical ground reaction force in the experimental group (P=0.003). The existence of differences in pain variables and peak ground reaction force during running confirms the need to use different strategies in the training of athletes. It is suggested that trainers have a special look at the gait retraining approach by verbal feedback to correct the movement pattern while running, in rehabilitation, and specialized exercises.
Mr Mohammad Shahpoori, Dr Amir Letafatkar, Dr Ali Abbasi,
Volume 0, Issue 0 (11-2019)
Abstract
Introduction: Patellofemoral pain is one of the most common orthopedic knee problems in runners. The Pose model is an instructor-led gait training program that aims to modify gait to reduce the risk of injury. Therefore, the aim of the present study was to investigate the immediate effect of modifying the running kinematic pattern using the Pose model on kinematic factors associated with patellofemoral pain in runners.
Materials and Methods: The present study was a field trial in which 20 healthy runners were divided into two groups: a control group and a gait retraining group using the Pose method. Running retraining was taught for 30 minutes, and lower limb kinematic variables including trunk angle, contralateral hip drop angle, dynamic knee valgus, knee flexion angle, and ankle dorsiflexion angle were recorded before and after the Pose intervention. SPSS20 software was used to analyze the data.
Results: The results of statistical analysis showed that using the Pose model can improve the running kinematic pattern, so that in the intervention group, the trunk angle on the right side (P<0.01) with an effect size of 0.656, the hip drop angle on the opposite side (P<0.01) with an effect size of 0.737,the dynamic knee valgus on the left side (P<0.02) with an effect size of 0.428 and on the right side (P<0.01) with an effect size of 0.583,and the maximum knee flexion angle on the left side (P<0.01) with an effect size of 0.746 and on the right side (P<0.01) with an effect size of 0.600.
Conclusion: retraining the running pattern using the Pose method as immediate feedback can affect the two-dimensional kinematics of the pelvic girdle and knee joints and improve their performance.
N Jamali, Kh Khayambashi, Sh Lenjannejadian, H Esmaeili,
Volume 18, Issue 19 (7-2020)
Abstract
Although hip muscle strengthening has been reported as an effective way to decrease PFPS symptoms, however its effect on lower extremity kinematics is less clear. The current study was done with the aim of investigating the effect of hip abductor and external rotator muscles strengthening exercises on lower extremity kinematics in static and dynamic states. In a randomized controlled trial, 33 patients with patellofemoral pain (PFP) were randomly assigned into exercise (8 female, 30±6.8 y/o, 23.8±2.6 BMI and 8 male, 31.2±7 y/o, 25.6±1.5 BMI) and control (9 female, 29.9±7.3 y/o, 23.2±3.2 BMI and 8 male, 32±6 y/o, 25.5±1.9 BMI) groups. In exercise group they received hip abductor and external rotator strengthening exercises by thera-band 3 times per week for 12 weeks under supervision by a physiotherapist. The control group did not receive any training intervention. Hip muscles strength and kinematics in static and dynamic states, were assessed at baseline and post-intervention. Repeated measures ANOVA by using SPSS were applied to assess the effects of the exercise on measured variables (α=0/05). After 12 weeks of strengthening program, by an increase in abductor muscle strength in women from 19.6 to 26.4 %BW (P=0.000) and in men from 29.9 to 38.1 %BW (P=0.003), and in hip external rotator muscles in women from 13.2 to 16.9 %BW (P=0.024) and in men from 26.3 to 34.9 %BW (P=0.000), dynamic knee valgus angle during single-legged squat improved in women from 170 to 174.6 degrees (P=0.018) and in men from 171.8 to 176.8 degrees (P=0.017) and contralateral pelvic drop angle during stair descending improved only in women from 7.9 to 6 degrees (P=0.04) in the exercise group. No significant difference was observed at quadriceps angle (P≥0.05). The findings suggest that hip muscles strengthening can alter the lower extremity kinematics, in dynamic state, at the frontal plane, and it might be said that due to these changes following hip abductor and external rotator muscles strengthening exercises by thera-band, the symptoms of PFP improve more consistent.
Soroush Shah Hosseini, Amir Hossein Barati, Mohammad Hossein Nasermeli, Mohsen Moradi,
Volume 18, Issue 20 (11-2020)
Abstract
Given that more than 50 percent of patellofemoral pain syndrome include of overuse injuries, the aim of this study was to compare the vastus medialis muscle activity in individuals with patellofemoral pain syndrome after a period of strength and flexibility training with and without the electrophysiological feedback. A total of 30 subjects (15 men and 15 women) participated in this study. Subjects were divided into three group's control, therapeutic and therapeutic with electrophysiological feedback. One-way ANOVA was used to compare the activity of vastus medialis muscle in between groups. The results of this study showed that there was a significant difference between the groups in the activity of the vastus medialis muscle activity (P <0.05). The results of Tukey's post hoc test for intra-group comparisons showed that there was a significant difference between the control group with the therapeutic group (P = 0.024), the control group with the therapeutic group and the electrophysiological feedback (P=0.028) and the therapeutic group with the therapeutic group and the electrophysiological feedback (P<0.001). Conclusion: Regarding the results of this study, therapeutic exercises with electrophysiological feedback have a greater effect on the activity of vastus medialis than the therapeutic group in patients with patellofemoral pain syndrome.
