Kinematic and kinetic reliability of two jumping and landing physical performance tasks in young adult women

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dc.contributor.authorOrtiz, Alexis
dc.contributor.authorOlson, Sharon
dc.contributor.authorLibby, Charles
dc.contributor.authorKwon, Young-Hoo
dc.contributor.authorTrudelle-Jackson, Elaine
dc.creator.orcidhttps://orcid.org/0000-0002-5638-6542
dc.date.accessioned2022-03-18T23:40:23Z
dc.date.available2022-03-18T23:40:23Z
dc.date.issued2007-05
dc.description.abstractBACKGROUND: Jumping and landing tasks are commonly used functional measurement tools to assess lower extremity performance in female athletes. However, few studies have established the number of trials needed to achieve reliability of measurement for evaluating landing mechanics. OBJECTIVE: To determine the reliability of peak hip and knee joint angles and peak ground reaction forces during two anterior-posterior unilateral functional tasks performed by young women. METHODS: Sixteen young women (28.5 ± 4.2 years;162.2 ± 4.8 cm; 59.5 ± 8.1 kg) participated in this investigation. Each participant performed five trials of a 40-cm single leg drop jump and two trials of a ten-repetition, 20-cm, single leg up-down hop task during the same session. Peak hip and knee joint angles, peak vertical ground reaction forces, and ground contact time were measured. Intraclass correlation coefficients (ICC), standard errors of measurement, and 95% confidence intervals were calculated for all variables measured during multiple trials for both tasks. RESULTS: The five-trial mean ICC values of the drop jump were ≥ 0.75 for all variables. The single and two to four-trial average ICC values yielded good reliability for only some variables. Single-trial and two-trial mean ICC values for the up down test were ≥ .77. DISCUSSION AND CONCLUSION: The use of five-trial averages for the 40-cm drop jump and a single trial for the 20-cm, up-down hop task showed that for these functional tasks performed by young adult women, reliable measurement of lower extremity landing mechanics can be achieved.en_US
dc.identifier.citationThis is a published version of an article that is available at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953289/pdf/najspt-02-104.pdf. Recommended citation: Ortiz, A., Olson, S., Libby, C. L., Kwon, Y. H., & Trudelle-Jackson, E. (2007). Kinematic and kinetic reliability of two jumping and landing physical performance tasks in young adult women. North American Journal of Sports Physical Therapy, 2(2), 104–112. This item has been deposited in accordance with publisher copyright and licensing terms and with the author’s permission.en_US
dc.identifier.urihttps://hdl.handle.net/11274/13538
dc.identifier.urihttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953289/pdf/najspt-02-104.pdf
dc.language.isoen_USen_US
dc.publisherNorth American Sports Medicine Instituteen_US
dc.rights.licenseCC BY-NC
dc.subjectReliabilityen_US
dc.subjectKinematicsen_US
dc.subjectLandingen_US
dc.subjectKineticsen_US
dc.subjectHop testen_US
dc.titleKinematic and kinetic reliability of two jumping and landing physical performance tasks in young adult womenen_US
dc.typeArticleen_US

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