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

Objectives: To evaluate the diagnostic accuracy of infrared thermography (IT) using temperature difference (ΔT) and gray-level co-occurrence matrix (GLCM)-based textural parameters for detecting patellar tendinopathy (PT) in athletes, and to determine the optimal region of interest (ROI) size for analysis.

Design: Cross-sectional study following STARD criteria.

Setting: Physical therapy center with controlled environmental conditions.

Participants: 54 athletes (27 with unilateral PT; 27 healthy controls).

Main outcome measures: Temperature differences (ΔT) and GLCM features (energy, homogeneity, contrast, correlation, entropy) from thermal images of tendon and knee ROIs.

Results: Athletes with PT showed higher ΔT in the tendon ROI (0.5 ± 0.36 °C vs. 0.2 ± 0.20 °C; d = 0.77; p = 0.013). Among GLCM parameters, tendon ROI correlation (TCOR) differed significantly between groups (p = 0.042). Diagnostic performance analysis identified ΔT as the best single variable (AUC 0.83; sensitivity 78 %; specificity 78 %). The ΔT + GLCM combination achieved highest accuracy for tendon ROI (AUC 0.93). The patellar tendon-specific ROI provided better discrimination than the knee ROI.

Conclusions: IRT combined with GLCM enhances PT diagnostic precision, with the tendon ROI optimal for detecting local physiological differences. This accessible multimodal approach could complement clinical diagnosis in athletes.

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.