{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T02:00:01Z","timestamp":1787882401468,"version":"build-2784847793"},"reference-count":15,"publisher":"Human Kinetics","issue":"8","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,11,1]]},"abstract":"<jats:p><jats:italic><jats:bold>Clinical Scenario<\/jats:bold>:<\/jats:italic> Dynamic knee valgus (DKV) is a mechanical alteration in the knee that leads to increased risk of injury. Weakness of hip musculature in hip abduction (HABD), extension (HEXT), and external rotation (HER) may contribute to increased DKV in single-leg landing tasks. <jats:italic><jats:bold>Focused Clinical Question<\/jats:bold>:<\/jats:italic> Is decreased hip strength associated with an increase in DKV during a single-leg landing task in collegiate female athletes? <jats:italic><jats:bold>Summary of Key Findings<\/jats:bold>:<\/jats:italic> Three studies were included: One randomized control trial (RCT), one cohort study, and one case-control. All three studies found that decreases in HABD and HER strength contributed to increased DKV during single-leg landing tasks. One study also found that the hip extensors contribute to controlling hip adduction, a common factor in many mechanisms of injuries. These three studies recommended strengthening HABD, HEXT, and HER to decrease DKV and reduce the risk of injury at the knee. <jats:italic><jats:bold>Clinical Bottom Line<\/jats:bold>:<\/jats:italic> Weak HABD, HEXT, and HER contribute to increased DKV in college female athletes, but strengthening HABD, HEXT, and HER can lead to decreases in DKV and, overall, reduce the risk of injury at the knee. <jats:italic><jats:bold>Strength of Recommendation<\/jats:bold>:<\/jats:italic> These articles were graded with a level of evidence of III or higher, giving a grade of B strength of recommendation that weak HABD, HEXT, and HER are associated with increased DKV in collegiate female athletes.<\/jats:p>","DOI":"10.1123\/jsr.2021-0043","type":"journal-article","created":{"date-parts":[[2021,6,21]],"date-time":"2021-06-21T00:00:26Z","timestamp":1624233626000},"page":"1220-1223","source":"Crossref","is-referenced-by-count":13,"title":["Weak Hip Strength Increases Dynamic Knee Valgus in Single-Leg Tasks of Collegiate Female Athletes"],"prefix":"10.1123","volume":"30","author":[{"given":"Kyndell R.","family":"Crowell","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan D.","family":"Nokes","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole L.","family":"Cosby","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"5","key":"r1","series-title":"J Sports Med Phys Fitness","first-page":"546","article-title":"Effect of foot type on knee valgus, ground reaction force, and hip muscle activation in female soccer players","volume":"56","author":"Rath ME","year":"2016","unstructured":"Rath ME, Stearne DJ, Walker CR, Cox JC. Effect of foot type on knee valgus, ground reaction force, and hip muscle activation in female soccer players. J Sports Med Phys Fitness. 2016;56(5):546\u2013553. PubMed ID: 2578121525781215"},{"issue":"5","key":"r2","series-title":"J Sport Rehabil","doi-asserted-by":"publisher","first-page":"494","DOI":"10.1123\/jsr.2017-0336","article-title":"Detection of gluteal changes using ultrasound imaging during phases of gait in individuals with medial knee displacement","volume":"28","author":"DeJong AF","year":"2019","unstructured":"DeJong AF, Colby Mangum L, Resch JE, Saliba SA. Detection of gluteal changes using ultrasound imaging during phases of gait in individuals with medial knee displacement. J Sport Rehabil. 2019;28(5):494\u2013504. PubMed ID: 29543116 doi:10.1123\/jsr.2017-03362954311610.1123\/jsr.2017-0336"},{"key":"r3","series-title":"Phys Ther Sport","doi-asserted-by":"publisher","first-page":"174","DOI":"10.1016\/j.ptsp.2018.10.006","article-title":"Relationship of hip and ankle range of motion, trunk muscle endurance with knee valgus and dynamic balance in males","volume":"34","author":"Nakagawa TH","year":"2018","unstructured":"Nakagawa TH, Petersen RS. Relationship of hip and ankle range of motion, trunk muscle endurance with knee valgus and dynamic balance in males. Phys Ther Sport. 2018;34:174\u2013179. PubMed ID: 30347312 doi:10.1016\/j.ptsp.2018.10.0063034731210.1016\/j.ptsp.2018.10.006"},{"issue":"3","key":"r4","series-title":"Sports Health","doi-asserted-by":"publisher","first-page":"223","DOI":"10.1177\/1941738119837622","article-title":"The effect of valgus control instruction exercises on pain, strength, and functionality in active females with patellofemoral pain syndrome","volume":"11","author":"Emamvirdi M","year":"2019","unstructured":"Emamvirdi M, Letafatkar A, Khaleghi Tazji M. The effect of valgus control instruction exercises on pain, strength, and functionality in active females with patellofemoral pain syndrome. Sports Health. 2019;11(3):223\u2013237. PubMed ID: 31034336 doi:10.1177\/194173811983762210.1177\/194173811983762231034336"},{"issue":"04","key":"r5","series-title":"Nurs Health Sci","first-page":"99","article-title":"The relationship between hip strength and peak knee valgus angle during single leg squat","volume":"05","author":"Hussein AS","year":"2016","unstructured":"Hussein AS. The relationship between hip strength and peak knee valgus angle during single leg squat. Nurs Health Sci. 2016;05(04):99\u2013106. doi:10.9790\/1959-05040199106"},{"issue":"1","key":"r6","series-title":"Phys Ther Sport","doi-asserted-by":"publisher","first-page":"66","DOI":"10.1016\/j.ptsp.2014.05.002","article-title":"Relationship between hip and core strength and frontal plane alignment during a single leg squat","volume":"16","author":"Stickler L","year":"2015","unstructured":"Stickler L, Finley M, Gulgin H. Relationship between hip and core strength and frontal plane alignment during a single leg squat. Phys Ther Sport. 2015;16(1):66\u201371. PubMed ID: 25070759 doi:10.1016\/j.ptsp.2014.05.0022507075910.1016\/j.ptsp.2014.05.002"},{"issue":"1","key":"r7","series-title":"J Hum Kinet","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1515\/hukin-2015-0037","article-title":"The Relationship between foot and pelvic alignment while standing","volume":"46","author":"Khamis S","year":"2015","unstructured":"Khamis S, Dar G, Peretz C, Yizhar Z. The Relationship between foot and pelvic alignment while standing. J Hum Kinet. 2015;46(1):85\u201397. doi:10.1515\/hukin-2015-003710.1515\/hukin-2015-003726240652"},{"issue":"1","key":"r8","series-title":"J Foot Ankle Res","doi-asserted-by":"publisher","first-page":"3","DOI":"10.1186\/s13047-016-0134-9","article-title":"The relationship of foot and ankle mobility to the frontal plane projection angle in asymptomatic adults","volume":"9","author":"Wyndow N","year":"2016","unstructured":"Wyndow N, de Jong A, Rial K, et\u00a0al. The relationship of foot and ankle mobility to the frontal plane projection angle in asymptomatic adults. J Foot Ankle Res. 2016;9(1):3. doi:10.1186\/s13047-016-0134-910.1186\/s13047-016-0134-9"},{"key":"r9","series-title":"Clin Biomech","doi-asserted-by":"publisher","first-page":"7","DOI":"10.1016\/j.clinbiomech.2015.10.008","article-title":"Three-dimensional hip and knee kinematics during walking, running, and single-limb drop landing in females with and without genu valgum","volume":"31","author":"Barrios JA","year":"2016","unstructured":"Barrios JA, Heitkamp CA, Smith BP, Sturgeon MM, Suckow DW, Sutton CR. Three-dimensional hip and knee kinematics during walking, running, and single-limb drop landing in females with and without genu valgum. Clin Biomech. 2016;31:7\u201311. PubMed ID: 26515886 doi:10.1016\/j.clinbiomech.2015.10.00810.1016\/j.clinbiomech.2015.10.008"},{"issue":"11","key":"r10","series-title":"J Orthop Sports Phys Ther","doi-asserted-by":"publisher","first-page":"1002","DOI":"10.2519\/jospt.2016.6621","article-title":"The association of ankle dorsiflexion range of motion with hip and knee kinematics during the lateral step-down test","volume":"46","author":"Rabin A","year":"2016","unstructured":"Rabin A, Portnoy S, Kozol Z. The association of ankle dorsiflexion range of motion with hip and knee kinematics during the lateral step-down test. J Orthop Sports Phys Ther. 2016;46(11):1002\u20131009. doi:10.2519\/jospt.2016.662110.2519\/jospt.2016.662127686412"},{"issue":"5","key":"r11","series-title":"Int J Sports Phys Ther","first-page":"592","article-title":"The influence of hip strength on knee kinematics during a single-legged medial drop landing among competitive collegiate basketball players","volume":"10","author":"Suzuki H","year":"2015","unstructured":"Suzuki H, Omori G, Uematsu D, Nishino K, Endo N. The influence of hip strength on knee kinematics during a single-legged medial drop landing among competitive collegiate basketball players. Int J Sports Phys Ther. 2015;10(5):592\u2013601. PubMed ID: 2649160926491609"},{"key":"r12","series-title":"Phys Ther Sport","doi-asserted-by":"publisher","first-page":"66","DOI":"10.1016\/j.ptsp.2016.05.007","article-title":"Relationship of hip and trunk muscle function with single leg step-down performance: implications for return to play screening and rehabilitation","volume":"22","author":"Burnham JM","year":"2016","unstructured":"Burnham JM, Yonz MC, Robertson KE, et\u00a0al. Relationship of hip and trunk muscle function with single leg step-down performance: implications for return to play screening and rehabilitation. Phys Ther Sport. 2016;22:66\u201373. PubMed ID: 27592407 doi:10.1016\/j.ptsp.2016.05.00710.1016\/j.ptsp.2016.05.00727592407"},{"issue":"1","key":"r13","series-title":"J Strength Cond Res","doi-asserted-by":"publisher","first-page":"282","DOI":"10.1519\/JSC.0000000000001069","article-title":"Hip external rotator strength is associated with better dynamic control of the lower extremity during landing tasks","volume":"30","author":"Malloy PJ","year":"2016","unstructured":"Malloy PJ, Morgan AM, Meinerz CM, Geiser CF, Kipp K. Hip external rotator strength is associated with better dynamic control of the lower extremity during landing tasks. J Strength Cond Res. 2016;30(1):282\u2013291. PubMed ID: 26110347 doi:10.1519\/JSC.000000000000106910.1519\/JSC.000000000000106926110347"},{"issue":"3","key":"r14","series-title":"Int J Sports Phys Ther","first-page":"341","article-title":"The associations between hip strength and hip kinematics during a single leg hop in recreational athletes post ACL reconstruction compared to healthy controls","volume":"12","author":"Tate J","year":"2017","unstructured":"Tate J, Suckut T, Wages J, Lyles H, Perrin B. The associations between hip strength and hip kinematics during a single leg hop in recreational athletes post ACL reconstruction compared to healthy controls. Int J Sports Phys Ther. 2017;12(3):341\u2013351. PubMed ID: 2859308828593088"},{"issue":"1","key":"r15","series-title":"Hum Mov","doi-asserted-by":"publisher","first-page":"64","DOI":"10.5114\/hm.2018.73614","article-title":"Gluteal activation and increased frontal plane projection angle during a step-down test in young women","volume":"19","author":"Barbosa AC","year":"2018","unstructured":"Barbosa AC, Vieira ER, Barbosa MA, Fernandes I, Dam\u00e1zio M, Badar\u00f3 B. Gluteal activation and increased frontal plane projection angle during a step-down test in young women. Hum Mov. 2018;19(1):64\u201370. doi:10.5114\/hm.2018.7361410.5114\/hm.2018.73614"}],"container-title":["Journal of Sport Rehabilitation"],"original-title":[],"link":[{"URL":"https:\/\/journals.humankinetics.com\/view\/journals\/jsr\/30\/8\/article-p1220.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.humankinetics.com\/downloadpdf\/journals\/jsr\/30\/8\/article-p1220.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/journals.humankinetics.com\/downloadpdf\/journals\/jsr\/30\/8\/article-p1220.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T23:29:36Z","timestamp":1756337376000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.humankinetics.com\/view\/journals\/jsr\/30\/8\/article-p1220.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,11,1]]},"references-count":15,"journal-issue":{"issue":"8"},"URL":"https:\/\/doi.org\/10.1123\/jsr.2021-0043","relation":{},"ISSN":["1056-6716","1543-3072"],"issn-type":[{"value":"1056-6716","type":"print"},{"value":"1543-3072","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,11,1]]}}}