Polo-Ferrero Luis, Sánchez-Tocino María Luz, Dávila-Marcos Arturo, Carrera-Villegas Marta Beatriz, Sánchez-Sánchez María Carmen, Méndez-Sánchez Roberto
Department of Nursing and Physiotherapy, University of Salamanca, 37007 Salamanca, Spain.
Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain.
Diagnostics (Basel). 2025 Jun 10;15(12):1475. doi: 10.3390/diagnostics15121475.
: Lower-limb muscle function is traditionally assessed with tests like the five times sit-to-stand test (5STS) and the 30-s chair stand test (30CS). The ADR Encoder, a linear transducer, measures power and velocity during the sit-to-stand test. This study aimed to validate its use as functional indicators of muscle function in older adults. : A cross-sectional study with 114 participants (mean age: 72.92 ± 4.97 years) was conducted. The 5STS, 30CS, power, and speed were measured using the ADR Encoder. Participants were categorized into frail, pre-frail, and robust groups according to the FRAIL Scale. Criterion, intraobserver, and interobserver validity were assessed. : Strong correlations (r > 0.7; < 0.001) were found between power, speed, and both 5STS and 30CS. The interobserver intraclass correlation coefficient (ICC) for speed was 0.90 and the intraobserver ICC was 0.85. For power, the interobserver ICC was 0.88 and the intraobserver ICC was 0.79, all statistically significant ( < 0.001). Significant differences in power (7.78 W vs. 11.26 W; < 0.001) and speed (0.40 m/s vs. 0.58 m/s; < 0.001) were observed between frail and non-frail participants. : The ADR Encoder is a valid, reliable tool for measuring power and speed in older adults. Its strong correlations with the 5STS and 30CS demonstrate its clinical relevance, with high reproducibility across observers and time points. Its application in diverse clinical and community settings could broaden its utility in geriatric functional assessment.
传统上，下肢肌肉功能通过五次坐立试验（5STS）和30秒椅子站立试验（30CS）等测试进行评估。ADR编码器是一种线性换能器，可在坐立试验期间测量功率和速度。本研究旨在验证其作为老年人肌肉功能功能指标的用途。：进行了一项横断面研究，有114名参与者（平均年龄：72.92±4.97岁）。使用ADR编码器测量5STS、30CS、功率和速度。根据衰弱量表将参与者分为衰弱、衰弱前期和强壮组。评估了标准效度、观察者内效度和观察者间效度。：发现功率、速度与5STS和30CS之间存在强相关性（r>0.7；P<0.001）。速度的观察者间组内相关系数（ICC）为0.90，观察者内ICC为0.85。对于功率，观察者间ICC为0.88，观察者内ICC为0.79，均具有统计学意义（P<0.001）。在衰弱和非衰弱参与者之间观察到功率（7.78 W对11.26 W；P<0.001）和速度（0.40 m/s对0.58 m/s；P<0.001）的显著差异。：ADR编码器是一种用于测量老年人功率和速度的有效、可靠工具。它与5STS和30CS的强相关性证明了其临床相关性，在观察者和时间点之间具有高再现性。其在不同临床和社区环境中的应用可能会扩大其在老年功能评估中的效用。
