title: Comparison of hip and knee strength in males with and without patellofemoral pain.
abstract: OBJECTIVE
  The primary purpose of this study was to compare hip strength in males with and without patellofemoral pain (PFP). The secondary purpose was to compare knee strength in males with and without PFP.
  
  
  METHODS
  Secondary analysis of cross-sectional data for males with and without PFP from a larger randomized controlled trial examining hip and core versus knee-muscle strengthening for the treatment of PFP.
  
  
  METHODS
  Laboratory setting.
  
  
  METHODS
  Sixty-six males with PFP and 36 controls.
  
  
  METHODS
  Peak isometric force for the hip abductors, external rotators, internal rotators, extensors, and knee extensors expressed as a percentage of body mass (%BM).
  
  
  RESULTS
  No differences existed with respect to any of the hip strength measures (P > .05). Males with PFP demonstrated almost 17% less knee extensor strength than controls (mean difference = 7.3 %BM; 95% confidence interval, 1.3-13.4 %BM; t = 2.41; P = .02).
  
  
  CONCLUSIONS
  Unlike females, males with PFP did not demonstrate hip muscle weakness. However, differences did exist with knee extensor strength. These data provide preliminary evidence for the potential need for sex-specific interventions for individuals with PFP.
authors: EC-1334, Department of Physical Therapy, College of Allied Health Sciences, Georgia Regents University, Augusta, GA 30912, USA. Electronic address: lbolgla@gru.edu.
authors: Lori A
authors: LA
authors: Bolgla
authors: Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA.
authors: Jennifer
authors: J
authors: Earl-Boehm
authors: Faculties of Kinesiology and Medicine, University of Calgary, Calgary, AB, Canada.
authors: Carolyn
authors: C
authors: Emery
authors: Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA.
authors: Karrie
authors: K
authors: Hamstra-Wright
authors: Faculties of Kinesiology and Nursing, University of Calgary, Calgary, AB, Canada.
authors: Reed
authors: R
authors: Ferber
mesh_terms: D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena; D003430:Cross-Sectional Studies; D005260:Female; D006621:Hip Joint / Q000503:physiopathology*; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D007719:Knee Joint / Q000503:physiopathology*; D008297:Male; D053580:Muscle Strength / Q000502:physiology*; D046788:Patellofemoral Pain Syndrome / Q000503:physiopathology*; D055815:Young Adult
keywords: Hip; Male; Patellofemoral pain