{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T17:09:17Z","timestamp":1784826557008,"version":"3.55.0"},"reference-count":55,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2014,2,12]],"date-time":"2014-02-12T00:00:00Z","timestamp":1392163200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2015,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The instep soccer kick is a pre\u2010programmed ballistic movement with a typical agonist\u2013antagonist coordination pattern. The coordination pattern of the kick can provide insight into deficient neuromuscular control. The purpose of this study was to investigate knee kinematics and hamstrings\/quadriceps coordination pattern during the knee ballistic extension phase of the instep kick in soccer players after anterior cruciate ligament reconstruction (ACL reconstruction).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Seventeen players from the Portuguese Soccer League participated in this study. Eight ACL\u2010reconstructed athletes (experimental group) and 9 healthy individuals (control group) performed three instep kicks. Knee kinematics (flexion and extension angles at football contact and maximum velocity instants) were calculated during the kicks. Rectus femoris (RF), vastus lateralis, vastus medialis, biceps femoralis, and semitendinosus muscle activations were quantified during the knee extension phase.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The ACL\u2010reconstructed group had significantly lower knee extension angle (\u22121.2 \u00b1 1.6, <jats:italic>p<\/jats:italic> &lt; 0.021) and increased variability (1.1 \u00b1 1.2, <jats:italic>p<\/jats:italic> &lt; 0.012) when compared with the control group. Within the EMG variables, the RF had a significantly greater activity in the ACL\u2010reconstructed group than in the control group (79.9 \u00b1 27.7 % MVC vs. 49.2 \u00b1 20.8 % MVC, respectively, <jats:italic>p<\/jats:italic> &lt; 0.034). No other statistically significant differences were found.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The findings of this study demonstrate that changes in ACL\u2010reconstructed individuals were observed on knee extension angle and RF muscle activation while performing an instep kick. These findings are in accordance with the knee stability recovery process after ACL reconstruction. No differences were observed in the ballistic control movement pattern between normal and ACL\u2010reconstructed subjects. Performing open kinetic chain exercises using ballistic movements can be beneficial when recovering from ACL reconstruction. The exercises should focus on achieving multi\u2010joint coordination and full knee extension (range of motion).<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>III.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-014-2894-8","type":"journal-article","created":{"date-parts":[[2014,2,11]],"date-time":"2014-02-11T01:47:24Z","timestamp":1392083244000},"page":"1100-1106","source":"Crossref","is-referenced-by-count":12,"title":["Dynamic knee stability and ballistic knee movement after ACL reconstruction: an application on instep soccer kick"],"prefix":"10.1002","volume":"23","author":[{"given":"Nuno","family":"Cordeiro","sequence":"first","affiliation":[{"name":"Interdisciplinary Centre for the Study of Human Performance Faculty of Human Kinetics University of Lisbon Lisbon Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nelson","family":"Cortes","sequence":"additional","affiliation":[{"name":"Sports Medicine Assessment Research &amp; Testing (SMART) Laboratory George Mason University Manassas VA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Orlando","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Sport Sciences Department Technology and Science School Evora University \u00c9vora Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana","family":"Diniz","sequence":"additional","affiliation":[{"name":"Interdisciplinary Centre for the Study of Human Performance Faculty of Human Kinetics University of Lisbon Lisbon Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pedro","family":"Pezarat\u2010Correia","sequence":"additional","affiliation":[{"name":"Interdisciplinary Centre for the Study of Human Performance Faculty of Human Kinetics University of Lisbon Lisbon Portugal"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,2,12]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0b013e3181d6508c"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354658401200102"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.2466\/pms.2001.92.2.563"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.3109\/17453679508995538"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354658901700101"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.73B5.1894677"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.75B2.8444956"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s004020050317"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354659702500311"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.2007.2255"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00364466"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1080\/14763140902752106"},{"key":"e_1_2_6_14_1","doi-asserted-by":"crossref","unstructured":"CordeiroN Pezarat\u2010CorreiaP FernandesO CabriJ(2007)Agonist\/antagonist pattern and movement characteristics during ballistic knee extension 12 weeks after ACL reconstruction.Med Sci Sport Exer (No. 5 Supplement) ppS264","DOI":"10.1249\/01.mss.0000274012.48706.19"},{"issue":"5","key":"e_1_2_6_15_1","article-title":"Portuguese Version of Tampa Scale of Kinesiophobia (13 Items).","volume":"43","author":"Cordeiro N","year":"2011","journal-title":"Med Sci Sport Exer"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.74B2.1544962"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600\u20100838.1999.tb00233.x"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1080\/026404102753576062"},{"issue":"2","key":"e_1_2_6_19_1","first-page":"154","article-title":"Biomechanical characteristics and determinants of instep soccer kick","volume":"6","author":"Eleftherios E","year":"2007","journal-title":"J Sport Sci Med"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1097\/AJP.0b013e31822363f4"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2009.01.009"},{"key":"e_1_2_6_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2009.10.012"},{"key":"e_1_2_6_23_1","doi-asserted-by":"publisher","DOI":"10.1177\/036354658801600502"},{"key":"e_1_2_6_24_1","unstructured":"HermensHJ FreriksB(1997)The State of the Art on Sensors and Sensor Placement Procedures for Surface ElectroMyoGraphy: A proposal for sensor placement procedures. 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