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Ultrasound (US) measures are used by clinicians and researchers to evaluate improvements in activity of the abdominal muscles in patients with low back pain. Studies evaluating the reproducibility of(More)
STUDY DESIGN Translation, cross-cultural adaptation, and psychometric testing of 2 questionnaires. OBJECTIVE The objectives of this study were to translate and cross-culturally adapt the(More)
The primary objective of this study was to determine which questionnaire, the Roland Morris disability questionnaire (RMDQ) or the patient-specific functional scale (PSFS), was better at detecting(More)