{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T17:11:05Z","timestamp":1790010665610,"version":"4.0.1"},"reference-count":41,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T00:00:00Z","timestamp":1789689600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004329","name":"Slovenian Research Agency","doi-asserted-by":"publisher","award":["P5-0443"],"award-info":[{"award-number":["P5-0443"]}],"id":[{"id":"10.13039\/501100004329","id-type":"DOI","asserted-by":"publisher"}]},{"award":["P5-0443"],"award-info":[{"award-number":["P5-0443"]}],"id":[{"id":"https:\/\/ror.org\/059bp8k51","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Funct. Morphol. Kinesiol.","JFMK"],"abstract":"<jats:p>Background and Objectives: Acute responses to exercise interventions may vary within individuals across repeated exposures, potentially limiting the interpretation of individuals as \u201cresponders\u201d or \u201cnon-responders\u201d. This study investigated whether acute changes in range of motion following short-term static stretching are reproducible within individuals. Methods: Twenty-six healthy young adults completed two identical sessions separated by one week. Flexibility was assessed before and after static stretching using the Sit-and-Reach Test (SRT) and ankle dorsiflexion range of motion (ADF ROM). The intervention consisted of three 30 s static stretches for the hamstrings and gastrocnemius. Results: Baseline measurements showed excellent reproducibility (SRT: ICC = 0.98; ADF ROM: ICC = 0.95). SRT performance and ADF ROM increased significantly after stretching (p &lt; 0.001), with no evidence of a systematic difference in the mean response between visits (time \u00d7 visit interactions: p &gt; 0.05). Reproducibility of individual pre-to-post change scores was moderate by point estimate but imprecisely estimated (SRT: ICC = 0.74; 95% CI: 0.50\u20130.88; ADF ROM: ICC = 0.57; 95% CI: 0.25\u20130.78). Conclusions: Individual change scores showed limited reproducibility. The design cannot separate measurement error, normal day-to-day variation, and variability specifically attributable to the stretching response. Classifying individuals as \u201cresponders\u201d or \u201cnon-responders\u201d based on a single acute stretching session should therefore be approached with caution.<\/jats:p>","DOI":"10.3390\/jfmk11030373","type":"journal-article","created":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T16:06:51Z","timestamp":1790006811000},"page":"373","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Reproducibility of Acute Changes in Range of Motion Following Short-Term Static Stretching of the Hamstrings and Gastrocnemius"],"prefix":"10.3390","volume":"11","author":[{"given":"Ur\u0161ula","family":"Prelesnik","sequence":"first","affiliation":[{"name":"Faculty of Health Sciences, University of Primorska, SI-6310 Izola, Slovenia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3555-8680","authenticated-orcid":false,"given":"\u017diga","family":"Kozinc","sequence":"additional","affiliation":[{"name":"Faculty of Health Sciences, University of Primorska, SI-6310 Izola, Slovenia"},{"name":"Ludwig Boltzmann Institute for Rehabilitation Research, A-1140 Vienna, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,9,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bonafiglia, J.T., Preobrazenski, N., and Gurd, B.J. 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