The association between lower extremity strength ratios and the history of injury in collegiate athletes.

Context: Strength ratios are important because imbalances in opposing muscle groups can cause articular instability and subsequently increase the risk of musculoskeletal injury (MSKI). Therefore, the purpose of this study was to evaluate the association between lower extremity (LE) musculoskeletal isometric strength ratios and the history of LE MSKI.

Participants: One hundred eighty-two NCAA Division 1 soccer, football, volleyball, and basketball athletes.

Measurement properties of Patient-Reported Outcome Measures used to assess the sleep quality in adults with high prevalence chronic pain conditions: a systematic review.

Objectives: To provide a comprehensive overview of the measurement properties of patient-reported outcome measures (PROMs) used to assess sleep quality in adult patients with prevalent pain-related conditions.

Methods: Without language restrictions PubMed, Scopus, and Embase were searched from their inception to January 2020. Independent reviewers screened and selected studies, extracted data, assessed the methodological quality using the Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN) Risk of Bias checklist, and performed an evidence synthesis for each measurement property.