Effect of stretch on improvement of muscular contractures in rats

Autor: Akira Otsuka, Takeya Ono, Wakako Tsumiyama, Tomohiro Matsumoto, Kazuki Aihara, Yasukazu Saito, Namiko Umei, Atsushi Tasaka, Hideki Ishikura, Yuta Sato, Sadaaki Oki
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Journal of Physical Therapy Science
ISSN: 2187-5626
0915-5287
Popis: [Purpose] The purpose of this study was to investigate how a stretching torque affects muscular contractures. [Subjects] The subjects of this study were 48 male Wistar rats. [Methods] Subjects were divided into 4 groups as follows: Group 1 was the control; Group 2 had muscles in continuous fixation; Group 3 had muscles stretched in the direction of dorsiflexion by a spring balancer set at a torque of 0.3N for a period of 30 minutes after continuous fixation; and Group 4 had muscles stretched in the direction of dorsiflexion by a spring balancer set at a torque of 3.0N for a period of 30 minutes after continuous fixation. Joint fixation periods were for 2 and 4-weeks. Ankle joint range of motion and soleus flexibility were analyzed. [Results] For the 2-week joint fixation, soleus flexibility in Group 4 showed an increase compared with that of Group 3. For both fixation periods, range of motion in Group 4 showed an increase compared with that of Group 3. [Conclusion] For both fixation periods, stretching improved joint range of motion. In the 2-week joint fixation, soleus flexibility improved. However, soleus flexibility did not improve in the 4-week joint fixation.
Databáze: OpenAIRE