| HOME | HELP | CONTACT US | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
Sign In to gain access to subscriptions and/or personal tools.
|
|
|
|||||||
Sign In to gain access to subscriptions and/or personal tools. |
|||||||||
From the * University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, Veteran Administration, Durham, North Carolina, and Sports Medicine Center, Duke University, Durham, North Carolina
Address correspondence to Bing Yu, PhD, Center for Human Movement Science, Division of Physical Therapy, CB 7135 Medical School Wing E, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7136 (e-mail: byu{at}med.unc.edu).
Background: Altered motor control strategies in landing and jumping maneuvers are a potential mechanism of noncontact anterior cruciate ligament injury. There are biomechanical differences between male and female athletes in the landing phase of stop-jump tasks. Fatigue is a risk factor in musculoskeletal injuries.
Hypothesis: Lower extremity muscle fatigue alters the knee kinetics and kinematics during the landing phase of 3 stop-jump tasks and increases an athlete’s risk of anterior cruciate ligament injury.
Study Design: Controlled laboratory study.
Methods: Three-dimensional videography and force plate data were collected for 20 recreational athletes (10 male and 10 female athletes) performing 3 stop-jump tasks before and after completing a fatigue exercise. Knee joint angles and resultant forces and moments were calculated.
Results: Both male and female subjects had significantly increased peak proximal tibial anterior shear forces (P = .01), increased valgus moments (P = .03), and decreased knee flexion angles (P = .03) during landings of all 3 stop-jump tasks when fatigued. Fatigue did not significantly affect the peak knee extension moment for male or female athletes.
Conclusion: Fatigued recreational athletes demonstrate altered motor control strategies, which may increase anterior tibial shear force, strain on the anterior cruciate ligament, and risk of injury for both female and male subjects.
Clinic Relevance: Fatigued athletes may have an increased risk of noncontact anterior cruciate ligament injury.
Key Words: anterior cruciate ligament (ACL) • sports • fatigue • injury • biomechanics
This article has been cited by other articles:
|
|
 |
|
  A W Nichols Sports medicine clinical trial research publications in academic medical journals between 1996 and 2005: an audit of the PubMed MEDLINE database Br. J. Sports Med., November 1, 2008; 42(11): 909 - 912. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G Panics, A Tallay, A Pavlik, and I Berkes Effect of proprioception training on knee joint position sense in female team handball players Br. J. Sports Med., June 1, 2008; 42(6): 472 - 476. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. C. Herman, P. S. Weinhold, K. M. Guskiewicz, W. E. Garrett, B. Yu, and D. A. Padua The Effects of Strength Training on the Lower Extremity Biomechanics of Female Recreational Athletes During a Stop-Jump Task Am. J. Sports Med., April 1, 2008; 36(4): 733 - 740. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. W. Kernozek, M. R. Torry, and M. Iwasaki Gender Differences in Lower Extremity Landing Mechanics Caused by Neuromuscular Fatigue Am. J. Sports Med., March 1, 2008; 36(3): 554 - 565. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Kaila Influence of Modern Studded and Bladed Soccer Boots and Sidestep Cutting on Knee Loading During Match Play Conditions Am. J. Sports Med., September 1, 2007; 35(9): 1528 - 1536. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. Yu and W. E Garrett Mechanisms of non-contact ACL injuries Br. J. Sports Med., August 1, 2007; 41(suppl_1): i47 - i51. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. M. W. Chaudhari, T. N. Lindenfeld, T. P. Andriacchi, T. E. Hewett, J. Riccobene, G. D. Myer, and F. R. Noyes Knee and Hip Loading Patterns at Different Phases in the Menstrual Cycle: Implications for the Gender Difference in Anterior Cruciate Ligament Injury Rates Am. J. Sports Med., May 1, 2007; 35(5): 793 - 800. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Krosshaug, A. Nakamae, B. P. Boden, L. Engebretsen, G. Smith, J. R. Slauterbeck, T. E. Hewett, and R. Bahr Mechanisms of Anterior Cruciate Ligament Injury in Basketball: Video Analysis of 39 Cases Am. J. Sports Med., March 1, 2007; 35(3): 359 - 367. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A Koller, G Sumann, W Schobersberger, H Hoertnagl, C Haid, and N Maffulli Decrease in eccentric hamstring strength in runners in the Tirol Speed Marathon * COMMENTARY Br. J. Sports Med., October 1, 2006; 40(10): 850 - 852. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. Y. Griffin, M. J. Albohm, E. A. Arendt, R. Bahr, B. D. Beynnon, M. DeMaio, R. W. Dick, L. Engebretsen, W. E. Garrett Jr, J. A. Hannafin, et al. Understanding and Preventing Noncontact Anterior Cruciate Ligament Injuries: A Review of the Hunt Valley II Meeting, January 2005 Am. J. Sports Med., September 1, 2006; 34(9): 1512 - 1532. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. J. van den Bogert, S. G. McLean, B. Yu, J. J. Chappell, and W. E. Garrett Jr Letters to the Editor * Authors' Response Am. J. Sports Med., February 1, 2006; 34(2): 312 - 315. [Full Text] [PDF]
|
|
| HOME | HELP | CONTACT US | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
