{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,4]],"date-time":"2026-11-04T23:25:53Z","timestamp":1793834753487,"version":"4.6.1"},"reference-count":31,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2020,9,2]],"date-time":"2020-09-02T00:00:00Z","timestamp":1599004800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Previous research has demonstrated large amounts of inter-subject variability in downward (unweighting &amp; braking) phase strategies in the countermovement jump (CMJ). The purpose of this study was to characterize downward phase strategies and associated temporal, kinematic and kinetic CMJ variables. One hundred and seventy-eight NBA (National Basketball Association) players (23.6 \u00b1 3.7 years, 200.3 \u00b1 8.0 cm; 99.4 \u00b1 11.7 kg; CMJ height 68.7 \u00b1 7.4 cm) performed three maximal CMJs. Force plate and 3D motion capture data were integrated to obtain kinematic and kinetic outputs. Afterwards, athletes were split into clusters based on downward phase characteristics (k-means cluster analysis). Lower limb joint angular displacement (i.e., delta flexion) explained the highest portion of point variability (89.3%), and three clusters were recommended (Ball Hall Index). Delta flexion was significantly different between clusters and players were characterized as \u201cstiff flexors\u201d, \u201chyper flexors\u201d, or \u201chip flexors\u201d. There were no significant differences in jump height between clusters (p &gt; 0.05). Multiple regression analyses indicated that most of the jumping height variance was explained by the same four variables, (i.e., sum concentric relative force, knee extension velocity, knee extension acceleration, and height) regardless of the cluster (p &lt; 0.05). However, each cluster had its own unique set of secondary predictor variables.<\/jats:p>","DOI":"10.3390\/ijerph17176394","type":"journal-article","created":{"date-parts":[[2020,9,2]],"date-time":"2020-09-02T09:29:28Z","timestamp":1599038968000},"page":"6394","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Different Movement Strategies in the Countermovement Jump Amongst a Large Cohort of NBA Players"],"prefix":"10.3390","volume":"17","author":[{"given":"Jacob","family":"Rauch","sequence":"first","affiliation":[{"name":"Peak Performance Project, Santa Barbara, CA 93101, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric","family":"Leidersdorf","sequence":"additional","affiliation":[{"name":"Peak Performance Project, Santa Barbara, CA 93101, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trent","family":"Reeves","sequence":"additional","affiliation":[{"name":"Peak Performance Project, Santa Barbara, CA 93101, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leah","family":"Borkan","sequence":"additional","affiliation":[{"name":"Peak Performance Project, Santa Barbara, CA 93101, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcus","family":"Elliott","sequence":"additional","affiliation":[{"name":"Peak Performance Project, Santa Barbara, CA 93101, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8547-419X","authenticated-orcid":false,"given":"Carlos","family":"Ugrinowitsch","sequence":"additional","affiliation":[{"name":"Laboratory of Adaptations to Strength Training, Escola de Educa\u00e7\u00e3o F\u00edsica e Esporte, Universidade de Sao Paulo, S\u00e3o Paulo 05508-060, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1016\/j.jsams.2009.02.009","article-title":"Vertical jump in female and male basketball players-A review of observational and experimental studies","volume":"13","author":"Ziv","year":"2010","journal-title":"J. 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