ArticleInternational journal of sports physical therapy2020
THE RELIABILITY AND MINIMAL DETECTABLE CHANGE OF THE ELY AND ACTIVE KNEE EXTENSION TESTS.
Article in International journal of sports physical therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 10 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
10 citing papers in PubMed, 28 citations in OpenAlex.
- The Clinical Benefits of a Dynamic vs. Static Component as Part of a Comprehensive Warm-Up for Recreational Sports Players with Clinical Histories of Hamstring Injuries: A Randomized Clinical Trial.International journal of environmental research and public health · 2022Trial
- Reliability and Validity of AI-Based Pose Estimation Algorithms for Assessing Lower-Limb Flexibility and Joint Range of Motion.Sensors (Basel, Switzerland) · 2026Article
- Impact of Hamstring Tightness on Muscle Activation in Healthy Young Adults.Journal of functional morphology and kinesiology · 2025Article
- Exploring Methodological Decisions for Calculating the Minimally Detectable Change in Dysarthria: Reliability, Statistics, and Standard Error of Measurement.Journal of speech, language, and hearing research : JSLHR · 2025Article
- Investigating the validity and reliability of the functional movement screening tool in tennis.BMC sports science, medicine & rehabilitation · 2025Article
- Article
- Association of patellofemoral pain syndrome (PFPS) with quadratus lumborum and lower limb muscle tightness a cross-sectional study.Journal of orthopaedics · 2023Article
- Examination of the correlation between the knee extension angles in the sitting and supine positions measured using ImageJ software: a prospective cross-sectional study.Journal of physical therapy science · 2023Article
- The Falcon Test: An Observer Agreement Study in Subjects With and Without Anterior Knee Pain.International journal of sports physical therapy · 2023Article
- Sex Differences in Pre-Season Anthropometric, Balance and Range-of-Motion Characteristics in Elite Youth Soccer Players.Healthcare (Basel, Switzerland) · 2022Article
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMuscle length is a common component of the physical therapy examination, which may include the prone knee flexion (Ely) and active knee extension (AKE) tests. Clinicians using these tests should understand the clinimetric properties. PURPOSE: To investigate the reliability and minimal detectable change (MDC STUDY
designReliability analysis.
methodsSeventy-one asymptomatic adults (mean age 24.6 + /- 2.8 years) were recruited based on a convenience sample. Two examiners each performed the Ely and AKE test one time each in an intrasession design for the interrater reliability component, with one examiner repeating the tests one time 48 hours later to determine the intra-rater reliability. Results were recorded based on one trial per test and utilized a pelvic strap for the Ely test and an adjustable bolster for the AKE test. A separate researcher recorded measurements and results were blinded from the examiners.
resultsThe Ely test had excellent intra-rater and inter-rater reliability with an intraclass correlation coefficient (ICC) (3,1) of 0.900 and ICC (2,1) of 0.914 respectively. The intra-rater and inter-rater reliability of the AKE test was good with ICC (3,1) of 0.882 and ICC (2,1) 0.886 respectively. The MDC
conclusionThe Ely and AKE tests have good to excellent inter-rater and intra-rater reliability for measuring rectus femoris and hamstring muscle length when stabilization of the pelvis and hip is accounted for. The MDC should be considered as a threshold for true change in the asymptomatic adult population. LEVELS OF EVIDENCE: 2b.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.