The effect of exercises on the functional and biomechanical performance of healing tendon in a rat model

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The effect of exercises on the functional and biomechanical performance of healing tendon in a rat model

 

Author: See, Kee-ngan Edwina
Title: The effect of exercises on the functional and biomechanical performance of healing tendon in a rat model
Degree: M.Sc.
Year: 2003
Subject: Hong Kong Polytechnic University -- Dissertations
Exercise therapy
Tendons -- Wounds and injuries -- Physical therapy
Department: Multi-disciplinary Studies
Dept. of Rehabilitation Sciences
Pages: ix, 74 leaves : ill. (some col.) ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1714733
URI: http://theses.lib.polyu.edu.hk/handle/200/4982
Abstract: Purpose: This study examined the effects of running and swimming exercises on the functional performance and mechanical strength of Achilles tendon repair. Methods: 30 Sprague-Dawley rats received surgical transection to their right medial Achilles tendon. The rats were divided into running (n=11), swimming (n=10) and control (n=9) groups, the running and swimming groups were given daily exercise training starting from the sixth day after injury and the control group did not receive any exercise throughout the studied period. Achilles functional index (AFI) was recorded pre-operatively and on post-operative days 3, 10, and 30. On day 30, the rats were sacrificed and the Achilles tendons were harvested for biomechanical testing for load-relaxation properties, stiffness and ultimate tensile strength (UTS). The data of AFI was analyzed with 2-way ANOVA, whereas the load-relaxation, stiffness, and UTS were analyzed with MANOVA with a at 0.05. Results: The data showed that UTS of the running group was significantly higher than the control group (p=0.015), and there was no significant difference between the swimming and control group (p=0.228). Results of stiffness and load-relaxation were not significant (p=0.823 and 0.633 respectively). The AFI results were not significantly different among the 3 groups (p=0.242). Conclusion: This study showed that running exercise could improve the strength of partially ruptured Achilles tendons at 30 days after injury.

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