Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine最新文献

Objectives: To develop and evaluate the reliability and validity of a novel Wall Slide Test for monitoring pain and knee flexion in youth athletes with growth-related lower-limb pathologies.

Design: Reliability and prospective longitudinal cohort study.

Setting: A Category 1 English Premier League football academy.

Participants: Eighty-one male academy footballers aged 9-17 years with clinically diagnosed lower-limb pain conditions (including Osgood-Schlatter disease, patellofemoral joint pain, Sinding-Larsen-Johansson syndrome, and Sever's disease) and 45 asymptomatic controls.

Main outcome measures: Pain at onset of loaded knee flexion (0-10 numerical rating scale), knee flexion range (cm), and a composite Wall Slide Test score. Reliability was assessed using intraclass correlation coefficients (ICC), standard error of measurement (SEM), and minimum detectable change (MDC). Validity was evaluated using mixed-effects models and receiver operating characteristic (ROC) analysis.

Results: Within-day reliability was excellent (ICC = 0.96-0.97). MDC values indicated meaningful detectable change (pain 0.74 points; range 9.1 cm). The composite score demonstrated good to excellent discriminative ability between symptomatic and asymptomatic players (AUC = 0.81-0.94).

Conclusions: The Wall Slide Test is a simple, reliable, and valid field-based tool for monitoring pain and functional knee flexion in youth athletes, supporting clinical decision-making and longitudinal management.

Objectives: Isokinetic dynamometers are the gold standard for muscle strength assessment, yet no systematic review has compiled Biodex-specific reference values or practical tools for their use. We aim to provide an overview of available Biodex isokinetic dynamometer peak torque reference values in healthy populations, assess methodological quality and offer recommendations for clinical and research use.

Methods: MEDLINE/PUBMED, EMBASE, SCOPUS and WEB OF SCIENCE were systematically searched for studies establishing Biodex Dynamometer reference values. Data on study characteristics and protocols were extracted. Methodological quality was assessed with a 17-point checklist.

Results: Ten studies were included from 1044 records screened. Population and protocol differences made meta-analysis unfeasible. The most predominant protocol assessed knee strength at 60°/s with 4-10 repetitions. Two studies had low methodological quality, six moderate, and two high. Studies lost points due to insufficient reporting rather than flaws in procedures. We created decision trees to facilitate readers in selecting appropriate reference values.

Conclusions: Reporting quality of Biodex reference values studies needs improvement. By integrating methodological quality, population characteristics, and protocols in decision trees, this review provides practical guidance to select appropriate reference values and improve muscle strength assessments in clinical and research settings.

Objectives: To develop the Landing Error Scoring System-Modified (LESS-M) and assess its content and concurrent validity.

Design: Content and concurrent validity study.

Setting: Online expert survey and laboratory-based testing.

Participants: Five field experts and 29 healthy individuals.

Main outcome measures: Content Validity Index (CVI) and Spearman's rank correlation between LESS-M scores and standard 3D motion analysis.

Results: All experts endorsed the lateral single-leg jump-landing task and the modified assessment tool. The ave-CVI and I-CVI were 0.97 and 0.8-1.0, respectively. Moderate correlations were found between the LESS-M score and both knee valgus (ρ = 0.425; p = 0.001) and hip adduction moment (ρ = 0.446; p = 0.001) at peak vertical ground reaction force (vGRF).

Conclusions: The LESS-M demonstrated strong content validity based on expert consensus and showed moderate concurrent validity with 3D motion capture for assessing lateral single-leg jump landing. It may be a potential tool for identifying individuals at risk for non-contact ACL injury. Nonetheless, further investigation is required to determine an appropriate cutoff score and to assess the reliability of the LESS-M for broader application.