{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T21:42:05Z","timestamp":1790631725446,"version":"4.1.0"},"reference-count":70,"publisher":"Human Kinetics","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,2,1]]},"abstract":"Context<\/jats:bold>:<\/jats:italic> Patellar tendinopathy (PT) is prevalent in physically active populations, and it affects their quality of living, performance of activity, and may contribute to the early cessation of their athletic careers. A number of previous studies have identified contributing factors for PT; however, their contributions to self-reported dysfunction remain unclear. Objective<\/jats:bold>:<\/jats:italic> The purpose of this investigation was to determine if strength, flexibility, and various lower-extremity static alignments contributed to self-reported function and influence the severity of PT. Design<\/jats:bold>:<\/jats:italic> Cross-sectional research design. Setting<\/jats:bold>:<\/jats:italic> University laboratory. Participants<\/jats:bold>:<\/jats:italic> A total of 30 participants with PT volunteered for this study (age: 23.4 [3.6]\u00a0y, height: 1.8 [0.1]\u00a0m, mass: 80.0 [20.3]\u00a0kg, body mass index: 25.7 [4.3]). Main Outcome Measures<\/jats:bold>:<\/jats:italic> Participants completed 7 different patient-reported outcomes. Isometric knee extension and flexion strength, hamstring flexibility and alignment measures of rearfoot angle, navicular drop, tibial torsion, q-angle, genu recurvatum, pelvic tilt, and leg length differences were assessed. Pearson\u2019s correlation coefficients were assessed to determine significantly correlated outcome variables with each of the patient-reported outcomes. The factors with the highest correlations were used to identify factors that contribute the most to pain and dysfunction using backward selection, linear regression models. Results<\/jats:bold>:<\/jats:italic> Correlation analysis found significant relationships between questionnaires and body mass index (r<\/jats:italic>\u2009=\u2009\u2212.35\u2013.46), normalized knee extension (r<\/jats:italic>\u2009=\u2009.38\u2013.50) and flexion strength (r<\/jats:italic>\u2009=\u2009\u2212.34\u2013.50), flexibility (r<\/jats:italic>\u2009=\u2009.32\u2013.38, q-angle (r<\/jats:italic>\u2009=\u2009.38\u2013.56), and pelvic tilt (r<\/jats:italic>\u2009=\u2009\u2212.40). Regression models (R<\/jats:italic>2<\/jats:sup>\u2009=\u2009.22\u2013.54) identified thigh musculature strength and supine q-angle to have greatest predictability for severity in patient-reported outcomes. Conclusions<\/jats:bold>:<\/jats:italic> These findings put an emphasis of bodyweight management, improving knee extensor and flexor strength, and posterior flexibility in PT patients.<\/jats:p>","DOI":"10.1123\/jsr.2017-0196","type":"journal-article","created":{"date-parts":[[2017,11,15]],"date-time":"2017-11-15T14:36:09Z","timestamp":1510756569000},"page":"165-170","source":"Crossref","is-referenced-by-count":11,"title":["Clinical Measures and Their Contribution to Dysfunction in Individuals With Patellar Tendinopathy"],"prefix":"10.1123","volume":"28","author":[{"given":"Hyunjae","family":"Jeon","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Melanie L.","family":"McGrath","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Neal","family":"Grandgenett","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam B.","family":"Rosen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"key":"ref31","first-page":"1","article-title":"Patellar tendinopathy: pathomechanics and a modern approach to treatment","volume":"2","author":"Cook","year":"2001","journal-title":"Int Sport Med J"},{"key":"ref471","doi-asserted-by":"crossref","first-page":"246","DOI":"10.4085\/1062-6050-46.3.246","article-title":"A preliminary multifactorial approach describing the relationships among lower extremity alignment, hip muscle activation, and lower extremity joint excursion","volume":"46","author":"Nguyen","year":"2011","journal-title":"J Athl Train"},{"key":"ref191","doi-asserted-by":"crossref","first-page":"229","DOI":"10.2147\/OAJSM.S39331","article-title":"Risk factors associated with medial tibial stress syndrome in runners: a systematic review and meta-analysis","volume":"4","author":"Newman","year":"2013","journal-title":"Open Access J Sports Med"},{"key":"ref301","doi-asserted-by":"crossref","first-page":"2325967113492707","DOI":"10.1177\/2325967113492707","article-title":"Risk factors for lower extremity tendinopathies in military personnel","volume":"1","author":"Owens","year":"2013","journal-title":"Orthop J Sports Med"},{"key":"ref561","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1007\/BF00266208","article-title":"Factors predisposing to patellar chondropathy and patellar apicitis in athletes","volume":"10","author":"Kujala","year":"1986","journal-title":"Int Orthop"},{"key":"ref321","doi-asserted-by":"crossref","first-page":"217","DOI":"10.1136\/bjsm.2006.032417","article-title":"The evolution of eccentric training as treatment for patellar tendinopathy (jumper\u2019s knee): a critical review of exercise programmes","volume":"41","author":"Visnes","year":"2007","journal-title":"Br J Sports Med"},{"key":"ref181","first-page":"155","article-title":"Assessment and evaluation of predisposing factors to anterior cruciate ligament injury","volume":"34","author":"Bonci","year":"1999","journal-title":"J Athl Train"},{"key":"ref121","doi-asserted-by":"crossref","first-page":"246","DOI":"10.4085\/1062-6050-46.3.246","article-title":"A preliminary multifactorial approach describing the relationships among lower extremity alignment, hip muscle activation, and lower extremity joint excursion","volume":"46","author":"Nguyen","year":"2011","journal-title":"J Athl Train"},{"key":"ref311","doi-asserted-by":"crossref","first-page":"581","DOI":"10.1136\/bjsm.2003.006015","article-title":"Are unilateral and bilateral patellar tendinopathy distinguished by differences in anthropometry, body composition, or muscle strength in elite female basketball players?","volume":"38","author":"Gaida","year":"2004","journal-title":"Br J Sports Med"},{"key":"ref391","doi-asserted-by":"crossref","first-page":"689","DOI":"10.1177\/03635465020300051001","article-title":"Long-term prognosis for jumper\u2019s knee in male athletes. 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