{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T20:49:00Z","timestamp":1777668540583,"version":"3.51.4"},"reference-count":35,"publisher":"SAGE Publications","issue":"6","license":[{"start":{"date-parts":[[2013,3,28]],"date-time":"2013-03-28T00:00:00Z","timestamp":1364428800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Hum Factors"],"published-print":{"date-parts":[[2013,12]]},"abstract":"<jats:sec>\n                    <jats:title>Objective:<\/jats:title>\n                    <jats:p>The aim of this study was to evaluate the efficacy of a 9-day accommodation protocol on reducing perceived discomfort while sitting on a stability ball (SB); trunk muscle activity levels and lumbar spinal postures were also considered.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Previous studies have compared SB sitting with office chair sitting with few observed differences in muscle activity or posture; however, greater discomfort during SB sitting has been reported. These findings may indicate an accommodation period is necessary to acclimate to SB sitting.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method:<\/jats:title>\n                    <jats:p>For this study, 6 males and 6 females completed two separate, 2-hr sitting sessions on an SB. Half the participants completed a 9-day accommodation period between the visits, whereas the other half did not use an SB during the time. On both occasions, self-reported perceived discomfort ratings were collected along with erector spinae and abdominal muscle activity and lumbar spinal postures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Discomfort ratings were reduced in female participants following the accommodation; no effects on muscle activation or lumbar spine postures were observed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Accommodation training may reduce perceived low-back discomfort in females. Trunk muscle activity and lumbar spine postures during seated office work on an SB did not differ between groups; however, greater sample power was required to conclusively address these variables.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Application:<\/jats:title>\n                    <jats:p>Regarding whether to use an SB in place of a standard office chair, this study indicates that females electing to use an SB can decrease discomfort by following an accommodation protocol; no evidence was found to indicate that SB chair use will improve trunk strength or posture, even following an accommodation period.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/0018720813482326","type":"journal-article","created":{"date-parts":[[2013,3,28]],"date-time":"2013-03-28T23:28:26Z","timestamp":1364513306000},"page":"1064-1076","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":20,"title":["Should We Be More on the Ball?"],"prefix":"10.1177","volume":"55","author":[{"given":"Jennie A.","family":"Jackson","sequence":"first","affiliation":[{"name":"University of G\u00e4vle, G\u00e4vle, Sweden"},{"name":"Uppsala University, Uppsala, Sweden"}]},{"given":"Priyanka","family":"Banerjee-Gu\u00e9nette","sequence":"additional","affiliation":[{"name":"University of Waterloo, Waterloo, Canada"}]},{"given":"Diane E.","family":"Gregory","sequence":"additional","affiliation":[{"name":"Wilfrid Laurier University, Waterloo, Canada"}]},{"given":"Jack P.","family":"Callaghan","sequence":"additional","affiliation":[{"name":"University of Waterloo, Waterloo, Canada"}]}],"member":"179","published-online":{"date-parts":[[2013,3,28]]},"reference":[{"key":"bibr1-0018720813482326","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-198507000-00006"},{"key":"bibr2-0018720813482326","doi-asserted-by":"publisher","DOI":"10.1016\/0268-0033(94)90052-3"},{"key":"bibr3-0018720813482326","doi-asserted-by":"publisher","DOI":"10.1097\/BRS.0b013e318067dccb"},{"key":"bibr4-0018720813482326","unstructured":"Ball Chair Headquarters. 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