Inter-rater and Intra-rater reliability between experience and non-experienced examiners on 90-90 active knee extension test using Goniometer among healthy college students

Purpose: Intra-rater reliability refers to the consistency of measurements demonstrated in similar assessment situation at two different times by the same examiner which also refers to test-retest. Interrater reliability test denotes the consistency of assessments performed by two different examiners. The objective of the study was to determine the inter-rater and intra-rater reliability between experienced and non-experienced physiotherapist on 90-90 active knee extension test using goniometer among healthy college students. Methodology: This study method is a reliability design in determining hamstring flexibility among 42 young healthy college students of School of Physiotherapy, KPJ Healthcare University College, Nilai, Malaysia. The 90-90 active knee extension was performed using goniometry. Four physiotherapists involved in the study consist of two non-experienced physiotherapist and two experienced physiotherapists. Results: The mean and standard deviation of active knee extension 90-90 Active Knee extension test among two experienced physiotherapist were 19.83(SD= 10.21) and 43.14 (SD= 47.05). Mean and standard deviation for two non-experienced physiotherapist value were 21.21(SD 11.14) and 42.55 (47.66). Conclusion: The conclusion of the inter-rater and intrarater evaluation between experienced and nonexperienced physiotherapist showed that goniometer is a reliable tool to evaluate hamstring flexibility among healthy college students.