{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T04:59:37Z","timestamp":1785387577070,"version":"3.55.0"},"reference-count":47,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T00:00:00Z","timestamp":1785369600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Psychol."],"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>This study compared contact-phase timing, knee\u2013ankle configuration at the lowest center of mass (COM), and ankle-moment characteristics between basketball players with high and low drop landing vertical jump (DLVJ) rebound efficiency.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Forty-one highly trained male basketball players were classified as high (\n                      <jats:italic>n<\/jats:italic>\n                      \u202f=\u202f21) or low efficiency (\n                      <jats:italic>n<\/jats:italic>\n                      \u202f=\u202f20). Participants performed a 30-cm box DLVJ while three-dimensional kinematic and kinetic data were recorded. Between-group differences were tested using two-sided Mann\u2013Whitney U tests with Benjamini\u2013Hochberg false discovery rate (FDR) correction. Spearman rank correlations between rebound efficiency and biomechanical variables were examined in the full sample.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The high-efficiency group achieved greater DLVJ height (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.014, q\u202f=\u202f0.027) and rebound efficiency (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.001, q\u202f&amp;lt;\u202f0.001), whereas relative squat one-repetition maximum did not differ (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.235, q\u202f=\u202f0.353). Contact, braking, and propulsive times were shorter in the high-efficiency group (all\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.001, all q\u202f&amp;lt;\u202f0.001). At the lowest COM, knee flexion and ankle dorsiflexion angles were smaller (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f&amp;lt;\u202f0.001, q\u202f&amp;lt;\u202f0.001;\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.006, q\u202f=\u202f0.016, respectively). The high-efficiency group also showed a greater mean ankle moment during braking (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.014, q\u202f=\u202f0.027) and reached peak ankle moment earlier during braking (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.002, q\u202f=\u202f0.007) and propulsion (\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.007, q\u202f=\u202f0.016). Peak ankle moment during braking and propulsion showed uncorrected between-group differences (both\n                      <jats:italic>p<\/jats:italic>\n                      \u202f=\u202f0.046), but neither remained significant after FDR correction (both q\u202f=\u202f0.079).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Greater DLVJ rebound efficiency in highly trained basketball players was associated with shorter contact-phase durations, smaller knee flexion and ankle dorsiflexion at the lowest COM, and earlier ankle-moment timing during landing-to-repropulsion. These differences were not accompanied by higher relative maximal squat strength, suggesting that rebound efficiency reflects task-specific landing-transition characteristics rather than maximal lower-limb strength alone. Because contact time is included in the rebound-efficiency calculation, temporal findings should be interpreted as component characteristics, not independent outcomes. Knee\u2013ankle configuration and ankle-moment timing may offer task-specific observational information on distal ankle-joint kinetic involvement during DLVJ performance.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpsyg.2026.1904882","type":"journal-article","created":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T04:21:55Z","timestamp":1785385315000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Differences in knee-ankle configuration and ankle joint kinetic characteristics during a drop landing vertical jump task in highly trained male basketball players: a cross-sectional study based on rebound efficiency"],"prefix":"10.3389","volume":"17","author":[{"given":"Yanzhi","family":"He","sequence":"first","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]},{"name":"Sports Science Research Institute, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zilong","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]},{"name":"Sports Science Research Institute, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenxin","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huizi","family":"Cui","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]},{"name":"Sports Science Research Institute, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bojun","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianming","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianfu","family":"Cheng","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chaofu","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Physical Education, Jimei University","place":["Xiamen, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,7,30]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"69","DOI":"10.1136\/bjsm.2006.032318","article-title":"Time\u2013motion analysis and physiological data of elite under-19-year-old basketball players during competition","volume":"41","author":"Abdelkrim","year":"2007","journal-title":"Br. J. Sports Med."},{"key":"ref2","doi-asserted-by":"publisher","first-page":"190","DOI":"10.3390\/life13010190","article-title":"Assessment of countermovement jump: what should we report?","volume":"13","author":"Anicic","year":"2023","journal-title":"Life"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"1346","DOI":"10.1519\/JSC.0b013e3181cf7510","article-title":"Positional role and competitive-level differences in elite-level men's basketball players","volume":"24","author":"Ben Abdelkrim","year":"2010","journal-title":"J. Strength Cond. Res."},{"key":"ref4","doi-asserted-by":"publisher","first-page":"1","DOI":"10.47206\/ijsc.v4i1.279","article-title":"Vertical jump and relative strength are strongly associated with change of direction in professional male basketball players","volume":"4","author":"Ben\u00edtez-Flores","year":"2024","journal-title":"Int. J. Strength Conditioning"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"332","DOI":"10.1249\/00005768-198708000-00003","article-title":"Drop jumping. I. The influence of jumping technique on the biomechanics of jumping","volume":"19","author":"Bobbert","year":"1987","journal-title":"Med. Sci. Sports Exerc."},{"key":"ref6","doi-asserted-by":"publisher","first-page":"511","DOI":"10.1016\/S0268-0033(03)00071-8","article-title":"Lower extremity stiffness: implications for performance and injury","volume":"18","author":"Butler","year":"2003","journal-title":"Clin. Biomech."},{"key":"ref7","doi-asserted-by":"publisher","first-page":"1425475","DOI":"10.3389\/fspor.2024.1425475","article-title":"Differences in anthropometric and vertical jump force-time characteristics between U16 and U18 female basketball players","volume":"6","author":"Cabarkapa","year":"2024","journal-title":"Front. Sports Active Living"},{"key":"ref9","doi-asserted-by":"publisher","first-page":"494","DOI":"10.1037\/0033-2909.114.3.494","article-title":"Dominance statistics: ordinal analyses to answer ordinal questions","volume":"114","author":"Cliff","year":"1993","journal-title":"Psychol. Bull."},{"key":"ref10","doi-asserted-by":"publisher","first-page":"155","DOI":"10.1037\/0033-2909.112.1.155","article-title":"A power primer","volume":"112","author":"Cohen","year":"1992","journal-title":"Psychol. Bull."},{"key":"ref11","doi-asserted-by":"publisher","first-page":"1653751","DOI":"10.3389\/fbioe.2025.1653751","article-title":"Effects of lower limb biomechanical characteristics on jump performance in female volleyball players based on long stretch\u2013shortening cycle movements","volume":"13","author":"Deng","year":"2025","journal-title":"Front. Bioeng. Biotechnol."},{"key":"ref12","doi-asserted-by":"publisher","first-page":"32","DOI":"10.1519\/SSC.0b013e318187e25b","article-title":"The use of contact time and the reactive strength index to optimize fast stretch-shortening cycle training","volume":"30","author":"Flanagan","year":"2008","journal-title":"Strength Cond. J."},{"key":"ref13","doi-asserted-by":"publisher","first-page":"31","DOI":"10.1186\/s40798-020-00260-z","article-title":"Test-retest reliability of the one-repetition maximum (1RM) strength assessment: a systematic review","volume":"6","author":"Grgic","year":"2020","journal-title":"Sports Medicine - Open"},{"key":"ref14","doi-asserted-by":"publisher","first-page":"E35","DOI":"10.1055\/a-0608-4280","article-title":"Landing styles influences reactive strength index without increasing risk for injury","volume":"2","author":"Guy-Cherry","year":"2018","journal-title":"Sports Medicine International Open"},{"key":"ref15","doi-asserted-by":"publisher","first-page":"1923","DOI":"10.1007\/s40279-019-01170-1","article-title":"High-intensity acceleration and deceleration demands in elite team sports competitive match play: a systematic review and meta-analysis of observational studies","volume":"49","author":"Harper","year":"2019","journal-title":"Sports Med."},{"key":"ref16","doi-asserted-by":"publisher","first-page":"572","DOI":"10.4085\/1062-6050-344-18","article-title":"An updated model of chronic ankle instability","volume":"54","author":"Hertel","year":"2019","journal-title":"J. Athl. Train."},{"key":"ref17","doi-asserted-by":"publisher","first-page":"1197","DOI":"10.1016\/S0021-9290(00)00064-6","article-title":"Stretch-shortening cycle: a powerful model to study normal and fatigued muscle","volume":"33","author":"Komi","year":"2000","journal-title":"J. Biomech."},{"key":"ref18","doi-asserted-by":"publisher","first-page":"666","DOI":"10.1016\/j.jbiomech.2011.12.011","article-title":"Effect of low pass filtering on joint moments from inverse dynamics: implications for injury prevention","volume":"45","author":"Kristianslund","year":"2012","journal-title":"J. Biomech."},{"key":"ref19","doi-asserted-by":"publisher","first-page":"674","DOI":"10.4085\/1062-6050-466-20","article-title":"Epidemiology of injuries in National Collegiate Athletic Association women's basketball: 2014-2015 through 2018-2019","volume":"56","author":"Lempke","year":"2021","journal-title":"J. Athl. Train."},{"key":"ref20","doi-asserted-by":"publisher","first-page":"35","DOI":"10.37190\/abb\/215507","article-title":"Biomechanical effects of squat depth and movement speed on knee joint loading in tai chi novice","volume":"27","author":"Li","year":"2025","journal-title":"Acta Bioeng. Biomech."},{"key":"ref22","first-page":"653","article-title":"Are landing biomechanics altered in elite athletes with chronic ankle instability?","volume":"18","author":"Lin","year":"2019","journal-title":"J. Sports Sci. Med."},{"key":"ref24","doi-asserted-by":"publisher","first-page":"317","DOI":"10.1123\/ijspp.2021-0451","article-title":"Defining training and performance caliber: a participant classification framework","volume":"17","author":"McKay","year":"2022","journal-title":"Int. J. Sports Physiol. Perform."},{"key":"ref25","doi-asserted-by":"publisher","first-page":"201","DOI":"10.1519\/JSC.0b013e3181bd4c3e","article-title":"Determinants of the abilities to jump higher and shorten the contact time in a running 1-legged vertical jump in basketball","volume":"24","author":"Miura","year":"2010","journal-title":"J. Strength Cond. Res."},{"key":"ref27","doi-asserted-by":"publisher","first-page":"681","DOI":"10.4085\/1062-6050-436-20","article-title":"Epidemiology of injuries in National Collegiate Athletic Association men's basketball: 2014-2015 through 2018-2019","volume":"56","author":"Morris","year":"2021","journal-title":"J. Athl. Train."},{"key":"ref28","doi-asserted-by":"publisher","first-page":"126860","DOI":"10.1155\/2014\/126860","article-title":"Peak vertical ground reaction force during two-leg landing: a systematic review and mathematical modeling","volume":"2014","author":"Niu","year":"2014","journal-title":"Biomed. Res. Int."},{"key":"ref30","doi-asserted-by":"publisher","first-page":"239","DOI":"10.3390\/sports11120239","article-title":"Vertical jump neuromuscular performance characteristics determining on-court contribution in male and female NCAA division 1 basketball players","volume":"11","author":"Philipp","year":"2023","journal-title":"Sports"},{"key":"ref31","author":"Romano","year":"2006"},{"key":"ref32","doi-asserted-by":"publisher","first-page":"211","DOI":"10.1080\/14763141.2020.1836252","article-title":"Verbal instructions affect reactive strength index modified and time-series waveforms in basketball players","volume":"23","author":"S\u00e1nchez-Sixto","year":"2024","journal-title":"Sports Biomech."},{"key":"ref33","first-page":"221","article-title":"Reliability of the one-repetition maximum test based on muscle group and gender","volume":"11","author":"Seo","year":"2012","journal-title":"J. Sports Sci. Med."},{"key":"ref34","doi-asserted-by":"publisher","first-page":"1347","DOI":"10.1080\/02640414.2012.710755","article-title":"A review of models of vertical, leg, and knee stiffness in adults for running, jumping or hopping tasks","volume":"30","author":"Serpell","year":"2012","journal-title":"J. Sports Sci."},{"key":"ref35","doi-asserted-by":"publisher","first-page":"210","DOI":"10.1016\/j.ptsp.2018.06.003","article-title":"Individuals with chronic ankle instability exhibit dynamic postural stability deficits and altered unilateral landing biomechanics: a systematic review","volume":"37","author":"Simpson","year":"2019","journal-title":"Phys. Ther. Sport"},{"key":"ref36","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1007\/s40279-017-0794-z","article-title":"The activity demands and physiological responses encountered during basketball match-play: a systematic review","volume":"48","author":"Stojanovic","year":"2018","journal-title":"Sports Med."},{"key":"ref37","doi-asserted-by":"publisher","first-page":"765","DOI":"10.1007\/s40279-018-0862-z","article-title":"The importance of muscular strength: training considerations","volume":"48","author":"Suchomel","year":"2018","journal-title":"Sports Med."},{"key":"ref38","doi-asserted-by":"publisher","first-page":"1419","DOI":"10.1007\/s40279-016-0486-0","article-title":"The importance of muscular strength in athletic performance","volume":"46","author":"Suchomel","year":"2016","journal-title":"Sports Med."},{"key":"ref39","first-page":"951","article-title":"Asymmetry between the dominant and non-dominant legs in the kinematics of the lower extremities during a running single leg jump in collegiate basketball players","volume":"13","author":"Sugiyama","year":"2014","journal-title":"J. Sports Sci. Med."},{"key":"ref40","doi-asserted-by":"publisher","first-page":"1","DOI":"10.47206\/ijsc.v1i1.52","article-title":"The occurrence of different vertical jump types in basketball competition and their relationship with lower-body speed-strength qualities","volume":"1","author":"Talpey","year":"2021","journal-title":"Int. J. Strength Conditioning"},{"key":"ref42","doi-asserted-by":"publisher","first-page":"147","DOI":"10.2165\/00007256-200939020-00004","article-title":"Factors modulating post-activation potentiation and its effect on performance of subsequent explosive activities","volume":"39","author":"Tillin","year":"2009","journal-title":"Sports Med."},{"key":"ref43","doi-asserted-by":"publisher","first-page":"2325967118805400","DOI":"10.1177\/2325967118805400","article-title":"10-year epidemiology of ankle injuries in men's and women's collegiate basketball","volume":"6","author":"Tummala","year":"2018","journal-title":"Orthop. J. Sports Med."},{"key":"ref45","doi-asserted-by":"publisher","first-page":"S65","DOI":"10.1016\/j.chest.2020.03.012","article-title":"Cross-sectional studies: strengths, weaknesses, and recommendations","volume":"158","author":"Wang","year":"2020","journal-title":"Chest"},{"key":"ref46","doi-asserted-by":"publisher","first-page":"1778145","DOI":"10.3389\/fpsyg.2026.1778145","article-title":"The impact of physical-mental mixed fatigue on landing biomechanics inter-joint coordination and injury risk in elite American football players","volume":"17","author":"Wang","year":"","journal-title":"Front. Psychol."},{"key":"ref47","doi-asserted-by":"publisher","first-page":"17855","DOI":"10.1038\/s41598-026-50165-2","article-title":"The impact of mental fatigue on drop landing injury risk and lower limb asymmetry in elite collegiate American football players","volume":"16","author":"Wang","year":"","journal-title":"Sci. Rep."},{"key":"ref48","doi-asserted-by":"publisher","first-page":"110027","DOI":"10.1016\/j.gaitpost.2025.110027","article-title":"Investigation on the effects of mental fatigue on drop landing motion control in individuals with functional ankle instability: a biomechanical perspective","volume":"124","author":"Wang","year":"2025","journal-title":"Gait Posture"},{"key":"ref49","doi-asserted-by":"publisher","first-page":"18667","DOI":"10.1038\/s41598-023-45794-w","article-title":"Ankle biomechanics of the three-step layup in a basketball player with chronic ankle instability","volume":"13","author":"Wang","year":"2023","journal-title":"Sci. Rep."},{"key":"ref52","doi-asserted-by":"publisher","first-page":"3718","DOI":"10.3390\/app14093718","article-title":"The association between countermovement rebound jump metrics and independent measures of athletic performance","volume":"14","author":"Xu","year":"","journal-title":"Appl. Sci."},{"key":"ref53","doi-asserted-by":"publisher","first-page":"e150","DOI":"10.1519\/JSC.0000000000004687","article-title":"The countermovement rebound jump: between-session reliability and a comparison with the countermovement and drop jump tests","volume":"38","author":"Xu","year":"","journal-title":"J. Strength Cond. Res."},{"key":"ref54","doi-asserted-by":"publisher","first-page":"10680","DOI":"10.3390\/app131910680","article-title":"Countermovement rebound jump: a comparison of joint work and joint contribution to the countermovement and drop jump tests","volume":"13","author":"Xu","year":"2023","journal-title":"Appl. Sci."},{"key":"ref56","doi-asserted-by":"publisher","first-page":"1458722","DOI":"10.3389\/fspor.2024.1458722","article-title":"Kinetic variables of the lower limb joint that affect the drop jump index at different drop heights","volume":"6","author":"Yoshida","year":"2024","journal-title":"Front. Sports Active Living"},{"key":"ref57","doi-asserted-by":"publisher","first-page":"332","DOI":"10.1016\/j.jsams.2009.02.009","article-title":"Vertical jump in female and male basketball players\u2014a review of observational and experimental studies","volume":"13","author":"Ziv","year":"2010","journal-title":"J. Sci. Med. Sport"}],"container-title":["Frontiers in Psychology"],"original-title":[],"link":[{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpsyg.2026.1904882\/full","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T04:21:56Z","timestamp":1785385316000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fpsyg.2026.1904882\/full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7,30]]},"references-count":47,"alternative-id":["10.3389\/fpsyg.2026.1904882"],"URL":"https:\/\/doi.org\/10.3389\/fpsyg.2026.1904882","relation":{},"ISSN":["1664-1078"],"issn-type":[{"value":"1664-1078","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7,30]]},"article-number":"1904882"}}