Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2011) 10, 700 - 706

Research article
The effect of mild symptomatic patellar tendinopathy on the quadriceps contractions and the Fente motion in elite fencers
Taegyu Kim1, Eunkuk Kim2, , Jongchul Park3, Hyunyong Kang1
Author Information
1 Taereung National Training Center of the Korean Olympic Committee, Seoul, Republic of Korea
2 Korea University Guro Hospital, Seoul, Republic of Korea
3 Korea Institute of Sports Science, Seoul, Republic of Korea

Eunkuk Kim
✉ Department of Physical Medicine and Rehabilitation, Korea University Guro Hospital, Gurodong-Gil 97, Guro-Gu, Seoul, Republic of Korea
Email: eunkuk.kim@gmail.com
Publish Date
Received: 28-08-2011
Accepted: 27-09-2011
Published (online): 01-12-2011
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ABSTRACT

To investigate how mild symptomatic patellar tendinopathy (PT) affects quadriceps contractions and the Fente motion, this case-control study examined elite fencers who continue to train and play fully with mild tendon pains. Twenty-four elite fencers (10 women) with mild symptomatic PT and 24 controls (10 women) participated in the study. Concentric/eccentric isokinetic strength of the quadriceps was tested, and peak torque and total work were recorded. Kinematic data from the knee during the Fente motion were collected. The first analysis period (P1) was after heel contact to the maximal flexion of the knee, and the second (P2) was right after P1 to heel-off. Normalized peak torque and work of concentric/eccentric contractions were not significantly different. Affected fencers demonstrated significantly reduced angular velocities at P2 (p = 0.042). The male fencers did not demonstrate any differences. The affected female fencers demonstrated significantly weaker concentric peak torque at 60°·s-1 (p = 0. 009) and 180°·s-1 (p = 0.047) and less concentric work at 60°·s-1 (p = 0.020). They also demonstrated significantly reduced average angular velocities at P2 (p = 0.001). Therefore, mild symptomatic PT seems to have an effect on the isokinetic concentric contraction of the quadriceps and the angular velocity of the knee during the backward Fente motion in elite female fencers who are participating fully in training and competition.

Key words: Patellar tendinopathy, elite fencers, isokinetic, kinematics


           Key Points
  • It is likely that even mild symptomatic patellar tendinopathy could affect the athletic performances in elite fencers.
  • Elite female fencers are more likely to be affected substantially by symptomatic patellar tendinopathy in their sporting ability than male fencers.
  • Because weak concentric knee extensors may affect the performance in fencing, not only eccentric training for symptomatic patellar tendinopathy but also proper concentric training of the quadriceps may be helpful in a rehabilitation program of elite female fencers who are participating fully in their training and competition.
 
 
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