title: Interrater and Intrarater Reliability of the Active Knee Extension (AKE) Test among Healthy Adults.
abstract: [Purpose] The purpose of this study was to determine the reliability of the active knee extension (AKE) test among healthy adults. [Subjects] Fourteen healthy participants (10 men and 4 women) volunteered and gave informed consent. [Methods] Two raters conducted AKE tests independently with the aid of a simple and inexpensive stabilizing apparatus. Each knee was measured twice, and the AKE test was repeated one week later. [Results] The interrater reliability intraclass correlation coefficients (ICC2,1) were 0.87 for the dominant knee and 0.81 for the nondominant knee. In addition, the intrarater (test-retest) reliability ICC3,1 values range between 0.78-0.97 and 0.75-0.84 for raters 1 and 2 respectively. The percentages of agreement within 10° for AKE measurements were 93% for the dominant knee and 79% for the nondominant knee. [Conclusion] The finding suggests the current AKE test showed excellent interrater and intrarater reliability for assessing hamstring flexibility in healthy adults.
authors.affiliation: Unit of Sports Medicine, Faculty of Medicine, University of Malaya.
authors.forename: Mohamad Shariff A
authors.initials: MS
authors.lastname: Hamid
authors.forename: Mohamed Razif Mohamed
authors.initials: MR
authors.lastname: Ali
authors.forename: Ashril
authors.initials: A
authors.lastname: Yusof
keywords: Flexibility; Hamstring; Range of movement