{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T01:19:57Z","timestamp":1790644797437,"version":"4.1.0"},"reference-count":41,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2017,4,10]],"date-time":"2017-04-10T00:00:00Z","timestamp":1491782400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Scandinavian Med Sci Sports"],"published-print":{"date-parts":[[2018,1]]},"abstract":"<jats:p>The Nordic Hamstring Exercise (<jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content>) is effective for selective hamstring strengthening to improve muscle balance between knee flexors and extensors. The purpose of this study (within subject design of repeated measures) was to determine the effects of a standardized 4\u2010week <jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content> training on thigh strength and muscle balance with concomitant kinetic and kinematic monitoring. Sixteen male sprinters (22\u00a0years, 181\u00a0cm, 76\u00a0kg) performed a standardized 4\u2010week <jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content> training consisting of three sessions per week (each 3\u00d73 repetitions). Six rope\u2010assisted and six unassisted sessions were performed targeting at a constant knee extension angular velocity of ~15\u00b0\/s across a ~90\u2010100\u00b0 knee joint range of motion. Kinetic (peak and mean moment, impulse) and kinematic parameters (eg, <jats:styled-content style=\"fixed-case\">ROM<\/jats:styled-content> to downward acceleration, <jats:styled-content style=\"fixed-case\">ROM<jats:sub>DWA<\/jats:sub><\/jats:styled-content>) were recorded during selected sessions. Unilateral isokinetic tests of concentric and eccentric knee flexors and extensors quantified muscle group\u2010, contraction mode\u2010, and velocity\u2010specific training adaptations. Peak moments and contractional work demonstrated strong interactions of time with muscle group, contraction modes, and angular velocities (\u03b7\u00b2&gt;.150). <jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content> training increased eccentric hamstring strength by 6%\u201014% as well as thigh muscle balance with biggest adaptations at 150\u00b0\/s 2\u00a0weeks after <jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content> training. Throughout the training period significant increases (<jats:italic>P<\/jats:italic>&lt;.001) of peak (\u03b7\u00b2=.828) and mean moments (\u03b7\u00b2=.611) became apparent, whereas the impulse and the <jats:styled-content style=\"fixed-case\">ROM<jats:sub>DWA<\/jats:sub><\/jats:styled-content> of unassisted <jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content> repetitions remained unchanged (<jats:italic>P<\/jats:italic>&gt;.05). A 4\u2010week <jats:styled-content style=\"fixed-case\">NHE<\/jats:styled-content> training significantly strengthened the hamstrings and improved muscle balance between knee flexors and extensors. Despite the slow training velocity, biggest adaptations emerged at the highest velocity 2\u00a0weeks after training ended.<\/jats:p>","DOI":"10.1111\/sms.12868","type":"journal-article","created":{"date-parts":[[2017,3,1]],"date-time":"2017-03-01T07:12:43Z","timestamp":1488352363000},"page":"65-76","source":"Crossref","is-referenced-by-count":49,"title":["Velocity\u2010specific and time\u2010dependent adaptations following a standardized Nordic Hamstring Exercise training"],"prefix":"10.1111","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4451-9512","authenticated-orcid":false,"given":"T.","family":"Alt","sequence":"first","affiliation":[{"name":"Institute of Movement and Neuroscience German Sport University  Cologne North Rhine\u2010Westphalia Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Y. 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