Publications by authors named "Bruna C Luz"

Article Synopsis
  • The study aimed to compare the effects of a muscle strength and power training program versus muscle strength training alone in individuals with patellofemoral pain (PFP).
  • Thirty-seven participants were split into two groups: one doing strength and power training and the other focused solely on strength training, with outcomes measured at multiple intervals.
  • Ultimately, the findings showed no significant differences in pain intensity or physical functioning between the two groups, indicating that adding power exercises did not provide additional benefits over strength training alone.
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Background: Augmented feedback strategies have been demonstrated to enhance jump-related biomechanics. Nevertheless, its effect on classical ballet is still unknown. The purpose of this study was to investigate whether a multimodal augmented feedback session is effective for improving lower limb and trunk kinematics during a classical ballet single-leg jump.

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Context: Excessive dynamic lower limb misalignment may predispose ballet dancers to jump-related injuries. However, it is unknown whether proximal and distal factors influence this movement pattern. The aim of this study was to investigate whether hip abduction strength, foot alignment, and ankle dorsiflexion range of motion (ROM) are associated with peak angles of hip adduction and internal rotation and knee abduction during the preparation and landing phases of a classical ballet jump.

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Background: Altered kinematics have been frequently observed in runners with patellofemoral pain (PFP), and few studies have aimed to understand the influence of sex on kinematics of this population. The aim of this study was to investigate whether altered hip and knee kinematics in runners with PFP are sex specific.

Hypothesis: Kinematics will be different between female and male runners with and without PFP.

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Background: Strong evidence supports the proximal combined with quadriceps strengthening for patellofemoral pain (PFP) rehabilitation. However, most reported rehabilitation programs do not follow specific exercise prescription recommendations or do not provide adequate details for replication in clinical practice. Furthermore, people with PFP have power deficits in hip and knee muscles and it remains unknown whether the addition of power exercises would result in superior or more consistent outcomes.

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Background: Patellofemoral pain (PFP) is the most common running-related injury. Altered hip and knee kinematics and increases in weekly distance and running pace are often associated with PFP development and exacerbation.

Research Question: Are altered movements and training load characteristics (weekly distance and running pace) relate to pain intensity or physical function level in runners with PFP?

Methods: Forty recreational runners with PFP (20 males and 20 females) participated in this cross-sectional observational study.

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Article Synopsis
  • The study examined the effects of three gait retraining techniques—forefoot landing (FFOOT), 10% step rate increase (SR10%), and forward trunk lean (FTL)—on lower limb biomechanics and patellofemoral pain (PFP) in runners.
  • Participants included eighteen recreational PFP runners who were randomized into three groups, with various assessments conducted on pain and function before and after a two-week training period and at a six-month follow-up.
  • Results showed that all retraining techniques improved pain symptoms and functional scores significantly, but the biomechanics changes observed were not enough to fully explain the clinical improvements, suggesting other factors might be at play.
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Background: Patellofemoral pain (PFP) is the most common running overuse injury. Excessive rearfoot eversion is commonly considered as a PFP risk factor and the relationship between ankle-foot complex movement and lower limb may be involved with this dysfunction. The purpose of this study was to evaluate the correlation between rearfoot eversion with tibia and femur kinematics in frontal and transverse planes during running in individuals with and without PFP.

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