![]() 40 Risk factors for ITBS vary, comprising both intrinsic and extrinsic factors. 3 A 2002 retrospective study of running injuries identified ITBS frequencies of 38% in men and 62% in women. 33 It is a common running injury, with an incidence of 22% of reported lateral knee pain in runners. Iliotibial band friction syndrome (ITBS/ITBFS) is a primary cause of lateral knee pain.Biomechanical risk factors include bony abnormalities (causing instability between the trochlea and patella), lower extremity functional malalignment, abnormal proximal and distal body mechanics (patellofemoral joint, hip/pelvis, foot/ankle), and muscle and soft tissue imbalances. 63 PFPS constitutes 25% of knee injuries in runners, and has an incidence rate of 22/1000 person-years 34 in Naval Academy cadets. 34,26,27 An analysis from the UK found that the annual prevalence in the general population was 22.7% and in military population was 13.5%. 57 PFPS is a common condition amongst physically active individuals and young adults/adolescents with variability in prevalence across genders (female > males), and type of physical activity. 20,26 There are multiple terminologies to characterize anterior knee pain: chondromalacia patella, patellofemoral arthralgia, patellar pain, patellar pain syndrome and patellofemoral pain. Patellofemoral pain syndrome (PFPS) is defined by peripatellar or retropatellar pain exacerbated by patellofemoral joint/knee extensor loading activities.1 Overall prevalence of overuse injuries varies amongst sporting activities. 1 Epidemiology including risk factors and primary preventionĪ significant number of knee injuries can be classified as overuse, comprising 42% of all running injuries. Anatomical and biomechanical variations, including increased quadriceps angle, valgus deviation of the knee, and pronated feet, affect the forces that are applied to the knee joint. Training errors include excessive intensity or rapid increase of workload. Most knee overuse injuries are of multifactorial etiology involving extrinsic factors (training errors) or intrinsic factors (anatomical and biomechanical variations). 1 Common knee overuse injuries in adults include patellofemoral pain syndrome, iliotibial band syndrome, and quadricep/patellar tendinopathy. Each of these repetitive forces is applied to muscles, tendons, cartilage, or bone with less intensity than the acute injury threshold. Self-myofascial release massage performance resistance training.Overuse injuries of the knee result from microtrauma associated with physical activity and exercise that exceeds the tissue tolerance of the affected structure. These results indicate that longer duration FR-protocol may acutely increase muscle thickness of the vastus lateralis muscle without negatively affect the TLL and PTT. In addition, there was an increase on rectus femoris PPT two minutes post FR3, with no differences between conditions. There was a greater increase on VL muscle thickness after FR3 when compared to CON and FR1. A similar total training load among experimental conditions was observed. MT, PPT, and performance on multiple sets of knee extension were compared after performing passive recovery (CON), one minute (FR1), or three minutes of FR (FR3). Nine resistance-trained men (age: 24.8 ± 5.2 years height: 177 ± 7 cm total body mass 77.7 ± 6.2 kg) participated the study. ![]() The aim of the present study was to examine the effect of one and three minutes of quadriceps FR on muscle thickness (vastus lateralis and rectus femoris ), pain threshold (VL and RF), and total load lifted (TLL) on multiple sets of knee extension. However, the acute effect of FR on muscle thickness (MT) and pressure pain threshold (PPT) after multiple sets of resistance exercise remains to be elucidated. Previous studies investigated the effects of foam rolling (FR) on measurements of strength and power.
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