Task demand and load carriage experience affect gait variability among military cadets

dc.contributor.authorUlman, Sophiaen
dc.contributor.authorSrinivasan, Divyaen
dc.contributor.authorNussbaum, Maury A.en
dc.date.accessioned2022-11-15T13:57:54Zen
dc.date.available2022-11-15T13:57:54Zen
dc.date.issued2022-11en
dc.date.updated2022-11-15T13:53:35Zen
dc.description.abstractLoad carriage is an inevitable daily task for soldiers. The purposes of this study were to explore the extent to which gait variability (GV) is affected by load carriage and experience among military cadets, and whether experience-related differences in GV are dependent on task demand. Two groups of cadets (30 experienced, 30 less experienced) completed a load carriage task in each of three load conditions (no load, 16 kg, 32 kg). Three categories of GV measures were obtained: spatiotemporal variability, joint kinematic variability, and Lyapunov exponents. Compared to traditional mean gait measures, GV measures were more discriminative of experience: although both groups showed similar mean gait measures, the experienced participants had reduced variability in spatiotemporal measures (p ≤ 0.008) and joint kinematics (p ≤ 0.004), as well as lower levels of long-term local dynamic stability at the ankle (p = 0.040). In both groups, heavier loads were also caused increased GV (p ≤ 0.018) and enhanced short-term local dynamic stability at the knee (p = 0.014). These results emphasize the importance of GV measures, which may provide a more complete description of adaptability, stability, and control; highlight alternate movement strategies during more difficult load carriage; and capture experience-related differences in load carriage strategies.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s41598-022-22881-yen
dc.identifier.eissn2045-2322en
dc.identifier.issn2045-2322en
dc.identifier.issue1en
dc.identifier.orcidNussbaum, Maury [0000-0002-1887-8431]en
dc.identifier.otherPMC9626617en
dc.identifier.other10.1038/s41598-022-22881-y (PII)en
dc.identifier.pmid36319838en
dc.identifier.urihttp://hdl.handle.net/10919/112634en
dc.identifier.volume12en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.relation.urihttps://www.ncbi.nlm.nih.gov/pubmed/36319838en
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectClinical Researchen
dc.subjectRehabilitationen
dc.subject.meshAnkle Jointen
dc.subject.meshHumansen
dc.subject.meshGaiten
dc.subject.meshWalkingen
dc.subject.meshWeight-Bearingen
dc.subject.meshMilitary Personnelen
dc.subject.meshBiomechanical Phenomenaen
dc.titleTask demand and load carriage experience affect gait variability among military cadetsen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherresearch-articleen
dc.type.otherJournal Articleen
dcterms.dateAccepted2022-10-20en
pubs.organisational-group/Virginia Techen
pubs.organisational-group/Virginia Tech/Engineeringen
pubs.organisational-group/Virginia Tech/Engineering/Industrial and Systems Engineeringen
pubs.organisational-group/Virginia Tech/Faculty of Health Sciencesen
pubs.organisational-group/Virginia Tech/All T&R Facultyen
pubs.organisational-group/Virginia Tech/Engineering/COE T&R Facultyen
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