Int J Sports Med 2010; 31(6): 410-415
DOI: 10.1055/s-0030-1248285
Training & Testing

© Georg Thieme Verlag KG Stuttgart · New York

Knee Proprioception after Exercise-Induced Muscle Damage

R. Torres1 , 2 , J. Vasques2 , J. A. Duarte3 , J. M. H. Cabri4
  • 1Technical University of Lisbon, Faculty of Human Kinetics, CIPER, Lisbon, Portugal
  • 2North Polytechnic Institute of Health, Department of Physiotherapy, Paredes, Portugal
  • 3University of Porto, Sport Biology, Porto, Portugal
  • 4Norwegian School of Sport Sciences, Department of Physical Performance, Oslo, Norway
Weitere Informationen

Publikationsverlauf

accepted after revision January 11, 2010

Publikationsdatum:
18. März 2010 (online)

Preview

Abstract

The purpose of the present study was to investigate whether exercise-induced quadriceps muscle damage affects knee proprioception such as joint position sense (JPS), force sense and the threshold to detect passive movement (TTDPM). Fourteen young men performed sets of eccentric quadriceps contractions at a target of 60% of the maximal concentric peak torque until exhaustion; the exercise was interrupted whenever the subject could not complete two sets. Muscle soreness, JPS, the TTDPM and force sense were examined before the exercise as well as one, 24, 48, 72 and 96 h after exercise. The results were compared using one-way repeated-measure ANOVA. Plasma CK activity, collected at the same times, was analyzed by the Friedman's test to discriminate differences between baseline values and each of the other assessment moments (p<0.05). Relative to the proprioception assessment, JPS at 30 and 70° of knee flexion and force sense were significantly decreased up to 48 h, whereas TTDPM decreased significantly at only one hour and 24 h after exercise, at 30 and 70° of the knee flexion, respectively. The results allow the conclusion that eccentric exercise leading to muscle damage alters joint proprioception, suggesting that there might be impairment in the intrafusal fibres of spindle muscles and in the tendon organs.

References

Correspondence

Dr. Rui Torres

North Polytechnic Institute of Health

Department of Physiotherapy

R. Central de Gandra

1317-4585-116 GANDRA PRD

Paredes

Portugal

Telefon: +351/224 157 171

Fax: +351/224 157 102

eMail: rui.torres@ipsn.cespu.pt