{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,12]],"date-time":"2026-01-12T09:00:51Z","timestamp":1768208451499,"version":"3.49.0"},"reference-count":0,"publisher":"Human Kinetics","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,3]]},"abstract":"<jats:sec sec-type=\"context\"><jats:title>Context:<\/jats:title><jats:p>The role of the rotator cuff is to provide dynamic stability to the glenohumeral joint. Human and animal studies have identified sarcomerogenesis as an outcome of eccentric training indicated by more torque generation with the muscle in a lengthened position.<\/jats:p><\/jats:sec><jats:sec sec-type=\"objective\"><jats:title>Objective:<\/jats:title><jats:p>The authors hypothesized that a home-based eccentric-exercise program could increase the shoulder external rotators\u2019 eccentric strength at terminal internal rotation (IR).<\/jats:p><\/jats:sec><jats:sec sec-type=\"design\"><jats:title>Design:<\/jats:title><jats:p>Prospective case series.<\/jats:p><\/jats:sec><jats:sec sec-type=\"setting\"><jats:title>Setting:<\/jats:title><jats:p>Clinical laboratory and home exercising.<\/jats:p><\/jats:sec><jats:sec sec-type=\"participants\"><jats:title>Participants:<\/jats:title><jats:p>10 healthy subjects (age 30 \u00b1 10 y).<\/jats:p><\/jats:sec><jats:sec sec-type=\"intervention\"><jats:title>Intervention:<\/jats:title><jats:p>All participants performed 2 eccentric exercises targeting the posterior shoulder for 6 wk using a home-based intervention program using side-lying external rotation (ER) and horizontal abduction.<\/jats:p><\/jats:sec><jats:sec sec-type=\"main outcome measures\"><jats:title>Main Outcome Measures:<\/jats:title><jats:p>Dynamic eccentric shoulder strength measured at 60\u00b0\/s through a 100\u00b0 arc divided into 4 equal 25\u00b0 arcs (ER 50\u201325\u00b0, ER 25\u20130\u00b0, IR 0\u201325\u00b0, IR 25\u201350\u00b0) to measure angular impulse to represent the work performed. In addition, isometric shoulder ER was measured at 5 points throughout the arc of motion (45\u00b0 IR, 30\u00b0 IR, 15\u00b0 IR, 0\u00b0, and 15\u00b0 ER). Comparison of isometric and dynamic strength from pre- to posttesting was evaluated with a repeated-measure ANOVA using time and arc or positions as within factors.<\/jats:p><\/jats:sec><jats:sec sec-type=\"results\"><jats:title>Results:<\/jats:title><jats:p>The isometric force measures revealed no significant differences between the 5 positions (<jats:italic>P<\/jats:italic> = .56). Analysis of the dynamic eccentric data revealed a significant difference between arcs (<jats:italic>P<\/jats:italic> = .02). The percentage-change score of the arc of IR 25\u201350\u00b0 was found to be significantly greater than that of the arc of IR 0\u201325\u00b0 (<jats:italic>P<\/jats:italic> = .007).<\/jats:p><\/jats:sec><jats:sec sec-type=\"conclusion\"><jats:title>Conclusion:<\/jats:title><jats:p>After eccentric training the only arc of motion that had a positive improvement in the capacity to absorb eccentric loads was the arc of motion that represented eccentric contractions at the longest muscle length.<\/jats:p><\/jats:sec>","DOI":"10.1123\/jsr.2017-0020","type":"journal-article","created":{"date-parts":[[2017,4,17]],"date-time":"2017-04-17T13:51:50Z","timestamp":1492437110000},"page":"141-150","source":"Crossref","is-referenced-by-count":7,"title":["Effectiveness of a Home-Based Eccentric-Exercise Program on the Torque-Angle Relationship of the Shoulder External Rotators: A Pilot Study"],"prefix":"10.1123","volume":"26","author":[{"given":"Timothy L.","family":"Uhl","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Rice","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brianna","family":"Papotto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Timothy A.","family":"Butterfield","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"100","container-title":["Journal of Sport Rehabilitation"],"original-title":[],"link":[{"URL":"https:\/\/journals.humankinetics.com\/view\/journals\/jsr\/26\/2\/article-p141.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.humankinetics.com\/downloadpdf\/journals\/jsr\/26\/2\/article-p141.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,5,19]],"date-time":"2022-05-19T23:02:26Z","timestamp":1653001346000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.humankinetics.com\/view\/journals\/jsr\/26\/2\/article-p141.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,3]]},"references-count":0,"journal-issue":{"issue":"2"},"URL":"https:\/\/doi.org\/10.1123\/jsr.2017-0020","relation":{},"ISSN":["1056-6716","1543-3072"],"issn-type":[{"value":"1056-6716","type":"print"},{"value":"1543-3072","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,3]]}}}