The effect of adding eccentric exercises to gait retraining exercises on pain, kinetics and kinematics of runners with patellofemoral pain syndrome

Are adding eccentric exercises to gait retraining exercises have any effect on pain, kinetics and kinematics during running in patients with patellofemoral pain?

Clinical trial that including control group, parallel groups, single blinded, randomized, 3 groups on 30 patients, The site /http://randomizer.org is used for randomization.

The effect of adding eccentric exercises to gait retraining exercises on runners with patellofemoral pain. The kinetics and kinematics parameters are performed before and after 8 weeks of intervention in the biomechanical laboratory of Kharzami University. Participants and Analyzer are unaware of how the allocation and results are.

inclusions: Male and female runners with 3 years continuous history of recreational sports; 18 to 40 years old age group, 20 and 25 body mass index patients have a patellofemoral pain syndrome with a history of 2 months and intensity of 3 to 7 on the visual analog scale. exclusions: history of lower and torso injury in the past year, lower limb abnormalities, surgery in the lower limbs, especially the knee, before participating.

The retraining group includes patients that have patellofemoral pain and receive gait retraining with using verbal feedback. the eccentric exercises Group includes patients who receive eccentric exercises in addition to gait retraining. the control group includes patients who do not receive any intervention. both groups participate 3 sessions each week for 8 weeks with the presence of the researcher. each session take 90 minutes includes warm up, exercise and cooling down. eccentric exercises are based on previous studies of patellofemoral pain.

Pain, ground reaction force, pelvic drop, hip adduction, knee flexion, knee valgus and dorsiflexion.

After initial review, using the http://randomizer.org/ website, patients who have criteria for entering the study randomly participate in retraining، eccentric exercises and control groups. randomization will be simple type. hiding the random allocation using computer-generated randomized block table ( number 1 for retraining group, number 2 for eccentric exercises group and number 3 for control group ). The random numerical sequence is placed in non-transparent and sealed envelopes and will be opened by a third party and the treatment process will continue in accordance with the group's assignment. the evaluator will evaluate the results before the intervention and after 8 weeks of intervention, independent of the hypothesis and methods of the study.

Participants read the consent form and present in a 30-minute session of the study groups then participate in this study with satisfaction, without the authority to select their group. the names of the patients are informed by a person unaware of the identity characteristics and Physically, patients randomly divided into three equal groups by / http://randomizer.org and each group is placed separately in sealed envelopes. Each person receive own training and exercises according to their assigned group. the analyzer also examines and compares changes made before and after 8 weeks without knowing the hypotheses, study methods, and patient specifications.

Only data related to demographic information and consequences are shared.

After printing the article / articles are arrogant from the study

The data can be displayed and shared at the logical request of the Iranian Clinical Trials Registration Center, journals and academic researchers / researchers who are researching and conducting scientific activities in this field.

Data analysis and the use of documentation can only be done on the condition that their results be included in the systematic review articles conducted by researchers and academic authors. Terms of registration for sending data and documents including: 1. Send an email ( preferably with valid academic addresses ) to one of the study researchers. 2. Brief and logical explanation of how to use data or documentation. 3. Ensure the registration of a systematic review study protocol that has given access to data or documentation.

By requesting study researchers Elahe Omidvar Elahe.omidvar@khu.ac.ir Malihe Hadadnezhad Malihehadadnezhad@khu.ac.ir Amir Letafatkar Amir.letafatkar@khu.ac.ir

The applicant can request details from the researchers within 7 to 10 days using the email sent by email.