{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T21:49:36Z","timestamp":1792532976795,"version":"4.5.0"},"reference-count":32,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,9,17]],"date-time":"2023-09-17T00:00:00Z","timestamp":1694908800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JFMK"],"abstract":"<jats:p>The purpose of this investigation was to examine changes in countermovement vertical jump performance after a single sport-specific training session in a sample of collegiate female volleyball athletes. Eleven NCAA Division I volleyball athletes performed countermovement vertical jumps with and without an arm swing prior to and immediately after a sport-specific training session. Each participant completed two jumps in each condition using a portable force platform. Paired samples t-tests were performed within each jump condition. When using an arm swing, mean braking force was the only variable to display a statistically significant change (p &lt; 0.05). In the no-arm-swing condition, mean propulsive force, propulsive net impulse, jump height and reactive strength index modified all statistically increased (p &lt; 0.05). Time to takeoff was statistically reduced (p &lt; 0.05). Additionally, a single-subject analysis was performed across all eleven participants resulting in general trends seen in the no-arm-swing condition, whereas the arm-swing condition displayed inconsistent findings across participants.<\/jats:p>","DOI":"10.3390\/jfmk8030137","type":"journal-article","created":{"date-parts":[[2023,9,17]],"date-time":"2023-09-17T06:12:21Z","timestamp":1694931141000},"page":"137","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Examination of Countermovement Jump Performance Changes in Collegiate Female Volleyball in Fatigued Conditions"],"prefix":"10.3390","volume":"8","author":[{"given":"Paul T.","family":"Donahue","sequence":"first","affiliation":[{"name":"School of Kinesiology and Nutrition, University of Southern Mississippi, Hattiesburg, MS 39406, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayden K.","family":"McInnis","sequence":"additional","affiliation":[{"name":"School of Kinesiology and Nutrition, University of Southern Mississippi, Hattiesburg, MS 39406, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madelyn K.","family":"Williams","sequence":"additional","affiliation":[{"name":"School of Kinesiology and Nutrition, University of Southern Mississippi, Hattiesburg, MS 39406, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Josey","family":"White","sequence":"additional","affiliation":[{"name":"School of Kinesiology and Nutrition, University of Southern Mississippi, Hattiesburg, MS 39406, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"43","DOI":"10.7575\/aiac.ijkss.v.9n.4p.43","article-title":"Association Between Body Composition and Vertical Jump Performance in Female Collegiate Volleyball Athletes","volume":"9","author":"Legg","year":"2021","journal-title":"Int. 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