Upper Extremity and Lower Back Moments During Carrying Tasks in Farm Children

dc.contributor.author Gillette, Jason
dc.contributor.author Derrick, Timothy
dc.contributor.author Gillette, Jason
dc.contributor.author Stevermer, Catherine
dc.contributor.author Meardon, Stacey
dc.contributor.author Derrick, Timothy
dc.contributor.author Schwab, Charles
dc.contributor.author Schwab, Charles
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-02-13T03:58:46.000
dc.date.accessioned 2020-06-29T22:37:16Z
dc.date.available 2020-06-29T22:37:16Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2009
dc.date.embargo 2012-12-11
dc.date.issued 2009-05-01
dc.description.abstract <p>Farm youth commonly perform animal care tasks such as feeding and watering. The pur­pose of this study was to determine the effects of age, bucket size, loading symmetry, and amount of load on upper body moments during carrying tasks. Fifty-four male and female par­ticipants in four age groups (8–10 years, 12–14 years, 15–17 years, and adults, 20–26 years) participated in the study. Conditions included combinations of large or small bucket sizes, unilateral or bilateral loading, and load levels of 10% or 20% of body weight (BW). During bucket carrying, elbow flexion, shoulder flex­ion, shoulder abduction, shoulder external rotation, L5/S1 extension, L5/S1 lateral bend­ing, and L5/S1 axial rotation moments were estimated using video data. The 8–10 year-old group did not display higher proportional joint moments as compared with adults. Decreasing the load from 20% BW to 10% BW signifi­cantly decreased maximum normalized elbow flexion, shoulder flexion, shoulder abduction, shoulder external rotation, L5/S1 lateral bend­ing, and L5/S1 axial rotation moments. Carry­ing the load bilaterally instead of unilaterally also significantly reduced these six maximum normalized joint moments. In addition, modi­fying the carrying task by using smaller one-gallon buckets produced significant reductions in maximum L5/S1 lateral bending moments.</p>
dc.description.comments <p>This article is from <em><a href="http://journals.humankinetics.com/jab-back-issues/JABVolume25Issue2May/UpperExtremityandLowerBackMomentsDuringCarryingTasksinFarmChildren" target="_blank">Journal of Applied Biomechanics</a> </em>25, no. 2 (May 2009): 149–155.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/120/
dc.identifier.articleid 1120
dc.identifier.contextkey 3528030
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/120
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/853
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/120/Schwab_2009_UpperExtremityLower.pdf|||Fri Jan 14 19:10:04 UTC 2022
dc.subject.disciplines Agriculture
dc.subject.disciplines Biomechanics
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Kinesiology
dc.subject.keywords Biomechanics
dc.subject.keywords ergonomics
dc.subject.keywords injury
dc.subject.keywords inverse dynamics
dc.subject.keywords posture
dc.title Upper Extremity and Lower Back Moments During Carrying Tasks in Farm Children
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isAuthorOfPublication 6c34a3bd-cf2d-4b52-b44c-76560be15de4
relation.isAuthorOfPublication 5a354153-b128-45db-b138-1c3ff8682ed1
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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