Gerrit Schwiertz1, Dennis Brueckner1, Rainer Beurskens2, Thomas Muehlbauer3. 1. Division of Movement and Training Sciences/Biomechanics of Sport, University of Duisburg-Essen, Essen, Germany. 2. Department of Health and Social Affairs, FHM Bielefeld - University of Applied Sciences, Bielefeld, Germany. 3. Division of Movement and Training Sciences/Biomechanics of Sport, University of Duisburg-Essen, Essen, Germany. Electronic address: thomas.muehlbauer@uni-due.de.
Abstract
BACKGROUND: The Lower Quarter Y Balance Test (YBT-LQ) has been widely used to register dynamic balance performance in children and adolescents. However, studies evaluating age- and sex-specific normative data to assess and classify YBT-LQ performance for these age-cohorts are missing. OBJECTIVE: Thus, we investigated YBT-LQ performance in healthy youth to provide age- and sex-specific reference values. METHODS: Six-hundred and sixty-nine individuals (286 female, 383 male) aged 10-17 years performed the YBT-LQ with their left and right leg. Normalized maximal reach distances (% leg length) for all three directions (i.e., anterior, posterolateral, posteromedial) and the composite score were calculated. Further, age- and sex-specific percentile values (i.e., 10th to 90th percentile) were computed and plotted. RESULTS: In boys, the oldest age group (16-17 years) performed better than the younger ones (14-15, 12-13, and 10-11 years). In girls, the youngest age group (10-11 years) often achieved better values compared to the 12-13-year olds. Further, 16-17-year old boys compared to the same aged girls showed better YBT-LQ performance in all but one measure (except left leg reach in posterolateral direction). For both sexes, curvilinear shaped curves were detected for percentile values across the reach directions. CONCLUSIONS: The generated age- and sex-specific reference values for the YBT-LQ can be used by practitioners to evaluate dynamic balance performance in healthy youth aged 10-17 years.
BACKGROUND: The Lower Quarter Y Balance Test (YBT-LQ) has been widely used to register dynamic balance performance in children and adolescents. However, studies evaluating age- and sex-specific normative data to assess and classify YBT-LQ performance for these age-cohorts are missing. OBJECTIVE: Thus, we investigated YBT-LQ performance in healthy youth to provide age- and sex-specific reference values. METHODS: Six-hundred and sixty-nine individuals (286 female, 383 male) aged 10-17 years performed the YBT-LQ with their left and right leg. Normalized maximal reach distances (% leg length) for all three directions (i.e., anterior, posterolateral, posteromedial) and the composite score were calculated. Further, age- and sex-specific percentile values (i.e., 10th to 90th percentile) were computed and plotted. RESULTS: In boys, the oldest age group (16-17 years) performed better than the younger ones (14-15, 12-13, and 10-11 years). In girls, the youngest age group (10-11 years) often achieved better values compared to the 12-13-year olds. Further, 16-17-year old boys compared to the same aged girls showed better YBT-LQ performance in all but one measure (except left leg reach in posterolateral direction). For both sexes, curvilinear shaped curves were detected for percentile values across the reach directions. CONCLUSIONS: The generated age- and sex-specific reference values for the YBT-LQ can be used by practitioners to evaluate dynamic balance performance in healthy youth aged 10-17 years.
Authors: Damiano Formenti; Alessio Rossi; Tindaro Bongiovanni; Francesco Campa; Luca Cavaggioni; Giampietro Alberti; Stefano Longo; Athos Trecroci Journal: Int J Environ Res Public Health Date: 2021-02-18 Impact factor: 3.390
Authors: Bartosz Zając; Anna Mika; Paulina Katarzyna Gaj; Tadeusz Ambroży Journal: Int J Environ Res Public Health Date: 2022-09-24 Impact factor: 4.614