Patellofemoral Pain Syndrome
Conditions
Interventions
Volunteers will be randomized between two groups: Group of reduced training volume - G1 (1 series per exercise)
and group with typical training volume - G3 (3 sets per exercise). For both groups, the program will include 9 weeks of training, held twice a week, with at least 48 hours between sessions.
In each se
12 repetitions in phase 2
and 8 repetitions in phase 3. Throughout the program, the load implemented in each exercise will be defined by the method of maximum repetitions (RMs). That is, the load will be increased as soon as t
Behavioural
Other
E02.760.169.063.500.387
H02.010.625
Sponsors
Nathalia Trevisol de Oliveira
Universidade Federal de Ciências da Saúde de Porto Alegre
Eligibility
Sex/Gender
Female
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: Female individuals aged between 18 and 40 years, able to carry out the training and proposed evaluations and who are willing to participate in the study on a voluntary basis after the disclosure of the work on social networks on the internet. The syndrome will be diagnosed by a physiotherapy professional with experience in managing this patient profile, based on the criteria of the American Phisycal Therapy Association guidelines consensus: presence of retropatellar or peripatellar pain; pain reproduction during the squat; performance of other functional activities such as sustained knee flexion, going up or down stairs, kneeling, running.
Exclusion criteria
Exclusion criteria: Presence of musculoskeletal injuries in the lower limbs that prevent or impair the performance of exercises and assessment; history of physical trauma involving the knees or lower limbs, such as traffic accidents, falls, bruises, in the last twelve months; body mass index (BMI)> 30; having performed a rehabilitation protocol for patellofemoral pain syndrome up to six months before data collection.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Reduced knee joint pain. Pain will be measured using the 10cm Visual Analogue Scale (VAS). The volunteer will be asked to draw a vertical line at the point on the scale that best represents her level of pain in three situations: (1) average pain felt in the last week; (2) acute pain when descending a flight of stairs; (3) acute pain when going up a flight of stairs. For this evaluation, a set of 10 steps will be considered as “flight of stairs” (that is, 5 steps up / down with the affected limb). Changes of 2cm in the VAS will be considered clinically relevant. | — |
Secondary
| Measure | Time frame |
|---|---|
| Adaptation of the capacity to produce muscle strength. It will be evaluated through the tests: isometric test on the manual dynamometer, where three maximum voluntary contractions will be performed. Each contraction will last for 3 seconds and two minutes of rest will be respected between each one to minimize possible effects of muscle fatigue. If the volunteer reaches peak strength values ??with a discrepancy greater than 10% between the three contractions, a new contraction will be requested. Finally, the highest strength value achieved between isometric contractions will be considered to be the maximum strength production capacity for the evaluated muscle group. 1RM test on the knee extension chair: Performed unilaterally, it is characterized by the highest load supported in one repetition. After selecting the load, the individual must perform as many repetitions as possible, reaching a maximum of 10 repetitions. After the test is performed, the load will be resized in order to find the maximum load for a repetition. The test will be performed again to check the load. Test 1RM in hip abduction: In lateral decubitus on a mat, the overload will be placed with shin guards at the end of the tested lower limb and the volunteer will be instructed to perform the hip abduction, keeping the knees extended until reaching a target 10º above the limb contralateral inferior, performing the greatest number of repetitions, reaching a maximum of 10 repetitions. 1RM test in external hip rotation: In lateral decubitus on a mattress, with knee flexion (90º), the overload will be placed with the use of shin guards on the final part of the thigh, just above the knee and will be oriented to perform the external rotation hip, keeping the contact of the heels until reaching a target placed above, performing as many repetitions as possible, reaching a maximum of 10 repetitions.;Evaluation of structural adaptations in the vastus lateralis, rectus femoris and gluteus medius muscles. | — |
Countries
Brazil
Contacts
Public ContactNathalia;Nathalia de Oliveira;de Oliveira
Universidade Federal de Ciências da Saúde de Porto Alegre;Universidade Federal de Ciências da Saúde de Porto Alegre
Outcome results
None listed