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GAZZETTA MEDICA ITALIANA ARCHIVIO PER LE SCIENZE MEDICHE
A Journal on Internal Medicine and Pharmacology
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Scopus, Emerging Sources Citation Index
Gazzetta Medica Italiana Archivio per le Scienze Mediche 2011 February;170(1):53-8
Effects of heating on blood volume and oxygen saturation of human Achilles tendon in vivo
Kubo K. 1, Ikebukuro T. 2
1 Department of Life Science, University of Tokyo, Meguro, Tokyo, Japan
2 Department of Physical Education, Kokushikan University, Tokyo, Japan
Aim. The purpose of this study was to investigate the effects of application of hot pack (heating) on blood volume and of human Achilles tendon in vivo.
Methods. Ten healthy male participated in this study. During heating (30 min) and recovery period (30 min), the blood volume and oxygen saturation of medial gastrocnemius muscle and Achilles tendon were measured using near infrared spectroscopy and red laser lights.
Results. Compared to the resting levels, the blood volume of muscle and tendon increased by +37.6±18.9 % for muscle and +34.0±20.3 % for tendon at the end of heating (both P<0.001). However, the blood volume of tendon values did not return to the resting levels during the recovery period, although that of muscle returned to the resting level after the middle stage of recovery period. Moreover, the oxygen saturation of tendon increased during heating, while that of muscle did not change. During the recovery period, the oxygen saturation of both muscle and tendon were higher than those of the resting levels.
Conclusion. The blood volume and oxygen saturation of tendon increased significantly, and thus remained these levels during the recovery period. These results would relate to the repair of tendon injuries due to hyperthermia.