title: Functional performance deficits in athletes with previous lower extremity injury.
abstract: OBJECTIVE
  To evaluate the influence of previously treated, though clinically resolved, lower extremity injury on performance in a timed 20-meter shuttle run.
  
  
  METHODS
  Case control study.
  
  
  METHODS
  National Collegiate Athletic Association (NCAA) Division I college during the 2000/2001 preparticipation physicals.
  
  
  METHODS
  NCAA Division I athletes (n = 213) participated in this research study. Athletes were excluded if they presently had an unresolved lower extremity injury or low back pain.
  
  
  METHODS
  Time to complete a 20-meter shuttle run was recorded. Previous lower extremity injury and college year were recorded via a short questionnaire.
  
  
  RESULTS
  A significantly slower response time on the 20-meter shuttle run was observed in freshman athletes with a history of a lower extremity injury, as compared with freshmen without a previous injury (p = 0.01). No significant difference was noted in non-freshman collegiate athletes regardless of injury history (p = 0.98).
  
  
  CONCLUSIONS
  Kinetic chain deficits may exist long after symptomatic recovery from injury resulting in functional deficits, which may be missed on a standard physical assessment. The slower shuttle run times observed in freshmen with previous lower extremity injury may be a manifestation of insufficient treatment received at the high school level or the benefit of a mandatory core strengthening program in returning athletes. Further study is necessary to identify and validate the cause-and-effect relationship.
  
  
  CONCLUSIONS
  This study may support residual functional deficits in incoming college athletes, which may be related to inadequate care in the high school setting.
authors.affiliation: Department of Physical Medicine and Rehabilitation, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark 07103, USA. Sfnadler@cs.com
authors.forename: Scott F
authors.initials: SF
authors.lastname: Nadler
authors.forename: Gerard A
authors.initials: GA
authors.lastname: Malanga
authors.forename: Joseph H
authors.initials: JH
authors.lastname: Feinberg
authors.forename: Mariam
authors.initials: M
authors.lastname: Rubanni
authors.forename: Peter
authors.initials: P
authors.lastname: Moley
authors.forename: Patrick
authors.initials: P
authors.lastname: Foye
mesh_terms: D000293:Adolescent; D000328:Adult; D001265:Athletic Injuries / Q000503:physiopathology* / Q000534:rehabilitation; D016022:Case-Control Studies; D006801:Humans; D007869:Leg Injuries / Q000503:physiopathology* / Q000534:rehabilitation; D017116:Low Back Pain / Q000503:physiopathology*; D020127:Recovery of Function; D012420:Running / Q000293:injuries*; D013177:Sports; D011795:Surveys and Questionnaires