B13 電気的筋収縮制御を利用した骨の力学刺激法に関する研究(筋骨格系のバイオメカニクス1)  [in Japanese] B13 Mechanical Stimulation of Bone by Electrically-Controlled Muscle Contraction  [in Japanese]

A purpose of this study is to measure bone strain induced electrically-controlled muscle contraction and compare with that recorded during walking exercise using an animal model. A strain gage technique was used to measure strain on a rat femur when a rectus femoris muscle is stimulated electrically in a sinusoidal waveform at a peak voltage of 0, 1, 3, or 6V, and during walking exercise(4m/min) by a treadmill. Bone strain recorded in 6V-muscle stimulation was 65% larger than that in treadmill exercise. This result suggests that electrically-controlled muscle contraction could be useful as a new mechanical stimulation method to elicit osteogenesis response.