Effects of Prolonged Stretching and Thermotherapy on Muscle Contracture of Immobilized Rat Soleus Muscle

• Kondo Yasutaka

  Department of Rehabilitation, Japanese Red Cross Nagasaki Genbaku Hospital

• Nakano Jiro

  Department of Physical Therapy Science, Unit of Physical and Occupational Therapy Sciences, Nagasaki University Graduate School of Biomedical Sciences

• Sakamoto Junya

  Department of Rehabilitation, Nagasaki University Hospital

• Kataoka Hideki

  Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences

• Yokoyama Shingo

  Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences

• Honda Yuichiro

  Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences

• Origuchi Tomoki

  Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences

• Yoshimura Toshiro

  Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences

• Okita Minoru

  Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences

抄録

[Purpose] We examined the effects of prolonged stretching and thermotherapy on muscle contracture of immobilized rat soleus muscles by determining ankle joint range of motion (ROM), collagen fibril arrangement in the endomysium and insoluble collagen content. [Methods] In the experimental group, bilateral ankle joints of each rat were fixed in full plantar flexion with plaster casts for four weeks. Then, the experimental group animals were randomly partitioned into five groups: 1) immobilization alone; and 2) spontaneous recovery, 3) prolonged stretching, 4) thermotherapy, and 5) prolonged stretching immediately following thermotherapy for 2 weeks after cast removal. Prolonged stretching of the soleus muscle (30 min/day) was conducted by maintaining the dorsiflexion position of the ankle joint. Thermotherapy consisted of immersion of bilateral hindlimbs (20 min/day) in hot water (42 °C). Under anesthesia, both treatments were performed six days per week during the two-week remobilization. [Results] Immobilization led to decreased ROM, collagen fibril movement in the endomysium and increased insoluble collagen. Prolonged stretching and the combination of stretching and thermotherapy accelerated amelioration of the ROM limitation and diminished collagen fibril movement. [Conclusion] Our findings suggest that while thermotherapy does not exert a specific effect on muscle contracture, prolonged stretching can promote recovery.

収録刊行物

• Ｊ　Ｐｈｙｓ　Ｔｈｅｒ　Ｓｃｉ

  Ｊ　Ｐｈｙｓ　Ｔｈｅｒ　Ｓｃｉ 24 (6), 541-547, 2012

  理学療法科学学会

キーワード

• Stretching
• Thermotherapy
• Muscle contracture

詳細情報

• CRID: 1390282679303418624
• NII論文ID: 10031076687
• NII書誌ID: AA10798949
• DOI: 10.1589/jpts.24.541
• ISSN: 21875626
• ISSN: 09155287
• HANDLE: 10069/30230
• Web Site: https://nagasaki-u.repo.nii.ac.jp/records/9589
• Web Site: https://www.jstage.jst.go.jp/article/jpts/24/6/24_541/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2013276051
• 本文言語コード: en
• データソース種別:
  • JaLC
  • IRDB
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可