Sara Regina Piva

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STUDY DESIGN Cohort study of patients with low back pain (LBP) receiving physical therapy. OBJECTIVE To examine the responsiveness characteristics of the numerical pain rating scale (NPRS) in patients with LBP using a variety of methods. SUMMARY OF BACKGROUND DATA Although several studies have assessed the reliability and validity of the NPRS, few(More)
STUDY DESIGN Case control design. OBJECTIVES To investigate whether differences exist in lower extremity muscle strength and soft tissue length between patients with patellofemoral pain syndrome (PFPS) and age- and gender-matched control subjects. BACKGROUND Based on our clinical experience and emerging data, impairments such as muscular weakness(More)
STUDY DESIGN Randomized clinical trial, single-masked. OBJECTIVES To determine the effectiveness of using a modified neuromuscular electrical stimulation (NMES) training program as an adjunct treatment for improving quadriceps strength and physical function in rehabilitation following anterior cruciate ligament reconstruction (ACLR). BACKGROUND NMES(More)
Forty-nine patients with low-back pain referred for flexion-extension radiographs due to suspicion of lumbar instability were studied to examine the relationship between the clinical presentation and the presence of radiographic instability of the lumbar spine. Patients had a mean age of 39.2 (±11.3) years, with a mean Oswestry score of 20.4% (±13.3). The(More)
Measurements of active range of motion (AROM) and passive intervertebral movements (PIM) of the cervical spine are frequently used for patients with neck pain. However, there is a paucity of studies that investigate the psychometric properties of these measurements. Objectives of this study were to: (1) determine the inter-tester reliability of PIM, AROM,(More)
OBJECTIVE To report the prevalence and relationship of self-reported knee instability to physical function in a sample of subjects with knee osteoarthritis (OA), and to discuss the implications of these observations for rehabilitation. METHODS Subjects were 105 individuals (80 females) with knee OA who rated their knee instability severity on a 6-point(More)
OBJECTIVE To determine if quadriceps activation failure (QAF) moderates the relationship between quadriceps strength and physical function in individuals with knee osteoarthritis (OA). METHODS Quadriceps strength and QAF were measured in 105 subjects (80 females) with radiographically confirmed knee OA using a burst-superimposition maximum voluntary(More)
BACKGROUND Impairment-based exercise programs have yielded only small to moderate benefits in reducing pain and improving function in people with knee osteoarthritis (OA). It has previously been proposed that adding agility and perturbation training to exercise programs for people with knee OA may improve treatment effects for pain and function. OBJECTIVE(More)
BACKGROUND The Figure-of-8 Walk Test (F8W) involves straight and curved paths and was designed to represent walking skill in everyday life. OBJECTIVE The purposes of this study were to validate the measure in older adults with walking difficulties and to explore correlates of the curved-path walking measure not represented by a straight-path walking(More)
OBJECTIVES To explore whether the psychologic variables anxiety, depression, and fear-avoidance beliefs, and interactions between these variables, are associated with physical function in patients with knee osteoarthritis (OA). We hypothesized lower levels of function would be related to higher anxiety, higher depression, and higher fear-avoidance beliefs,(More)