title: Agreement Between Face-to-Face and Free Software Video Analysis for Assessing Hamstring Flexibility in Adolescents.
abstract: The objective of this study was to determine the level of agreement between face-to-face hamstring flexibility measurements and free software video analysis in adolescents. Reduced hamstring flexibility is common in adolescents (75% of boys and 35% of girls aged 10). The length of the hamstring muscle has an important role in both the effectiveness and the efficiency of basic human movements, and reduced hamstring flexibility is related to various musculoskeletal conditions. There are various approaches to measuring hamstring flexibility with high reliability; the most commonly used approaches in the scientific literature are the sit-and-reach test, hip joint angle (HJA), and active knee extension. The assessment of hamstring flexibility using video analysis could help with adolescent flexibility follow-up. Fifty-four adolescents from a local school participated in a descriptive study of repeated measures using a crossover design. Active knee extension and HJA were measured with an inclinometer and were simultaneously recorded with a video camera. Each video was downloaded to a computer and subsequently analyzed using Kinovea 0.8.15, a free software application for movement analysis. All outcome measures showed reliability estimates with α > 0.90. The lowest reliability was obtained for HJA (α = 0.91). The preliminary findings support the use of a free software tool for assessing hamstring flexibility, offering health professionals a useful tool for adolescent flexibility follow-up.
authors: Departments of 1Library Science; and 2Physical Therapy, University of Granada, Granada, Spain; 3Department of Physical Therapy, University of Granada, Granada, Spain; 4Department of Computer Science, University of Cádiz, Cádiz, Spain; and 5Department of Computer Science and Artificial Intelligence, CITIC-UGR (Research Center on Information and Communications Technology), University of Granada, Granada, Spain.
authors: José A
authors: JA
authors: Moral-Muñoz
authors: Bernabé
authors: B
authors: Esteban-Moreno
authors: Manuel
authors: M
authors: Arroyo-Morales
authors: Manuel J
authors: MJ
authors: Cobo
authors: Enrique
authors: E
authors: Herrera-Viedma
mesh_terms: D000293:Adolescent; D002648:Child; D018592:Cross-Over Studies; D005260:Female; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D015203:Reproducibility of Results; D012984:Software; D013848:Thigh; D014741:Video Recording